funder_partner: CGIAR Research Program on Wheat (WHEAT)

Joining advanced science with field-level research and extension in lower- and middle-income countries, the CGIAR Research Program on Wheat (WHEAT) works with public and private organizations worldwide to raise the productivity, production and affordable availability of wheat for 2.5 billion resource-poor producers and consumers who depend on the crop as a staple food.

WHEAT is led by the International Maize and Wheat Improvement Center (CIMMYT), with the International Center for Agricultural Research in the Dry Areas (ICARDA) as a primary research partner.

Funding for WHEAT comes from CGIAR and national governments, foundations, development banks and other public and private agencies, in particular the Australian Centre for International Agricultural Research (ACIAR), the UK Department for International Development (DFID) and the United States Agency for International Development (USAID).

https://wheat.org/

Launching the AgriFoodTrust platform

Written by Matthew O'Leary on May 12, 2020. Posted in News. 1 Comment on Launching the AgriFoodTrust platform

A new testing and learning platform for digital trust and transparency technologies — such as blockchain — in agri-food systems was launched at the Strike Two Summit in late February.

AgriFoodTrust debuted at the summit which brought together key agri-food system players to discuss how blockchain and related technologies can contribute to food safety, quality and sustainability, said Gideon Kruseman, an economist with the International Maize and Wheat Improvement Center (CIMMYT), who co-founded the platform.

“Blockchain is often associated with the digital security that led to cryptocurrencies. However, growing research is providing evidence on its unique potential to bring greater efficiency, transparency and traceability to the exchange of value and information in the agriculture sector,” said Kruseman.

“Many of the wicked problems and seemingly insuperable challenges facing dynamic, complex agri-food system value chains, especially in low and middle-income countries, boil down to a lack of trust, transparency and reliable governance structures,” said the researcher who also leads the Socio-Economic Data Community of Practice of the CGIAR Platform for Big Data in Agriculture.

Future Food panelist speak at the Strike Two Summit in Amsterdam, the Netherlands. (Photo: The New Fork)

A blockchain is a ledger that is almost impossible to forge. It can be described as a data structure that holds transactional records and ensures security, transparency and decentralization. Technology may be at the foundation of the solutions, but technology is the easy part; solving the softer side has proven to be a seemingly insuperable challenge over the past decades, Kruseman explained.

Digital trust and transparency technologies can be used to improve governance structures and limit corruption in agri-food systems in low and middle income countries, said Marieke de Ruyter de Wildt, co-founder of AgriFoodTrust.

“This new generation of decentralized technologies is, in essence, improving governance structures. People often think it is about technology, but it’s not. It is about people and how we organize things.”

“These technologies are neutral, immutable and censorship resistant. You can mimic this if you think about rules without a ruler. Just imagine what opportunities arise when a system is incorruptible,” said de Ruyter de Wildt.

It is hoped, accessible via QR codes, for example, that the technology can be used to tackle challenges, such as preventing the sale of counterfeit seeds to smallholder farmers, ensuring the nutritional value of biofortified crop varieties and promoting the uptake of sustainable agricultural principles whilst improving the implementation and monitoring of international agreements related to agriculture.

“This is where the platform comes in as a knowledge base. The AgriFoodTrust platform sees researchers from CGIAR Centers and academia, such as Wageningen University, experiment with these technologies on top of other solutions, business models and partnerships to determine what works, how, when and for whom, in order to share that information,” Kruseman added.

Findings on the new platform will be used to build capacity on all aspects of the technologies and their application to ensure this technology is inclusive and usable.

Along with Kruseman, AgriFoodTrust co-founders include digital agriculture experts de Ruyter de Wildt, the Founder and CEO of The New Fork, and Chris Addison, Senior Coordinator of Data for Agriculture at CTA. Seed funding for the platform has been raised through CTA, the CGIAR Platform for Big Data in Agriculture and the CGIAR Programs on MAIZE and WHEAT.

“AgriFoodTrust sets out to accelerate understanding about these technologies and fundamentally make food systems more integer and resilient,” explained de Ruyter de Wildt.

By 2050, farmers will need to grow enough diverse and nutritious food to feed 10 billion people on less land using less resources while faced with the challenges of a changing climate. This has led researchers to push for agricultural technologies that engender more inclusive, sustainable food systems. It is hoped that increased trust and transparency technologies can help overcome counterproductive incentives, poor governance structures, prevailing institutional arrangements and market failures.

For more information, subscribe to the Socio-Economic Data Community of Practice newsletter.

Breaking Ground: Maria Itria Ibba and the lab that bakes bread

Written by Mike Listman on May 6, 2020. Posted in Features.

The rising and shifting demand for wheat, with rapid urbanization and increasingly globalized food markets, is pushing farmers more than ever to produce high-quality grain, according to the scientist who leads wheat quality research in the world’s foremost publicly-funded wheat breeding program.

“Wheat quality is becoming more and more important, as the industrial production of bread and other wheat-based foods increases to meet the demands of city dwellers, working women, and wheat consumers in wheat-importing countries,” said Maria Itria Ibba, head of the Wheat Chemistry and Quality Laboratory at the International Maize and Wheat Improvement Center (CIMMYT).

“Companies that produce and market food for such consumers demand high, consistent quality in grain they purchase and we have to help wheat farmers to meet stringent requirements.”

This is so important that CIMMYT’s Global Wheat Program — whose contributions figure in more than half of the wheat varieties released worldwide — directly uses lab data on milling, processing and end-use quality to decide which bread and durum wheat lines to move forward in its breeding programs, according to Ibba.

“Assessing quality is a huge task, because wheat is used to make hundreds of different foods, including all kinds of leavened bread, flat breads, pastas, noodles and steamed bread,” said Ibba. “Our lab is an integral part of breeding, analyzing thousands of grain samples from thousands of wheat lines each year for nearly a dozen quality parameters.”

Cut out for quality

A native of Viterbo, Italy, Ibba has led the Wheat Chemistry and Quality Laboratory since 2019 and is uniquely qualified for the job, with a bachelor’s degree in biotechnology, a master’s degree in biotechnology for the safety and quality of agricultural products — both from the University of Tuscia, Viterbo — and a doctorate in crop science from the Washington State University. Her Ph.D. dissertation addressed “low-molecular-weight glutenin subunit gene family members and their relationship with wheat end-use quality parameters.”

With a mother who studied medicine and a father who worked at the Italian Space Agency, Ibba said that in school she always enjoyed science subjects such as biology and chemistry. “They were easy for me to understand and I really liked how, after studying them, I was able to explain and understand many things around me.”

Ibba said the biggest challenges for her and her lab team are to understand wheat quality needs and conduct faster and better analyses.

“Several of the tests we do are expensive, time-consuming, and require skilled personnel and significant amounts of grain,” she explained, citing the use of exotically named devices such as the “Quadrumat Senior mill,” the “mixograph,” and the “alveograph,” to list a few. “We’re continuously looking for novel methods that are quicker, use smaller samples of grain, and with lower costs.”

Understanding the biochemical and genetic bases of wheat grain and flour quality traits is key to this, according to Ibba, but wheat quality traits are so complex genetically that DNA markers are of little help in breeding. “We’ve begun to explore whole genome selection for wheat quality traits, in collaboration with Kansas State University, but this will never completely replace the laboratory tests.”

Let’s talk health and nutrition

A staple of tours for the hundreds of visitors that come each year to CIMMYT in Mexico, the wheat quality laboratory combines the razzle-dazzle of high-tech devices with hands-on, sensory attractions such as inflating dough balls and freshly baked test loaves.

