Location: Oceania

Researcher Tamaya Peressini performs disease evaluations 10 days post infection at CIMMYT’s glasshouse facilities.

University of Queensland student researches tan spot resistance in wheat at CIMMYT

Written by on January 21, 2019. Posted in Features.

This story, part of a series on the international agricultural research projects of recipients of the Crawford Fund’s International Agricultural Student Award, was originally posted on the Crawford Fund blog.

In 2018, Tamaya Peressini, from the Queensland Alliance for Agriculture and Food Innovation (QAAFI), a research institute of the University of Queensland (UQ), travelled to CIMMYT in Mexico as part of her Honours thesis research, focused on a disease called tan spot in wheat.

Tan spot is caused by the pathogen Pyrenophora triciti-repentis (Ptr) and her project aimed to evaluate the resistance of tan spot in wheat to global races to this pathogen.

“The germplasm I’m studying for my thesis carries what is known as adult plant resistance (or APR) to tan spot, which has demonstrated to be a durable source of resistance in other wheat pathosystems such as powdery mildew,” Peressini said.

Tan spot is prevalent worldwide, and in Australia causes the most yield loss out of the foliar wheat diseases. In Australia, there is only one identified pathogen race that is prevalent, called Ptr Race 1. For Ptr Race 1, the susceptibility gene Tsn1 in wheat is the main factor that results in successful infection in Ptr strains that carry Toxin A. However, globally it is a more difficult problem, as there are seven other pathogen races that consist of different combinations of necrotrophic toxins. Hence, developing cultivars that are multi-race resistant to Ptr presents a significant challenge to breeders, as multiple resistant genes would be required for resistance to other pathogens.

“At CIMMYT, I evaluated the durability of APR I identified in plant material in Australia by inoculating with a local strain of Ptr and also with a pathogen that shares ToxA: Staganospora nodorum,” Peressini explained.

“The benefit of studying this at CIMMYT was that I had access to different strains of the pathogen which carry different virulence factors of disease, I was exposed to international agricultural research and, importantly, I was able to create research collaborations that would allow the APR detected in this population to have the potential to reach developing countries to assist in developing durably resistant wheat cultivars for worldwide deployment.”

Recent work in Dr Lee Hickey’s laboratory in Queensland has identified several landraces from the Vavilov wheat collection that exhibited a novel resistance to tan spot known as adult plant resistance (APR). APR has proven to be a durable and broad-spectrum source of resistance in wheat crops, namely with the Lr34 gene which confers resistance to powdery mildew and leaf stem rust of wheat.

“My research is focused on evaluating this type of resistance and identifying whether it is resistant to multiple pathogen species and other races of Ptr. This is important to the Queensland region, as the northern wheat belt is significantly affected by tan spot disease. Introducing durable resistance genes to varieties in this region would be an effective pre-breeding strategy because it would help develop crop varieties that would have enhanced resistance to tan spot should more strains reach Australia. Furthermore, it may provide durable resistance to other necrotrophic pathogens of wheat,” Peressini said.

The plant material Peressini studied in her honors thesis was a recombinant inbred line (RIL) population, with the parental lines being the APR landrace — carries Tsn1 — and the susceptible Australian cultivar Banks — also carries Tsn1. To evaluate the durability of resistance in this population to other strains of Ptr, this material along with the parental lines of the population and additional land races from the Vavilov wheat collection were sent to CIMMYT for Tamaya to perform a disease assay.

“At CIMMYT I evaluated the durability of APR identified in plant material in Australia by inoculating with a local strain of Ptr and also with a pathogen that shares ToxA: Staganospora nodorum. After infection, my plant material was kept in 100 per cent humidity for 24 hours (12 hours light and 12 hours dark) and then transferred back to regular glasshouse conditions. At 10 days post infection I evaluated the resistance in the plant material.”

From the evaluation, the APR RIL line demonstrated significant resistance compared to the rest of the Australian plant material against both pathogens. The results are highly promising, as they demonstrate the durability of the APR for both pre-breeding and multi-pathogen resistance breeding. Furthermore, this plant material is now available for experimental purposes at CIMMYT, where further trials can validate how durable the resistance is to other necrotrophic pathogens and also be deployed worldwide and be tested against even more strains of Ptr.

“During my visit at CIMMYT I was able to immerse myself in the Spanish language and take part in professional seminars, tours, lab work and field work around the site. A highlight for me was learning to prepare and perform toxin infiltrations for an experiment comparing the virulence of different strains of spot blotch,” Peressini said.

Peressini had a chance to visit the pyramids of Teotihuacán and other Mexican landmarks. — *During her stay in Mexico, Peressini had a chance to visit the pyramids of Teotihuacán and other cultural landmarks.*

“I also formed valuable friendships and research partnerships from every corner of the globe and had valuable exposure to the important research underway at CIMMT and insight to the issues that are affecting maize and wheat growers globally. Of course, there was also the chance to travel on weekends, where I was able to experience the lively Mexican culture and historical sites – another fantastic highlight to the trip!”

“I would like to thank CIMMYT and Dr Pawan Singh for hosting me and giving the opportunity to learn, grow and experience the fantastic research that is performed at CIMMYT and opportunities to experience parts of Mexico. The researchers and lab technicians were all so friendly and accommodating. I would also like to thank my supervisor Dr Lee Hickey for introducing this project collaboration with CIMMYT. Lastly, I would like to thank the Crawford Fund Queensland Committee for funding this visit; not only was I able to immerse myself in world class plant pathology research, I have been given valuable exposure to international agricultural research that will give my research career a boost in the right direction,” Peressini concluded.

Agricultural attachés visit CIMMYT

Written by on February 15, 2018. Posted in News.

Group photo of agricultural attachés at CIMMYT. Photo: CIMMYT/P.Arredondo

Agricultural attachés from 10 Mexican embassies visited the headquarters of the International Maize and Wheat Improvement Center (CIMMYT) on February 15. Countries represented included, Australia, Belgium, France, Germany, Hungary, Israel, Kazakhstan, Spain, the Netherlands and New Zealand.

Annie Tremblay, who was representing the Netherlands, gave a presentation on agriculture in the Netherlands. She emphasized the most commonly traded commodities between the Netherlands and Mexico and said she sees Mexico as a “sleeping giant” in the flower-trading world.

Following Tremblay’s presentation, Martin Kropff talked about how CIMMYT works globally to improve livelihoods. As Kropff explained CIMMYT’s biofortification work, he stressed that in a perfect world people would be able to diversify their diets and get nutrients from all kinds of plants, but that many people CIMMYT serves are living on less than two dollars a day. “This is not the solution, but it is a solution.”

Bram Govaerts gave a presentation about the work Sustainable Intensification Program in Latin America (SIP-LatAm) is doing and discussed the importance of public-private partnerships to the MasAgro program. This underscored Kropff’s points about the importance of public-private partnerships to CIMMYT and the importance of corporate social responsibility.

The final presentation to the group of attachés was by Hans Braun and Carolina Saint Pierre on the Global Wheat Program. They emphasized wheat as a good source of fiber, antioxidants, micronutrients and protein. The presentation focused on global partnerships in the wheat program and meeting future production goals.

The attachés then toured the CIMMYT campus, learning about the germplasm bank and biodiversity, the global wheat and maize breeding programs and goals to improve seeds and crops. They also were introduced to CIMMYT’s work enhancing nutrition, food safety and processing quality in the seed health labs and about sustainable intensification to improve rural livelihoods.

To conclude, attachés discussed the current priorities of their embassies and potential collaborations between their embassies in Mexico and CIMMYT.

Project helps African farmers identify regional best practices

Written by on October 11, 2017. Posted in News.

MEXICO CITY (CIMMYT) – Traditional farming systems in Africa must be updated for today’s climate and market challenges, according to a new report by the University of Queensland.

The Sustainable Intensification of Maize-Legume Systems for Food Security in Eastern and Southern Africa (SIMLESA) is an international research-for-development project working directly with farmers to solve some of the challenges they face.