Ibba’s work includes talking to visitors about wheat, its important history and role in human nutrition and food, and concerns in the popular media regarding wheat and health.

“I think people know more now about what gluten is and its importance, but there is still the need to talk about gluten and wheat so that people can make informed decisions based on scientific facts,” she said. “I was happy to see the recent article from CIMMYT on a review study which, among many other things, showed there was no scientific evidence for the idea that eating refined flour is bad for your health.”

“Wheat provides about 20 percent of calories and protein for more than 4.5 billion people in developing countries,” Ibba pointed out. “There’s an increasing focus on understanding and improving the nutritional quality of wheat and its products because of the greater overall interest in diets and in the nutritional value of diverse foods.”

A wheat field in Pakistan, ready for harvest. (Photo: Kashif Syed/CIMMYT)

CIMMYT and Pakistan: 60 years of collaboration

Written by Mike Listman on April 24, 2020. Posted in Publications. 1 Comment on CIMMYT and Pakistan: 60 years of collaboration

A new fact sheet captures the impact of CIMMYT after six decades of maize and wheat research in Pakistan.

Dating back to the 1960s, the research partnership between Pakistan and CIMMYT has played a vital role in improving food security for Pakistanis and for the global spread of improved crop varieties and farming practices.

Norman Borlaug, Nobel Peace Prize laureate and first director of CIMMYT wheat research, kept a close relationship with the nation’s researchers and policymakers. CIMMYT’s first training course participant from Pakistan, Manzoor A. Bajwa, introduced the high-yielding wheat variety “Mexi-Pak” from CIMMYT to help address the national food security crisis. Pakistan imported 50 tons of Mexi-Pak seed in 1966, the largest seed purchase of its time, and two years later became the first Asian country to achieve self-sufficiency in wheat, with a national production of 6.7 million tons.

CIMMYT researchers in Pakistan examine maize cobs. (Photo: CIMMYT)

In 2019 Pakistan harvested 26 million tons of wheat, which roughly matches its annual consumption of the crop.

In line with Pakistan’s National Food Security Policy and with national partners, CIMMYT contributes to Pakistan’s efforts to intensify maize- and wheat-based cropping in ways that improve food security, raise farmers’ income, and reduce environmental impacts. This has helped Pakistani farmers to figure among South Asia’s leaders in adopting improved maize and wheat varieties, zero tillage for sowing wheat, precision land leveling, and other innovations.

With funding from USAID, since 2013 CIMMYT has coordinated the work of a broad network of partners, both public and private, to boost the productivity and climate resilience of agri-food systems for wheat, maize, and rice, as well as livestock, vegetable, and fruit production.

Download the fact sheet:
CIMMYT and Pakistan: 60 years of collaboration

Cover photo: A wheat field in Pakistan, ready for harvest. (Photo: Kashif Syed/CIMMYT)

Blast and rust forecast

Written by Matthew O'Leary on April 20, 2020. Posted in Features. 1 Comment on Blast and rust forecast

An early warning system set to deliver wheat disease predictions directly to farmers’ phones is being piloted in Bangladesh and Nepal by interdisciplinary researchers.

Experts in crop disease, meteorology and computer science are crunching data from multiple countries to formulate models that anticipate the spread of the wheat rust and blast diseases in order to warn farmers of likely outbreaks, providing time for pre-emptive measures, said Dave Hodson, a principal scientist with the International Maize and Wheat Improvement Center (CIMMYT) coordinating the pilot project.

Around 50,000 smallholder farmers are expected to receive improved disease warnings and appropriate management advisories through the one-year proof-of-concept project, as part of the UK Aid-funded Asia Regional Resilience to a Changing Climate (ARRCC) program.

Early action is critical to prevent crop diseases becoming endemic. The speed at which wind-dispersed fungal wheat diseases are spreading through Asia poses a constant threat to sustainable wheat production of the 130 million tons produced in the region each year.

“Wheat rust and blast are caused by fungal pathogens, and like many fungi, they spread from plant to plant — and field to field — in tiny particles called spores,” said Hodson. “Disease strain mutations can overcome resistant varieties, leaving farmers few choices but to rely on expensive and environmentally-damaging fungicides to prevent crop loss.”

“The early warning system combines climate data and epidemiology models to predict how spores will spread through the air and identifies environmental conditions where healthy crops are at risk of infection. This allows for more targeted and optimal use of fungicides.”

The system was first developed in Ethiopia. It uses weather information from the Met Office, the UK’s national meteorological service, along with field and mobile phone surveillance data and disease spread modeling from the University of Cambridge, to construct and deploy a near real-time early warning system.

CIMMYT consultant Madan Bhatta conducts field surveys using Open Data Kit (ODK) in the mid-hills of Nepal. (Photo: D. Hodson/CIMMYT)

Initial efforts focused on adapting the wheat stripe and stem rust model from Ethiopia to Bangladesh and Nepal have been successful, with field surveillance data appearing to align with the weather-driven disease early warnings, but further analysis is ongoing, said Hodson.

“In the current wheat season we are in the process of comparing our disease forecasting models with on-the-ground survey results in both countries,” the wheat expert said.

“Next season, after getting validation from national partners, we will pilot getting our predictions to farmers through text-based messaging systems.”

CIMMYT’s strong partnerships with governmental extension systems and farmer associations across South Asia are being utilized to develop efficient pathways to get disease predictions to farmers, said Tim Krupnik, a CIMMYT Senior Scientist based in Bangladesh.

“Partnerships are essential. Working with our colleagues, we can validate and test the deployment of model-derived advisories in real-world extension settings,” Krupnik said. “The forecasting and early warning systems are designed to reduce unnecessary fungicide use, advising it only in the case where outbreaks are expected.”

Local partners are also key for data collection to support and develop future epidemiological modelling, the development of advisory graphics and the dissemination of information, he explained.

The second stage of the project concerns the adaptation of the framework and protocols for wheat blast disease to improve existing wheat blast early warning systems already pioneered in Bangladesh.

Example of weekly stripe rust spore deposition forecast in Nepal. Darker colors represent higher predicted number of spores deposited. The early warning system combines weather information from the Met Office with field and mobile phone surveillance data and disease spread modeling from the University of Cambridge. (Graphic: University of Cambridge and Met Office)

Strong scientific partnership champions diversity to achieve common goals

The meteorological-driven wheat disease warning system is an example of effective international scientific partnership contributing to the UN Sustainable Development Goals, said Sarah Millington, a scientific manager at Atmospheric Dispersion and Air Quality Group with the Met Office.

“Diverse expertise from the Met Office, the University of Cambridge and CIMMYT shows how combined fundamental research in epidemiology and meteorology modelling with field-based disease observation can produce a system that boosts smallholder farmers’ resilience to major agricultural challenges,” she said.

The atmospheric dispersion modeling was originally developed in response to the Chernobyl disaster and since then has evolved to be able to model the dispersion and deposition of a range of particles and gases, including biological particles such as wheat rust spores.

“The framework together with the underpinning technologies are transferable to forecast fungal disease in other regions and can be readily adapted for other wind-dispersed pests and disease of major agricultural crops,” said Christopher Gilligan, head of the Epidemiology and Modelling Group at the University of Cambridge.

Fungal wheat diseases are an increasing threat to farmer livelihoods in Asia

Wheat leaf rust can be spotted on a wheat plant of a highly susceptible variety in Nepal. The symptoms of wheat rust are dusty, reddish-orange to reddish-brown fruiting bodies that appear on the leaf surface. These lesions produce numerous spores, which are spread by wind and splashing water. (Photo: D Hodson/CIMMYT)

While there has been a history of wheat rust disease epidemics in South Asia, new emerging strains and changes to climate pose an increased threat to farmers’ livelihoods. The pathogens that cause rust diseases are continually evolving and changing over time, making them difficult to control.