For example, the project has greatly improved food production in Mozambique since 2010. It is also promoting rotational cropping systems with legumes in Tanzania to improve soil fertility as well as dietary diversity, and in Malawi, rainfall erosion has been reduced by 80 percent as farmers leave plant residues on fields to improve stability.

“The exact details of best practice change everywhere you go in Africa,” said Caspar Roxburgh, a research officer at the University of Queensland who works with SIMLESA. “A lot of this research just hasn’t been done yet in Africa.”

SIMLESA seeks to have an open dialogue between farmers and scientists to identify what works best in individual areas and define best practices for the region.

“We find out who’s doing the best, learn from them, and then we do the science to back it all up,” explained Roxburgh.

Over the past seven years, SIMLESA has helped more than 200,000 farmers adopt sustainable technologies and practices, improving yields and income.

SIMLESA is funded by the Australian Centre for International Agricultural Research (ACIAR) and implemented by the International Maize and Wheat Improvement Center (CIMMYT), the University of Queensland along with the governments of Ethiopia, Kenya, Tanzania, Malawi and Mozambique.

Read more about how SIMLESA is changing how food is grown in Africa here.

CSIRO and CIMMYT link on wheat phenomics, physiology and data

Written by Mike Listman on June 26, 2017. Posted in Features.

Building on a more than 40-year-old partnership in crop modelling and physiology, a two-day workshop organized by CIMMYT and Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) achieved critical steps towards a common framework for field phenotyping techniques, data interoperability and sharing experience.

Involving 23 scientists from both organizations and held at El Batán from 12 to 13 June 2017, the event emerged partly from a 2016 visit to CIMMYT by CSIRO Agriculture and Food executives and focused on wheat, according to Matthew Reynolds, CIMMYT wheat physiologist and distinguished scientist.

“Capitalizing on our respective strengths, we developed basic concepts for several collaborations in physiology and breeding, and will follow up within ongoing projects and through pursuit of new funding,” Reynolds said, signaling the following:

Comparison of technologies to estimate key crop traits, including GreenSeeker and hyperspectral images, IR thermometry, digital imagery and LiDAR approaches, while testing and validating prediction of phenotypic traits using UAV (drone) imagery.
Study of major differences between spike and leaf photosynthesis, and attempts to standardize gas exchange between field and controlled environments.
Work with breeders to screen advanced lines for photosynthetic traits in breeding nurseries, including proof of concept to link higher photosynthetic efficiency / performance to biomass accumulation.
Validation/testing of wheat simulation model for efficient use of radiation.
Evaluation of opportunities to provide environment characterization of phenotyping platforms, including systematic field/soil mapping to help design plot and treatment layouts, considering bioassays from aerial images as well as soil characteristics such as pH, salinity, and others.
Testing the heritability of phenotypic expression from parents to their higher-yielding progeny in both Mexico and Australia.
Extraction of new remote sensed traits (e.g., number of heads per plot) from aerial images by machine learning (ML) of scored traits by breeders and use of ML to teach those to the algorithm.
Demonstrating a semantic data framework’s use in identifying specific genotypes for strategic crossing, based on phenotypes.
Exchanging suitable data sets to test the interoperability of available data management tools, focusing on the suitability of the Phenomics Ontology Driven Data (PODD) platform for phenotypic data exchanges, integration, and retrieval.

The shared history of the two organizations in wheat physiology goes back to the hiring by Dr. Norman E. Borlaug, former CIMMYT wheat scientist and Nobel Prize laureate, of post-doctoral fellow Tony Fischer in 1970. Now an Honorary Research Fellow at CSIRO, Fischer served as director of CIMMYT’s global wheat program from 1989 to 1996 and developed important publications on wheat physiology earlier in his career, based on data from research at CIMMYT. In the early 1990s, Lloyd Evans, who established the Canberra Phytotron at CSIRO in the 1970s, served on CIMMYT’s Board of Trustees. Former CIMMYT maize post-doc Scott Chapman left for CSIRO in the mid-1990s but has partnered continuously with the Center on crop modelling and remote sensing. With funding from the Australian Centre for International Agricultural Research (ACIAR) in the late 1990s, CSIRO scientists Richard Richards, Tony Condon, Greg Rebetzke and Graham Farquhar began shared research with Reynolds and Martin van Ginkel, a CIMMYT wheat breeder, on stomatal aperture traits. Following work at CSIRO with Lynne McIntyre and Chapman, scientist Ky Matthews led the CIMMYT Biometrics Group from 2011 to 2012, collaborating with CIMMYT wheat physiologists on a landmark project to map complex physiological traits using the purpose-designed population, Seri/Babax. Reflecting the recent focus on climate resilience traits, Fernanda Dreccer of CSIRO is helping CIMMYT to establish the Heat and Drought Wheat Improvement Consortium (HeDWIC), among other important collaborations.

Global conference underscores complex socio-economic role of wheat

Written by on October 20, 2015. Posted in News.

SYDNEY, Australia, October 9 (CIMMYT) – A recent gathering of more than 600 international scientists highlighted the complexity of wheat as a crop and emphasized the key role wheat research plays in ensuring global food security now and in the future.

Specialist scientists and other members of the global wheat community attended two back-to-back wheat symposiums stretching over nine days from September 17 to 25 in Sydney, Australia. The first, a workshop hosted by the Borlaug Global Rust Initiative (BGRI), focused on Ug99 wheat rust disease. At the second, the five-day International Wheat Conference, which is held every five years, scientists dissected topics ranging from the intricate inner workings of the wheat genome to nutritional misrepresentations of wheat in the popular media.

Hans Braun, head of the Global Wheat Program at the International Maize and Wheat Improvement Center (CIMMYT) and the CGIAR Wheat Research Program, delivered a keynote presentation focused on new research, which shows that about 70 percent of spring bread and durum wheat varieties released in developing countries over the 20-year period between 1994 and 2014 were bred or are derived from wheat lines developed by scientists working for the CGIAR consortium of agricultural researchers. On a global basis, more than 60 percent of the released varieties are related to CIMMYT or International Center for Agricultural Research in the Dry Areas (ICARDA) germplasm.

Benefits of CGIAR wheat improvement research, conducted mainly by CIMMYT and ICARDA, range from $2.8 billion to $3.8 billion a year, he said, highlighting the economic benefits of international collaboration in wheat improvement research.

“Investment in agricultural research pays a huge dividend,” said Martin Kropff, CIMMYT’s director general, during a keynote address. “Investment in public research is a ‘triple win,’ leading to more food and income for the rural poor, lower prices for the urban poor, and extra stability and income for farmers in developed donor countries such as Australia, where gains are tens of millions a year.”

Bram Govaerts, who heads sustainable intensification efforts for CIMMYT in Latin America and leads the MasAgro project, demonstrated how minimal soil disturbance, permanent soil cover, and crop rotation can simultaneously boost yields, increase profits and protect the environment. Under MasAgro, some 400,000 hectares have been planted using improved technologies and agronomic practices; more than 200,000 producers are involved, of which 21 percent are women.

Sanjaya Rajaram, former CIMMYT wheat program director and 2014 World Food Prize laureate, described how wheat production must increase from the current 700 million metric tons a year to 1 billion metric tons a year by 2050 in order to keep up with population growth. Wheat currently provides 20 percent of calories and 20 percent of protein in the global human diet, he said, adding that the world’s food supply also faces the threat of climate-change related global warming.

“To date, scientists have been unable to sufficiently increase yields to meet demand through hybridization,” Rajaram said. “It’s time to invest in biotechnology to ensure yields can provide nourishment for an ever-hungrier planet. Simultaneously, we must maintain balance in the food chain and restore depleted carbon in the soil. Such concerns as disease resilience, seed diversity, water management and micronutrient imbalance must also be tackled.”