Stripe rust threatens farmers in Afghanistan, India, Nepal and Pakistan, typically in two out of five seasons, with an estimated 43 million hectares of wheat vulnerable. When weather conditions are conducive and susceptible cultivars are grown, farmers can experience losses exceeding 70%.

Populations of stem rust are building at alarming rates and previously unseen scales in neighboring regions. Stem rust spores can spread across regions on the wind; this also amplifies the threat of incursion into South Asia and the ARRCC program’s target countries, underscoring the very real risk that the disease could reemerge within the subcontinent.

The devastating wheat blast disease, originating in the Americas, suddenly appeared in Bangladesh in 2016, causing wheat crop losses as high as 30% on a large area, and continues to threaten South Asia’s vast wheat lands.

In both cases, quick international responses through CIMMYT, the CGIAR research program on Wheat (WHEAT) and the Borlaug Global Rust Initiative have been able to monitor and characterize the diseases and, especially, to develop and deploy resistant wheat varieties.

The UK aid-funded ARRCC program is led by the Met Office and the World Bank and aims to strengthen weather forecasting systems across Asia. The program is delivering new technologies and innovative approaches to help vulnerable communities use weather warnings and forecasts to better prepare for climate-related shocks.

The early warning system uses data gathered from the online Rust Tracker tool, with additional fieldwork support from the Cereal Systems Initiative for South Asia (CSISA), funded by USAID and the Bill & Melinda Gates Foundation, both coordinated by CIMMYT.

Hans Braun, Director of the Global Wheat Program at the International Maize and Wheat Improvement Center (CIMMYT), inspects wheat plants in the greenhouses. (Photo: Alfonso Cortés/CIMMYT)

Crossing boundaries

Written by Marta Millere on April 7, 2020. Posted in Features.

Disclaimer: The views and opinions expressed in this article are those of the authors and do not necessarily reflect the official views or position of the International Maize and Wheat Improvement Center (CIMMYT).

Daily life as we know it has grinded to a halt and crop scientists are pondering next steps in face of the global COVID-19 crisis. Hans Braun, Director of the Global Wheat Program at the International Maize and Wheat Improvement Center (CIMMYT) and the CGIAR Research Program on Wheat, joins us for a virtual chat to discuss the need for increased investment in crop disease research as the world risks a food security crisis.

What have you learned from your work on contagious wheat diseases that we can take away during this time?

Wheat epidemics go back to biblical times. Wheat scientists now believe Egypt’s “seven bad years” of harvest referenced in the Bible were due to a stem rust outbreak.

So, we know what happens when we have a crop epidemic: diseases can completely wipe out a harvest. I have seen subsistence farmers stand in front of their swaying, golden wheat fields, but there is not a single grain inside the spikes. All because of wheat blast.

There are a lot of parallel issues that I see with COVID-19.

The epidemiology models for humans which we see now have a lot in common with plant epidemiology. For example, if you take a wheat field sown with a variety which is rust-resistant and then you get a spore which mutates and overcomes the resistance — like COVID-19 overcomes the human immune system — it then takes about two weeks for it to sporulate again and produce millions of these mutated spores. They sporulate once more and then you have billions and trillions of spores — then the wheat fields at the local, national and, in the worst case, regional level are severely damaged and in worst case are going to die.

The problem is that since we cannot quarantine wheat, if the weather is favorable these spores will fly everywhere and — just like with COVID-19 — they don’t need a passport to travel.

Could you elaborate on that? How can wheat diseases go global?

Usually it takes around 5 years, sometimes less, until a mutation in a rust spore can overcome the resistance of a wheat variety. Every so often, we see rust epidemics which cover an entire region. To monitor this movement, the Borlaug Global Rust Initiative of Cornell University and CIMMYT, funded by the Bill & Melinda Gates Foundation and DFID, established a global rust monitoring system that provides live data on spore movements.

For example, if you have a new race of stem rust in Yemen — and in Yemen wheat matures early — and then farmers burn the straw, their action “pushes” the spores up into the air, thus allowing them to enter the jet stream and cover 2,000 to 5,000 kilometers in a short period of time. Spores can also be carried on clothes or shoes by people who walked into an infected wheat field. Take Australia, for example, which has very strict quarantine laws. It is surrounded by sea and still eventually they get the new rust races which fly around or come with travelers. One just cannot prevent it.

Stem rust resistant (left) and susceptible (right) wheat plants at the stem rust phenotyping facility in Njoro, Nakuru County in Kenya. (Photo: Joshua Masinde/CIMMYT)

Could climate change exacerbate the spreading of crop diseases?

Yes, the climate and its variability have a lot to do with it. For example, in the case of yellow rust, what’s extremely important is the time it takes from sporulation to sporulation. Take a rust spore. It germinates, then it grows, it multiplies and then once it is ready it will disperse and infect wheat plants. From one dispersal to the next it takes about two weeks.

In the last decades, in particular for yellow rust, new races are better adapted to high temperature and are multiplying faster. In a Nature paper, we showed that 30 years ago yellow rust was not present in the Great Plains in the US. Today, it is the most important wheat disease there. So there really is something going on and changing and that’s why we are so concerned about new wheat disease races when they come up.

What could an epidemiologist specialized in human viruses take from this?

Well, I think human epidemiologists know very well what happens in a case like COVID-19. Ordinary citizens now also start to understand what a pandemic is and what its related exponential growth means.

Maybe you should ask what policymakers can learn from COVID-19 in order to prevent plant epidemics. When it comes to epidemics, what applies to humans applies to plants. If there is a new race of a given crop disease, in that moment, the plant does not have a defense mechanism, like humans in the case of COVID-19, because we haven’t developed any immunity. While in developed countries farmers can use chemicals to control plant diseases, resource-poor farmers do not have this option, due to lack to access or if the plant protective has not been registered in their country.

In addition to this, our lines of work share a sense of urgency. If “doomsday” happens, it will be too late to react. At present, with a human pandemic, people are worried about the supply chain from food processing to the supermarket. But if we have an epidemic in plants, then we do not have the supply chain from the field to the food processing industry. And if people have nothing to eat, they will go to the streets and we will see violence. We simply cannot put this aside.

What other lessons can policymakers and other stakeholders take away from the current crisis?

The world needs to learn that we cannot use economics as the basis for disease research. We need to better foresee what could happen.

Let’s take the example of wheat blast, a devastating disease that can destroy the wheat spike and was initially confined to South America. The disease arrived in Bangladesh in 2016 and caused small economic damage, maybe 30,000 tons loss in a small geographic area — a small fraction of the national production but a disaster for the smallholder farmer, who thus would have lost her entire wheat harvest. The disease is now controlled with chemicals. But what if chemical resistance is developed and the disease spreads to the 10 million hectares in the Indo-Gangetic Plains of India and the south of Pakistan. Unlikely? But what if it happens?

Agriculture accounts for 30% of the global GDP and the research money [going to agriculture] in comparison to other areas is small. Globally only 5% of R&D is invested in research for development related to agriculture. Such a discrepancy! A million U.S. dollars invested in wheat blast research goes a long way and if you don’t do it, you risk a disaster.

If there is any flip side to the COVID-19 disaster, it is that hopefully our governments realize that they have to play a much more serious role in many areas, in particular public health and disease control in humans but also in plants.