Ethiopia-based CIMMYT scientist David Hodson provided a retrospective on 10 years of Ug99 stem rust surveillance, while Kenya-based CIMMYT scientist Sridhar Bhavani provided an overview of progress made in breeding durable adult plant resistance to rust diseases and combining rust resistance in high yielding backgrounds over the past decade.

The Ug99 virulent disease threatens food security as it creeps steadily from its origin in Uganda towards the breadbasket regions of Asia.

“Technology can help us fight Ug99 stem rust, but we’re always going to need good field pathologists and researchers on the ground,” said Hodson, who also runs the Rust Tracker website.

Despite efforts to develop wheat that is resistant to damaging stem, stripe, and leaf rusts, these diseases, which have existed for 10,000 years, will continue to thwart scientists, said Philip Pardey, a professor in the Department of Applied Economics at the University of Minnesota, adding that the annual global investment in wheat rust research should be $108 million a year in perpetuity.

Pardey determined in a recent study that global losses from all three rusts average at least 15.04 tons a year, equivalent to an average annual loss of about $2.9 billion.

Jessica Rutkoski, a quantitative geneticist who works as an adjunct associate scientist at CIMMYT and an assistant professor at Cornell University, discussed the implications of new technologies for more durable resistance to rust.

Wheat physiology was also under discussion, with CIMMYT physiologists Matthew Reynolds and Gemma Molero delivering presentations on phenotyping, pre-breeding strategies, genetic gains, and spike photosynthesis. Their work also involves the use of ancient landraces, which may hold the secret to creating wheat resilient to global warming caused by climate change.

CIMMYT’s Alexey Morgunov demonstrated how a number of ancient landrace genotypes grown by farmers in Turkey have shown signs that they are resistant to abiotic and biotic stresses, which could help in the development of heat and disease resistant wheat varieties.

CIMMYT’s Zhonghu He discussed progress on wheat production and genetic improvement in China, while Sukhwinder Singh described his work characterizing gene bank biodiversity and mobilizing useful genetic variation – pre-breeding – into elite breeding lines. Bhoja Basnet covered hybrid wheat breeding at CIMMYT.

A session on nutrition and wheat targeted some of the myths swirling around wheat and gluten. CIMMYT’s Velu Govindan gave an update on his research into breeding and delivering biofortified high zinc wheat varieties to farmers. Zinc deficiency limits childhood growth and decreases resistance to infections.

Kropff also delivered a keynote presentation on wheat and the role of gender in the developing world, which preceded the BGRI Women in Triticum Awards, presented by Jeanie Borlaug Laube, daughter of the late Nobel Peace Prize laureate and CIMMYT wheat breeder Norman Borlaug.

Kropff explained that each component of the strategy for research into wheat farming systems at CIMMYT includes a gender dimension, whether it is focused on improving the evidence base, responding to the fact that both women and men can be end users and beneficiaries of new seeds and other technologies, or ensuring that gender is considered part of capacity-building efforts.

Bekele Abeyo, CIMMYT wheat breeder and pathologist for sub-Saharan Africa, won a $100 prize in the BGRI poster competition for his poster explaining the performance of CIMMYT-derived wheat varieties in Ethiopia.

A team of Kenyan scientists were recognized for their contribution to the protection of the global wheat supply from Ug99 stem rust disease. Plant pathologist Ruth Wanyera and wheat breeders Godwin Macharia and Peter Njau of the Kenya Agriculture and Livestock Research Organization received the 2015 BGRI Gene Stewardship Award.

Tackling wheat rust diseases requires $108 million a year, study shows

Written by on September 30, 2015. Posted in Features.

PhilipPardey — Economist Philip Pardey on the sidelines of the International Wheat Yield Conference in Sydney, Australia. CIMMYT/Julie Mollins

SYDNEY, Australia (CIMMYT) – When storybook character Alice stepped through the looking glass, the Red Queen encouraged her to run as fast as she could. Alice did, but despite her efforts she remained stuck in one place:

“Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that!” said the Red Queen.