A Lloyd’s report concluded that a global food crisis could be caused by governments taking isolating actions to protect their own countries in response to a breadbasket failure elsewhere. I’m concerned that as the COVID-19 crisis continues, governments will stop exports as some did during the 2008 food price crisis, and then, even if there is enough food around, the 2008 scenario might happen again and food prices will go through the roof, with disastrous impact on the lives of the poorest.

This article was originally published by the CGIAR Research Program on Wheat (WHEAT):
Crossing boundaries: looking at wheat diseases in times of the COVID-19 crisis.

Cover photo: Hans Braun, Director of the Global Wheat Program at the International Maize and Wheat Improvement Center (CIMMYT), inspects wheat plants in the greenhouses. (Photo: Alfonso Cortés/CIMMYT)

A researcher collects field data at CIMMYT’s experiment station in Ciudad Obregón, Mexico. (Photo: Alfonso Cortés/CIMMYT)

New publications: Breeders can benefit much more from phenotyping tools

Written by Emma Orchardson on March 24, 2020. Posted in Publications.

In crop research fields, it is now a common sight to see drones or other high-tech sensing tools collecting high-resolution data on a wide range of traits — from simple measurement of canopy temperature to complex 3D reconstruction of photosynthetic canopies.

This technological approach to collecting precise plant trait information, known as phenotyping, is becoming ubiquitous, but according to experts at the International Maize and Wheat Improvement Center (CIMMYT) and other research institutions, breeders can profit much more from these tools, when used judiciously.

In a new article in the journal Plant Science, CIMMYT researchers outline the different ways in which phenotyping can assist breeding — from large-scale screening to detailed physiological characterization of key traits — and why this methodology is crucial for crop improvement.

“While having been the subject of debate in the past, extra investment for phenotyping is becoming more accepted to capitalize on recent developments in crop genomics and prediction models,” explain the authors.

Their review considers different contexts for phenotyping, including breeding, exploration of genetic resources, parent building and translations research to deliver other new breeding resources, and how these different categories of phenotyping apply to each. Some of the same tools and rules of thumb apply equally well to phenotyping for genetic analysis of complex traits and gene discovery.

The authors make the case for breeders to invest in phenotyping, particularly in light of the imperative to breed crops for warmer and harsher climates. However, wide scale adoption of sophisticated phenotyping methods will only occur if new techniques add efficiency and effectiveness.

In this sense, “breeder-friendly” phenotyping should complement existing breeding approaches by cost-effectively increasing throughput during segregant selection and adding new sources of validated complex traits to crossing blocks. With this in mind, stringent criteria need to be applied before new traits or phenotyping protocols are incorporated into mainstream breeding pipelines.

Read the full article in Plant Science:
Breeder friendly phenotyping.

A researcher flies a UAV to collect field data at CIMMYT’s experiment station in Ciudad Obregón, Mexico. (Photo: Alfonso Cortés/CIMMYT)

See more recent publications from CIMMYT researchers:

Genome-wide association study to identify genomic regions influencing spontaneous fertility in maize haploids. 2019. Chaikam, V., Gowda, M., Nair, S.K., Melchinger, A.E., Prasanna, B.M. In: Euphytica v. 215, no. 8, art. 138.
Adapting irrigated and rainfed wheat to climate change in semi-arid environments: management, breeding options and land use change. 2019. Hernandez-Ochoa, I.M., Pequeno, D.N.L., Reynolds, M.P., Md Ali Babar, Sonder, K., Molero, A., Hoogenboom, G., Robertson, R., Gerber, S., Rowland, D.L., Fraisse, C.W., Asseng, S. In: European Journal of Agronomy.
Integrating genomic resources to present full gene and putative promoter capture probe sets for bread wheat. 2019. Gardiner, L.J., Brabbs, T., Akhunova, A., Jordan, K., Budak, H., Richmond, T., Sukhwinder-Singh, Catchpole, L., Akhunov, E., Hall, A.J.W. In: GigaScience v. 8, no. 4, art. giz018.
Rethinking technological change in smallholder agriculture. 2019. Glover, D., Sumberg, J., Ton, G., Andersson, J.A., Badstue, L.B. In: Outlook on Agriculture v. 48, no. 3, p. 169-180.
Food security and agriculture in the Western Highlands of Guatemala. 2019. Lopez-Ridaura, S., Barba‐Escoto, L., Reyna, C., Hellin, J. J., Gerard, B., Wijk, M.T. van. In: Food Security v. 11, no. 4, p. 817-833.
Agronomic, economic, and environmental performance of nitrogen rates and source in Bangladesh’s coastal rice agroecosystems. 2019. Shah-Al Emran, Krupnik, T.J., Kumar, V., Ali, M.Y., Pittelkow, C. M. In: Field Crops Research v. 241, art. 107567.
Highlights of special issue on “Wheat Genetics and Breeding”. 2019. He Zhonghu, Zhendong Zhao, Cheng Shun-He In: Frontiers of Agricultural Science and Engineering v. 6, no. 3, p. 207-209.
Progress in breeding for resistance to Ug99 and other races of the stem rust fungus in CIMMYT wheat germplasm. 2019. Bhavani, S., Hodson, D.P., Huerta-Espino, J., Randhawa, M.S., Singh, R.P. In: Frontiers of Agricultural Science and Engineering v. 6, no. 3, p. 210-224.
China-CIMMYT collaboration enhances wheat improvement in China. 2019. He Zhonghu, Xianchun Xia, Yong Zhang, Zhang Yan, Yonggui Xiao, Xinmin Chen, Li Simin, Yuanfeng Hao, Rasheed, A, Zhiyong Xin, Zhuang Qiaosheng, Ennian Yang, Zheru Fan, Yan Jun, Singh, R.P., Braun, H.J. In: Frontiers of Agricultural Science and Engineering v. 6. No. 3, p. 233-239.
International Winter Wheat Improvement Program: history, activities, impact and future. 2019. Morgounov, A.I., Ozdemir, F., Keser, M., Akin, B., Payne, T.S., Braun, H.J. In: Frontiers of Agricultural Science and Engineering v. 6, no. 3, p. 240-250.
Genetic improvement of wheat grain quality at CIMMYT. 2019. Guzman, C., Ammar, K., Velu, G., Singh, R.P. In: Frontiers of Agricultural Science and Engineering v. 6, no. 3, p. 265-272.
Comments on special issue on “Wheat Genetics and Breeding”. 2019. He Zhonghu, Liu Xu In: Frontiers of Agricultural Science and Engineering, v. 6. No. 3, p. 309.
Spectral reflectance indices as proxies for yield potential and heat stress tolerance in spring wheat: heritability estimates and marker-trait associations. 2019. Caiyun Liu, Pinto Espinosa, F., Cossani, C.M., Sukumaran, S., Reynolds, M.P. In: Frontiers of Agricultural Science and Engineering, v. 6, no. 3, p. 296-308.
Beetle and maize yield response to plant residue application and manual weeding under two tillage systems in northern Zimbabwe. 2019. Mashavakure, N., Mashingaidze, A.B., Musundire, R., Gandiwa, E., Thierfelder, C., Muposhi, V.K. In: Applied Soil Ecology v. 144, p. 139-146.
Optimizing dry-matter partitioning for increased spike growth, grain number and harvest index in spring wheat. 2019. Rivera Amado, A.C., Trujillo, E., Molero, G., Reynolds, M.P., Sylvester Bradley, R., Foulkes, M.J. In: Field Crops Research v. 240, p. 154-167.
Small businesses, potentially large impacts: the role of fertilizer traders as agricultural extension agents in Bangladesh. 2019. Mottaleb, K.A., Rahut, D.B., Erenstein, O. In: Journal of Agribusiness in Developing and Emerging Economies v. 9, no. 2, p. 109-124.
Heterogeneous seed access and information exposure: implications for the adoption of drought-tolerant maize varieties in Uganda. 2019. Simtowe, F.P., Marenya, P. P., Amondo, E., Regasa, M.W., Rahut, D.B., Erenstein, O. In: Agricultural and Food Economics v. 7. No. 1, art. 15.
Hyperspectral reflectance-derived relationship matrices for genomic prediction of grain yield in wheat. 2019. Krause, M., Gonzalez-Perez, L., Crossa, J., Perez-Rodriguez, P., Montesinos-Lopez, O.A., Singh, R.P., Dreisigacker, S., Poland, J.A., Rutkoski, J., Sorrells, M.E., Gore, M.A., Mondal, S. In: G3: Genes, Genomes, Genetics v.9, no. 4, p. 1231-1247.
Unravelling the complex genetics of karnal bunt (Tilletia indica) resistance in common wheat (Triticum aestivum) by genetic linkage and genome-wide association analyses. 2019. Emebiri, L.C., Sukhwinder-Singh, Tan, M.K., Singh, P.K., Fuentes Dávila, G., Ogbonnaya, F.C. In: G3: Genes, Genomes, Genetics v. 9, no. 5, p. 1437-1447.
Healthy foods as proxy for functional foods: consumers’ awareness, perception, and demand for natural functional foods in Pakistan. 2019. Ali, A., Rahut, D.B. In: International Journal of Food Science v. 2019, art. 6390650.
Northern Himalayan region of Pakistan with cold and wet climate favors a high prevalence of wheat powdery mildew. 2019. Khan, M.R., Imtiaz, M., Farhatullah, Ahmad, S., Sajid Ali.In: Sarhad Journal of Agriculture v. 35, no. 1, p. 187-193.
Resistance to insect pests in wheat—rye and Aegilops speltoides Tausch translocation and substitution lines. 2019. Crespo-Herrera, L.A., Singh, R.P., Sabraoui, A., Moustapha El Bouhssini In: Euphytica v. 215, no. 7, art.123.
Productivity and production risk effects of adopting drought-tolerant maize varieties in Zambia. 2019. Amondo, E., Simtowe, F.P., Rahut, D.B., Erenstein, O. In: International Journal of Climate Change Strategies and Management v. 11, no. 4, p. 570-591.
Review: new sensors and data-driven approaches—A path to next generation phenomics. 2019. Roitsch, T., Cabrera-Bosquet, L., Fournier, A., Ghamkhar, K., Jiménez-Berni, J., Pinto Espinosa, F., Ober, E.S. In: Plant Science v. 282 p. 2-10.
Accountability mechanisms in international climate change financing. 2019. Basak, R., van der Werf, E. In: International Environmental Agreements: Politics, Law and Economics v. 19, no. 3, p. 297-313.
Enhancing the rate of genetic gain in public-sector plant breeding programs: lessons from the breeder’s equation. 2019. Cobb, J.N., Juma, R.U., Biswas, P.S., Arbelaez, J.D., Rutkoski, J., Atlin, G.N., Hagen, T., Quinn, M., Eng Hwa Ng. In: Theoretical and Applied Genetics v. 132, no. 3, p. 627-645.

A farmer checks the drip irrigation system at his rice field in India. (Photo: Hamish John Appleby/IWMI)

Systems thinking at work in South Asia’s food production

Written by Emma Orchardson on March 20, 2020. Posted in News. 1 Comment on Systems thinking at work in South Asia’s food production

In 2009, state governments in Northwest India implemented a policy designed to reduce groundwater extraction by prohibiting the usual practice of planting rice in May and moving it to June, nearer the start of monsoon rains.

Although the policy did succeed in alleviating pressure on groundwater, it also had the unexpected effect of worsening already severe air pollution. The reason for this, according to a recent study published in Nature Sustainability, is that the delay in rice planting narrowed the window between rice harvest and sowing of the subsequent crop — mainly wheat — leaving farmers little time to remove rice straw from the field and compelling them to burn it instead.

Even though burning crop residues is prohibited in India, uncertainty about the implementation of government policy and a perceived lack of alternatives have perpetuated the practice in Haryana and Punjab states, near the nation’s capital, New Delhi, where air pollution poses a major health threat.

Land preparation on a rice field with a two-wheel tractor. (Photo: Vedachalam Dakshinamurthy/CIMMYT)

A farmer uses a tractor fitted with a Happy Seeder. (Photo: Vedachalam Dakshinamurthy/CIMMYT)

A farmer checks the drip irrigation system at his rice field in India. (Photo: Hamish John Appleby/IWMI)

Wheat crop in conservation agriculture. (Photo: Vedachalam Dakshinamurthy/CIMMYT)

A farmer ploughs a rice field with a water buffalo. (Photo: Licensed from Digitalpress – Dreamstime.com; Image 11205929)

Decades of research for development have enabled researchers at the International Maize and Wheat Improvement Center (CIMMYT), the Indian Council of Agricultural Research (ICAR) and other partners to identify potential solutions to this problem.

One particularly viable option focuses on the practice of zero tillage, in which wheat seed is sown immediately after rice harvest through the rice straw directly into untilled soil with a single tractor pass.

In a new blog published as part of the Chicago Council on Global Affairs’ Field Notes series, CIMMYT scientists Hans Braun and Bruno Gerard discuss the combination of agronomic and breeding conditions required to make zero tillage work, and propose a fundamental shift away from current incentives to maximize the region´s cereal production.

Read the full article:
Field Notes – Systems thinking at work in South Asia’s food production

One-minute science: Suchismita Mondal on breeding resilient wheat

Written by Rodrigo Ordóñez on March 19, 2020. Posted in Videos.

Reduced water availability for irrigation and increasing temperatures are of great concern. These two factors can considerably affect wheat production and reduce grain yields.

Watch CIMMYT Wheat Breeder Suchismita Mondal explain — in just one minute — how breeders are developing wheat varieties that have stable grain yield under low water availability and high temperatures.

Growing vegetables in Tunisia. (Photo: ICARDA)

Four ways of strengthening gender equality in the agricultural sector in the MENA region

Written by Alison Doody on March 5, 2020. Posted in Features. 1 Comment on Four ways of strengthening gender equality in the agricultural sector in the MENA region

When it comes to labor markets, the Middle East and North Africa (MENA) is one of the most gender unequal regions in the world. The male labor force participation rate in MENA is no different from other regions, at around 75%, but female labor force participation rates have remained stubbornly low, at around 20% .

Agriculture is the largest employer of women in the MENA region and the female share of the agricultural workforce increased from 30% in 1980 to almost 45% in 2010, exceeding 60% in Jordan, Libya, Syria and the occupied Palestinian Territory. However, women in the region still face significant challenges accessing land and benefitting from technologies and decent, equitable working conditions.

In the fall of 2019, a group of experts, including London School of Economics and Political Science (LSE) professor of Gender and Development Naila Kabeer, came together to discuss the persistent limited access to labor market opportunities for women in South Asia and MENA, despite an increase in women’s education and access to fertility planning. The workshop organized by LSE discussed barriers, opportunities and policy challenges.

Vegetable gardening in Tunisia. (Photo: ICARDA)

We share some of the expert panel’s key recommendations for the MENA region, which featured research funded by the CGIAR Research Program on Wheat.