Philip Pardey, a professor in the Department of Applied Economics at the University of Minnesota, referred to the Red Queen character in Lewis Carroll’s 19th century novel “Through the Looking Glass” at the International Wheat Conference in Sydney, Australia to illustrate a conundrum about wheat rust disease research.

Despite efforts to develop wheat that is resistant to damaging stem, stripe and leaf rusts, the diseases, which have existed for 10,000 years, will continue to thwart scientists, Pardey said, adding that the annual global investment in wheat rust research should be $108 million a year in perpetuity.

Currently, major projects such as the Borlaug Global Rust Initiative, which is directed at completely wiping out Ug99 stem rust, are funded for set periods of time and target specific strains of rust. It is unfeasible to expect a cure to be found, Pardey argued.

“It’s fallacious to think that we can ‘solve the stem rust problem’ through funding because the actual solution sows the seeds of its own destruction,” Pardey said, explaining that the fight against rusts is ongoing and must be funded continuously.

RED QUEEN EFFECT

Just as Alice and the Red Queen ran in one spot as hard as they could but got nowhere, rust sexual reproduction and genetic re-combinations fight to survive, allowing wheat rusts to co-evolve and adapt to changes in their environment.

In his study, Pardey determined that global losses from all three rusts average at least 15.04 million tons (552.8 million bushels) per year, equivalent to an average annual loss of about $2.9 billion a year.

He calculated that the economically justifiable investment in wheat rust research and development should be $108 million a year, equivalent to an annual investment of $0.51 per hectare per year across the current 212 million hectares (524 acres) of wheat worldwide.

“The nature of the intervention is that the very seeds of success of wheat breeders sows their own destruction,” Pardey said. “A co-evolutionary pressure is developed where rust has every incentive to survive, so when fungicides are used or the biology of the plants is altered to resist those fungi, it forces evolutionary pressure on the fungi to evolve around that resistance.”

Almost the entire global wheat crop is at risk of infection from wheat rusts, Pardey said. Globally, only 3.2 percent of the crop is grown in areas not susceptible to  infection, while 62.7 percent of the crop is in areas that are vulnerable to all three rusts.

“I’m hopeful Pardey’s research findings illustrate the importance of ongoing funding for wheat rust research,” said Hans Braun, head of the Global Wheat Program at the International Maize and Wheat Improvement Center (CIMMYT) and the Wheat Research Program overseen by the CGIAR consortium of agricultural researchers.

“Pardey’s research is critical in highlighting the severity of the threat from all three types of rust, showing that continuous funding in perpetuity is the best way to keep them in check. Consistent funding will make it easier to help farmers and protect food security by controlling the disease.”

GLOBAL RISKS

Through modeling for both seasonal vulnerability and system vulnerability, Pardey determined that losses at any particular location or point in time do not represent the average annual global losses over the longer term.

“In 1935, the United States lost a fifth of the crop to rust, last year they lost less than half a percent,” Pardey said. “So, I wouldn’t want to take last year’s loss as being representative of the losses of this disease, nor would I want to take the 1935 loss. It’s not representative.”

Pardey developed a framework to characterize the probabilistic nature of losses over the century, then conducted a Monte Carlo simulation – which assesses risk impact under all possible outcomes of a given scenario – to determine a loss average estimate.

“If wheat breeders are successful in getting modern varieties onto all the wheat areas around the world, there is additional value because they’re at a higher yield level when the disease pulls the yields down,” Pardey said.

“High-yield varieties make the value of the rust avoidance go up as the yield goes up. You’ve got a virtuous cycle. The rust resistance becomes more valuable the more extensive the higher yielding varieties are spread. An investment of $108 million a year just allows us to keep up with it – we’re running fast to stand still.”

Statistical support for the Turkish wheat community

Written by on September 21, 2015. Posted in News.

The soilborne pathogens (SBP) program at CIMMYT-Turkey, a Grain Research Development Corporation (GRDC) funded project, hosted two biometricians from the GRDC project Statistics for the Australian Grains Industry (SAGI): Beverley Gogel, a senior biometrician at the University of Adelaide, and Chong You, a biometrician at the University of Wollongong. Their visit, spanning from 31 August to 4 September, was sponsored under the umbrella of the CIMMYT Australia ICARDA Germplasm Evaluation (CAIGE) project.