1. Recognize women as workers not helpers

According to the World Bank, agriculture employs 36% of women and 22% of men in Egypt. However, research shows that women who work in agriculture are widely categorized as “helpers” to male workers rather than workers in their own right. What’s more, women are listed as “housewives” on their national ID cards, while men are listed as “agricultural workers.” As a result, these women are unable to even access opportunities to bargain for better wages and working conditions.

Legally and socially recognizing these women as workers is a first step to introducing equal pay legislation for men and women in agriculture. It would also justify their inclusion in agricultural extension services and strengthen social protection measures.

2. Change perceptions of property ownership

The MENA region has the lowest level of women’s landownership in the world, at just 5%. Our research findings indicate completely different perceptions of ownership among women and men.

Research in Egypt shows that women tend to identify land officially owned solely by themselves as belonging to themselves and their husbands. Men, on the other hand, are less likely to consider their wives as co-owners, identifying male relatives instead.

In the New Lands — lands irrigated after the building of the High Aswan Dam in Egypt — there are land distribution quotas to encourage more land ownership among women. This has enabled some women to gain significant economic, social and political power. Despite this, these women still prefer to bequeath their land to their sons rather than their daughters due to social pressure and the expectation that their sons will provide for them in their old age.

To mitigate these low levels of women’s land ownership, policy change on its own is not enough. Changing perceptions of land and property ownership needs to go hand in hand with changes at a policy level.

3. Enforce legislation for equal pay and zero tolerance for sexual harassment

In Morocco, female employment in agriculture has jumped from 29% in 1980 to 48% in 2010. However, women’s wages, working conditions and bargaining power have not risen with it.

Research shows that women are designated lower paid and more time-consuming tasks, and are systemically paid less than men, even for the same tasks. Women agricultural workers also face high levels of sexual harassment and have limited bargaining power.

Moroccan legislation already stipulates equal pay and zero tolerance for sexual harassment. However, enforcement remains extremely weak. Enforcing existing pro-active legislation is an essential step towards equality for women in agriculture.

4. Revitalize agriculture as a valuable and necessary occupation in society

Much of the world sees agriculture as an occupation of last resort. When surveyed, men and women in Morocco both complained about agricultural work being an unstable and unreliable way of making a living. Women were found to be hired more easily but only because they were paid less than men.

To shift how agriculture is viewed and rebrand it as an important and respected occupation, it needs to be reformed as a safer, more equal and respectful space for both women and men.

Building resilience for smallholder farmers in marginal drylands. (Photo: ICARDA)

A key overall take-away message from the expert panel is that supportive policies alone are not enough. Rather, in order to tackle the institutionalization of harmful gender norms and stimulate actual change in practice at all levels, policy interventions need to go hand in hand with strong consciousness-raising, critical reflection and behavior change initiatives.

Read the full report:
Women’s access to market opportunities in South Asia and the Middle East & North Africa: barriers, opportunities and policy challenges

Explore our coverage of International Women’s Day 2020.

Moving out of poverty or staying poor

Written by Rodrigo Ordóñez on March 4, 2020. Posted in Blogs. 1 Comment on Moving out of poverty or staying poor

Farmer Dhansa Bhandari (left) sows maize seed while Bikram Daugi (right) ploughs with his oxen in Ramghat, Surkhet, Nepal. (Photo: P. Lowe/CIMMYT)

Although the conventional wisdom in South Asian rural villages is that men are principally responsible for pulling their families out of poverty, our recent study showed the truth to be more subtle, and more female.

In our new paper we dig into focus groups and individual life stories in a sample of 32 farming villages from five countries of South Asia. Although we asked about both men’s and women’s roles, focus groups of both sexes emphasized men in their responses — whether explaining how families escaped poverty or why they remained poor.

“Women usually cannot bring a big change, but they can assist their men in climbing up,” explains a member of the poor men’s focus group from Ismashal village (a pseudonym) of Pakistan’s Khyber Pakhtunkhwa province.

The focus group testimonies presented rich examples of the strong influence of gender norms: the social rules that dictate differential roles and conducts for men and women in their society. These norms significantly influenced how local people conceived of movements in and out of poverty in their village and in their own lives.

According to the women’s focus group from Rangpur district in Bangladesh, women “cannot work outside the home for fear of losing their reputation and respect.”

However, in these same communities, men’s and women’s productive roles proved far more variable in the mobility processes of their families than conveyed by the focus groups. We encountered many households with men making irregular or very limited contributions to family maintenance. This happens for a number of reasons, including men’s labor migration, disability, family conflict and separations, aging and death.

What’s more, when sharing their life stories in individual interviews, nearly every woman testified to her own persistent efforts to make a living, cover household expenses, deal with debts, and, when conditions allowed, provide a better life for their families. In fact, our life story sample captured 12 women who testified to making substantial contributions to moving their families out of poverty.

Movers and shakers

We were especially struck by how many of these women “movers” were employing innovative agricultural technologies and practices to expand their production and earnings.

“In 2015, using zero tillage machines I started maize farming, for which I had a great yield and large profit,” reports a 30-year-old woman and mother of two from Matipur, Bangladesh who brought her family out of poverty.

Another 30-year-old mover, a farmer and mother of two from the village of Thool in Nepal, attests to diversification and adoption of improved cultivation practices: “I got training on vegetable farming. In the beginning the agriculture office provided some vegetable seeds as well. And I began to grow vegetables along with cereal crops like wheat, paddy, maize, oats. […] I learnt how to make soil rows.”

Among the women who got ahead, a large majority credited an important man in their life with flouting local customs and directly supporting them to innovate in their agricultural livelihoods and bring their families out of poverty.

Across the “mover” stories, women gained access to family resources which enabled them to step up their livelihood activities. For example, three quarters of the women “movers” spoke of husbands or brothers supporting them to pursue important goals in their lives.

Women’s most important relationship helping them to pursue goals in life: women "movers" (on left) versus "chronic poor" (right). — Women’s most important relationship helping them to pursue goals in life: women “movers” (on left) versus “chronic poor” (right).

Sufia, from a village in the Rajshahi district of Bangladesh, describes how she overcame great resistance from her husband to access a farm plot provided by her brother. The plot enabled Sufia to cultivate betel leaves and paddy rice, and with those profits and additional earnings from livestock activities, she purchased more land and diversified into eggplant, chilies and bitter gourd. Sufia’s husband had struggled to maintain the family and shortly after Sufia began to prosper, he suffered a stroke and required years of medical treatments before passing away.

When Sufia reflects on her life, she considers the most important relationship in her life to be with her brother. “Because of him I can now stand on my two feet.”

We also studied women and their families who did not move out of poverty. These “chronic poor” women rarely mentioned accessing innovations or garnering significant benefits from their livelihoods. In these life stories, we find far fewer testimonies about men who financially supported a wife or sister to help her pursue an important goal.

The restrictive normative climate in much of South Asia means that women’s capacity to enable change in their livelihoods is rarely recognized or encouraged by the wider community as a way for a poor family to prosper. Still, the life stories of these “movers” open a window onto the possibilities unlocked when women have opportunities to take on more equitable household roles and are able to access agricultural innovations.

The women movers, and the men who support them, provide insights into pathways of more equitable agricultural change. What we can learn from these experiences holds great potential for programs aiming to relax gender norms, catalyze agricultural innovation, and unlock faster transitions to gender equality and poverty reduction in the region. Nevertheless, challenging social norms can be risky and can result in backlash from family or other community members. To address this, collaborative research models offer promise. These approaches engage researchers and local women and men in action learning to build understanding of and support for inclusive agricultural change. Our research suggests that such interventions, which combine social, institutional and technical dimensions of agricultural innovation, can help diverse types of families to leave poverty behind.