The main objective of the visit was to advise on how to improve the program’s experimental design and data analysis under the framework of the GRDC-SBP, CIMMYT project. Gogel and You visited experimental locations in the different environments where the SBP group is testing/screening wheat materials against SBPs. They gave very valuable suggestions and recommendations on how to increase efficiency and improve estimates associated with the targeted research questions. The outcome of this statistical support will ultimately improve trial design and analysis and, hence, the results of the full trial process.

At the same time, Abdelfattah A. Dababat, in collaboration with the Transitional Zone Agriculture Research Institute, organized a two-day workshop titled “Understanding linear mixed models from the ground up: Statistical tools for the Turkish National Breeding Programs” to a group of 13 participants, including breeders, pre-breeders, physiologists and pathologists from Turkey, CIMMYT, and ICARDA. Gogel introduced the experimental trial designs used in Australia and described how to analyze both single trials and trials in multiple sites using the ASReml software. Chong You gave a presentation on QTL analysis and described improvements over the current methodologies used by Turkish national breeding programs.

Special thanks to the GRDC for funding this statistics workshop and to the Turkish Ministry of Food, Agriculture and Livestock for hosting and facilitating the workshop, especially the Transitional Zone Agriculture Research Institute, Eskisehir.

Why GM wheat may be the key to stave off world hunger

Written by on September 21, 2015. Posted in Blogs.

Sanjaya Rajaram is the 2014 World Food Prize laureate for scientific research that led to an increase in world wheat production by more than 200 million tons. Any views expressed are his own.

Unless global policymakers redouble their efforts to properly support a strategy to ensure a future food supply, the current hunger crisis threatens only to get worse.

A gathering of more than 500 scientists at the 2015 International Wheat Conference in Sydney, Australia, provides an opportunity to revisit these matters.

Already almost 800 million people worldwide – about one in nine people – are undernourished and do not get enough food to eat to lead a healthy active life, according to the U.N. Food and Agriculture Organization (FAO).

By 2050, the current global population of 7.3 billion is projected to grow 33 percent to almost 10 billion, according to the United Nations.

A recent report from the Taskforce on Extreme Weather and Global Food System Resilience projects that food demand, driven by population growth, demographic changes and increasing global wealth, will rise more than 60 percent.

The majority of hungry people live in developing countries where almost 14 percent of the population is undernourished, the FAO states in its 2015 “State of Food Insecurity in the World” report. The current refugee crisis in Europe provides dramatic evidence that wealthy countries must increase investments that will help promote food security and political stability in poor countries.

BOLSTERING FOOD SECURITY

Investments in agricultural science must be at the top of the list. Wheat currently provides 20 percent of calories and 20 percent of protein to the global human diet. In order to keep up with population growth, we must increase wheat production from the current annual 700 million metric tons a year to 1 billion. We also face the threat of climate change-related global warming.

Over the past 50 years, the 15-member CGIAR consortium of agricultural researchers – where I worked for most of my career with the International Maize and Wheat Improvement Center (CIMMYT) and the International Center for Agricultural Research in the Dry Areas (ICARDA) – have been helping smallholder farmers to increase crop yields and stave off devastating diseases.

To date, however, scientists have been unable to sufficiently increase yields to meet demand through hybridization. Production must grow 70 percent over the next 35 years – an achievable goal if annual wheat yields are increased from a current level of below 1 percent to at least 1.7 percent. It is time to invest in biotechnology to ensure yields can provide nourishment for an ever-hungrier planet.

Simultaneously, we must maintain balance in the food chain and restore depleted carbon in the soil. Such concerns as disease resilience, seed diversity, water management and micronutrient imbalance must be tackled.

Governments and the private sector must more fully support research efforts to accelerate the development of new wheat varieties or face the risk of further global insecurity related to price

CIMMYT scientists make a splash on Australian radio show

Written by on September 18, 2015. Posted in News.