Read the full study:
Gender Norms and Poverty Dynamics in 32 Villages of South Asia

Remote sensing specialist Francisco Pinto operates a UAV at CIMMYT's research station in Ciudad Obregón, in Mexico's Sonora state.

Breeder friendly phenotyping

Written by Marcia MacNeil on March 3, 2020. Posted in Infographics.

In crop research fields, drones and other high-tech sensing tools are now a common sight. They collect high-resolution data on a wide range of traits — from simple measurement of canopy temperature to complex 3D reconstruction of photosynthetic canopies.

This technological approach to collecting precise plant trait information, known as phenotyping, is becoming ubiquitous. According to experts at the International Maize and Wheat Improvement Center (CIMMYT) and other research institutions, breeders can profit much more from these tools, when used judiciously.

Examples of different classes and applications of breeder friendly phenotyping. (Image: M. Reynolds et al.)

In a new article in the journal Plant Science, CIMMYT Wheat Physiologist Matthew Reynolds and colleagues explain the different ways that phenotyping can assist breeding — from simple to use, “handy” approaches for large scale screening, to detailed physiological characterization of key traits to identify new parental sources — and why this methodology is crucial for crop improvement. The authors make the case for breeders to invest in phenotyping, particularly in light of the imperative to breed crops for warmer and harsher climates.

Read the full article:
Breeder friendly phenotyping.

This article was originally published on WHEAT.

Cover photo: Remote sensing specialist Francisco Pinto operates a UAV at CIMMYT’s research station in Ciudad Obregón, in Mexico’s Sonora state.

‘Sharing’ or ‘sparing’ land?

Written by Rodrigo Ordóñez on February 14, 2020. Posted in Blogs. 4 Comments on ‘Sharing’ or ‘sparing’ land?

Any fifth grader is familiar with the Cretaceous-Tertiary mass extinction, which saw dinosaurs — and three quarters of all species alive at that time — disappear from Earth, probably after it was struck by a very large asteroid. However, few people are aware the planet is currently going through a similar event of an equally large magnitude: a recent report from the World Wide Fund for Nature highlighted a 60% decline in the populations of over 4,000 vertebrate species monitored globally since 1970. This time, the culprit is not an asteroid, but human beings. The biggest threat we represent to other species is also the way we meet one of our most fundamental needs: food production.

As a response, scientists, particularly ecologists, have looked for strategies to minimize trade-offs between agriculture and biodiversity. One such strategy is “land sparing,” also known as the “Borlaug effect.” It seeks to segregate production and conservation and to maximize yield on areas as small as possible, sparing land for nature. Another strategy is “land sharing” or “wildlife-friendly farming,” which seeks to integrate production and conservation in the same land units and make farming as benign as possible to biodiversity. It minimizes the use of external inputs and retains unfarmed patches on farmland.

A heated debate between proponents of land sparing and proponents of land sharing has taken place over the past 15 years. Most studies, however, have found land sparing to lead to better outcomes than land sharing, in a range of contexts. With collaborators from CIFOR, UBC and other organizations, I hypothesized that this belief was biased because researchers assessed farming through a narrow lens, only looking at calories or crop yield.

Many more people today suffer from hidden hunger, or lack of vitamins and minerals in their diets, than lack of calories. Several studies have found more diverse and nutritious diets consumed by people living in or near areas with greater tree cover as trees are a key component of biodiversity. However, most of these studies have not looked at mechanisms explaining this positive association.

Forests for food

Studying seven tropical landscapes in Bangladesh, Burkina Faso, Cameroon, Ethiopia, Indonesia, Nicaragua and Zambia, we found evidence that tree cover directly supports diets in four landscapes out of seven. This may be through the harvest of bushmeat, wild fruits, wild vegetables and other forest-sourced foods. The study further found evidence of an agroecological pathway — that forests and trees support diverse crop and livestock production through an array of ecosystem services, ultimately leading to improved diets — in five landscapes out of seven. These results clearly demonstrate that although land sparing may have the best outcomes for biodiversity, it would cut off rural households from forest products such as forest food, firewood and livestock feed. It would also cut off smallholder farms from ecosystem services provided by biodiversity, and smallholders in the tropics tend to depend more on ecosystem services than on external inputs.

In Ethiopia, previous research conducted by some of the same authors has demonstrated that multifunctional landscapes that do not qualify as land sparing nor as land sharing may host high biodiversity whilst being more productive than simpler landscapes. They are more sustainable and resilient, provide more diverse diets and produce cereals with higher nutritional content.

The debate on land sparing vs. sharing has largely remained confined to the circles of conservation ecologists and has seldom involved agricultural scientists. As a result, most studies on land sparing vs. sharing have focused on minimizing the negative impact of farming on biodiversity, instead of looking for the best compromises between agricultural production and biodiversity conservation.

To design landscapes that truly balance the needs of people and nature, it is urgent for agronomists, agricultural economists, rural sociologists and crop breeders to participate in the land sparing vs. sharing debate.

This study was made possible by funding from the UK’s Department for International Development (DFID), the United States Agency for International Development (USAID) through the project Agrarian Change in Tropical Landscapes, and by the CGIAR Research Programs on MAIZE and WHEAT.

Include small indigenous production systems to improve rural livelihoods

Written by Mary Donovan on February 4, 2020. Posted in Press releases.

Maize-bean intercrop in the milpa system of the western highlands of Guatemala. (Photo: Carlos Gonzalez Esquivel)

Researchers from the Department of Energy’s Oak Ridge National Laboratory (ORNL) in Tennessee, United States, and the International Maize and Wheat Improvement Center (CIMMYT) in Texcoco, Mexico, describe why it is important for technical assistance to build upon indigenous farming knowledge and include women if programs are to succeed in tackling poverty and hunger in rural, Mesoamerican communities. Their findings, describing recent work in the Guatemalan Highlands, are recently published in Nature Sustainability.

According to government figures, 59% of Guatemalans live in poverty, concentrated in indigenous rural areas, such as the Western Highlands. Many factors contribute to pervasive malnutrition and a lack of employment opportunities for people in the Highlands. Recent crop failures associated with atypical weather events have exacerbated food shortages for Highland farm communities.

In early 2019, 90% of recent migrants to the southern border of the United States were from Guatemala, a majority of those from regions such as the Western Highlands. When they are unable to produce or purchase enough food to feed their families, people seek opportunities elsewhere. Historically, sugar cane and coffee industries offered employment but as prices for these commodities fall, fewer options for work are available within the region.

Indigenous peoples in the Highlands have been using a traditional agricultural production system called milpa for thousands of years. The milpa system involves growing maize together with climbing beans, squash, and other crops on a small plot of land. The maize plants support the growth of the climbing beans; the beans enrich soil through biological nitrogen fixation; and squash and other crops protect the soil from erosion, retain water, and prevent weeds.

However, frequent crop failures, declining farm sizes, and other factors result in low household production, forcing families to turn to non-agricultural sources of income or assistance from a family member working abroad. Studies have shown that as household income declines, dietary diversity decreases, which exacerbates undernutrition.

In prior decades, technical assistance for agriculture in Central America focused on larger farms and non-traditional export crops. The researchers recommend inclusion of indigenous communities to enhance milpa systems. Nutrition and employment options can be improved by increasing crop diversity and adopting improved seed varieties that are adapted to the needs of the local communities. This approach requires investments that recognize and advance ancestral knowledge and the role of indigenous women in milpa systems. The Nature Sustainability commentary highlights that technical assistance needs to include women and youth and should increase resilience in production systems to climate change, related weather events, pests, and disease.

“Improving linkages among local farmers, extensionists, students, and researchers is critical to identify and implement opportunities that result in more sustainable agricultural landscapes,” said Keith Kline, senior researcher at Oak Ridge National Laboratory. “For example, improved bean varieties have been developed that provide high-yields and disease resistance, but if they grow too aggressively, they choke out other milpa crops. And successful adoption of improved varieties also depends on whether flavor and texture meet local preferences.”

Strengthening institutions to improve agricultural development, health care, security, education can help create stronger livelihoods and provide the Western Highlands community with a foundation for healthier families and economic stability. As more reliable options become available to feed one’s family, fewer Guatemalans will feel pressured to leave home.

PUBLICATION:

“Enhance indigenous agricultural systems to reduce migration”

INTERVIEW OPPORTUNITIES:

Santiago Lopez-Ridaura, Senior Scientist, CIMMYT

FOR MORE INFORMATION, OR TO ARRANGE INTERVIEWS, CONTACT THE MEDIA TEAM:

Rodrigo Ordóñez, Communications Manager, CIMMYT.
r.ordonez@cgiar.org, +52 (55) 5804 2004 ext. 1167.

Ricardo Curiel, Communications Officer, CIMMYT.
r.curiel@cgiar.org, +52 (55) 5804 2004 ext. 1144.

ABOUT CIMMYT:

The International Maize and Wheat Improvement Center (CIMMYT) is the global leader in publicly-funded maize and wheat research and related farming systems. Headquartered near Mexico City, CIMMYT works with hundreds of partners throughout the developing world to sustainably increase the productivity of maize and wheat cropping systems, thus improving global food security and reducing poverty. CIMMYT is a member of the CGIAR System and leads the CGIAR Research Programs on Maize and Wheat and the Excellence in Breeding Platform. The Center receives support from national governments, foundations, development banks and other public and private agencies. For more information, visit staging.cimmyt.org.

One-minute science: Carolina Rivera explains wheat physiology

Written by Mary Donovan on January 22, 2020. Posted in Videos. 1 Comment on One-minute science: Carolina Rivera explains wheat physiology

Wheat provides, on average, 20% of the calories and protein for more than 4.5 billion people in 94 developing countries. To feed a growing population, we need both better agronomic practices and to grow wheat varieties that can withstand the effects of climate change and resist various pests and diseases.

Watch CIMMYT Wheat Physiologist Carolina Rivera discuss — in just one minute — choosing and breeding desirable wheat traits with higher tolerance to stresses.

CIMMYT and JAAS representatives signed the agreement to establish a screening facility for Fusarium head blight in Nanjing, China.

New international partnership to identify and develop resistance to dangerous wheat disease

Written by Marcia MacNeil on January 14, 2020. Posted in Press releases.

The CGIAR Research Program on Wheat (WHEAT), led by the International Maize and Wheat Improvement Center (CIMMYT) and the International Center for Agriculture in the Dry Areas (ICARDA), recently announced a partnership with the Jiangsu Academy of Agricultural Sciences (JAAS) in China to open a new screening facility for the deadly and fast-spreading fungal wheat disease Fusarium head blight, or FHB.

The new facility, based near the JAAS headquarters in Nanjing, aims to capitalize on CIMMYT’s world-class collection of disease-resistant wheat materials and the diversity of the more than 150,000 wheat germplasm in its Wheat Germplasm Bank to identify and characterize genetics of sources of resistance to FHB and, ultimately, develop new FHB-resistant wheat varieties that can be sown in vulnerable areas around the world.

“The participation of JAAS in the global FHB breeding network will significantly contribute to the development of elite germplasm with good FHB resistance,” said Pawan Singh, head of wheat pathology for CIMMYT.

“We expect that in 5 to 7 years, promising lines with FHB resistance will be available for deployment by both CIMMYT and China to vulnerable farmers, thanks to this new station.”

Fusarium head blight is one of the most dangerous wheat diseases. It can cause up to 50% yield loss and produce severe mycotoxin contamination in food and feed, which affects farmers in the form of increased health care and veterinary care costs, and reduced livestock production.

Even consuming low to moderate amounts of Fusarium mycotoxins may impair intestinal health, immune function and fitness. Deoxynivalenol (DON), a mycotoxin the fungus inducing FHB produces, has been linked to symptoms including nausea, vomiting, and diarrhea. In livestock, Fusarium mycotoxin consumption exacerbates infections with parasites, bacteria and viruses — such as occidiosis in poultry, salmonellosis in pigs and mice, colibacillosis in pigs, necrotic enteritis in poultry and swine respiratory disease.

In China, the world’s largest wheat producer, Fusarium head blight is the most important biotic constraint to production.

The disease is extending quickly beyond its traditionally vulnerable wheat growing areas in East Asia, North America, the southern cone of South America, Europe and South Africa — partly as a result of global warming, and partly due to otherwise beneficial, soil-conserving farming practices such as wheat-maize rotation and reduced tillage.

“Through CIMMYT’s connections with national agricultural research systems in developing countries, we can create a global impact for JAAS research, reaching the countries that are expected to be affected the expansion of FHB epidemic area,” said Xu Zhang, head of Triticeae crops research group at the Institute of Food Crops of the Jiangsu Academy of Agricultural Sciences.

The new collaborative effort will target Fusarium head blight research but could potentially expand to research on other wheat diseases as well. Wheat blast, for example, is a devastating disease that spread from South America to Bangladesh in 2016. Considering the geographical closeness of Bangladesh and China, a collaboration with CIMMYT, as one of the leading institutes working on wheat blast, could have a strong impact.

Although the platform is new, the two institutions have a longstanding relationship. The bilateral collaboration between JAAS and CIMMYT began in early 1980s with a shuttle breeding program between China and Mexico to speed up breeding for Fusarium head blight resistance. The two institutions also conducted extensive germplasm exchanges in the 1980s and 1990s, which helped CIMMYT improve resistance to Fusarium head blight, and helped JAAS improve wheat rust resistance.

Currently, JAAS and CIMMYT are working on Fusarium head blight under a project funded by the National Natural Science Foundation of China called “Elite and Durable Resistance to Wheat Fusarium Head Blight” that aims to deploy resistance genes/QTL in Chinese and CIMMYT germplasm and for use in wheat breeding.

This research is supported by CGIAR Fund Donors.

INTERVIEW OPPORTUNITIES:

Xinyao He, Wheat Pathologist and Geneticist, Global Wheat Program, CIMMYT. x.he@cgiar.org, +52 55 5804 2004 ext. 2218

FOR MORE INFORMATION, CONTACT THE MEDIA TEAM:

Marcia MacNeil, Communications Officer, CGIAR Research Program on Wheat. m.macneil@cgiar.org, +52 55 5804 2004 ext. 2070.

Rodrigo Ordóñez, Communications Manager, CIMMYT. r.ordonez@cgiar.org, +52 55 5804 2004 ext. 1167.

ABOUT CIMMYT:

ABOUT JAAS:

Jiangsu Academy of Agricultural Sciences (JAAS), a comprehensive agricultural research institution since 1931, strives to make agriculture more productive and sustainable through technology innovation. JAAS endeavors to carry out the Plan for Rural Vitalization Strategy and our innovation serves agriculture, farmers and the rural areas. JAAS provide more than 80% of new varieties, products and techniques in Jiangsu Province, teach farmers not only to increase yield and quality, but also to challenge conventional practices in pursuit of original ideas in agro-environment protection. For more information, visit home.jaas.ac.cn/.