The Australian Broadcasting Corporation broadcast its “Country Hour” program live from the International Wheat Conference at the Four Seasons Hotel in Sydney. The program features 2014 World Food Prize Laureate Sanjaya Rajaram and several CIMMYT scientists, including Sridhar Bhavani, David Hodson, Julio Huerta, Jessica Rutkoski and Hans Braun, director of the Global Wheat Program. Jeanie Borlaug Laube, the “first lady of wheat” and daughter of Nobel Peace Prize laureate and wheat breeder Norman Borlaug, is among interviewees selected by broadcaster Michael Condon.

Click here to listen to podcast.

CIMMYT scientists make a splash on Australian radio show

Written by on September 18, 2015. Posted in News. 1 Comment on CIMMYT scientists make a splash on Australian radio show

Click here to listen to podcast.

Replacing gender myths and assumptions with knowledge

Written by on September 18, 2015. Posted in Director General's corner.

CIMMYT Director General Martin Kropff speaks on the topic of ‘Wheat and the role of gender in the developing world’ prior to the 2015 Women in Triticum Awards at the Borlaug Global Rust Initiative Workshop in Sydney on 19 September.

If we are to be truly successful in improving the lives of farmers and consumers in the developing world, we need to base our interventions on the best evidence available. If we act based only on our assumptions, we may not be as effective as we could be or, even worse, actively cause harm.

One example is the common perception that women are not involved in the important wheat farming systems of North Africa and South Asia. By recognizing and engaging with these myths, we are beginning to build a more sophisticated understanding of how agriculture works as a social practice.

Currently, there are only a few published studies that take a closer examination of the roles played by women in wheat-based farming systems. These studies have found that, in some cases, men are responsible for land preparation and planting, and women for weeding and post-harvest activities, with harvest and transport duties being shared. Between different districts in India, huge variations may be found in the amount of time that women are actively involved in wheat agriculture. This shows that some careful study into the complexities of gender and agricultural labor may hold important lessons when intervening in any particular situation.

We must also never assume that, just because women are not as involved in agriculture in a particular context, they can not benefit from more information. In a survey carried out by CIMMYT researcher Surabhi Mittal in parts of rural India, it was found that women used a local cellphone agricultural advisory service just as much as men, and that this knowledge helped them get more involved in farming-related decision-making.

Gender is not just about women

For all that it is important to include women, along with other identity groups in project planning, implementation and data collection, it is important not to get into the trap of thinking that gender-integrated approaches are just about targeting women.

For example, the World Health Organization estimates that micronutrient deficiency affects at least two billion people around the world, causing poor health and development problems in the young. The effects of micronutrient deficiency start in the womb, and are most severe from then through to the first two years of life. Therefore it would make sense to target women of childbearing age and mothers with staple varieties that have been bio-fortified to contain high levels of important micronutrients such as zinc, iron or vitamin A.

However, to do so risks ignoring the process in which the decision to change the crop grown or the food eaten in the household is taken. Both men and women will be involved in that decision, and any intervention must therefore take the influence of gender norms and relations, involving both women and men, into account.

The way ahead

To move forward, each component of the strategy for research into wheat farming systems at CIMMYT also has a gender dimension, whether focused on improving the evidence base, responding to the fact that both women and men can be end users or beneficiaries of new seeds and other technologies, or ensuring that gender is considered as a part of capacity-building efforts.

Already, 20 of our largest projects are actively integrating gender into their work, helping to ensure that women are included in agricultural interventions and share in the benefits they bring, supplying a constant stream of data for future improvement.

We have also experienced great success in targeting marginalized groups. For instance, the Hill Maize Research Project in Nepal, funded by the Swiss Agency for Development and Cooperation (SDC) alongside the U.S. Agency for International Development (USAID), focused on food-insecure people facing discrimination due to their gender or social group. By supporting them to produce improved maize varieties in community groups, the project managed not only to greatly increase their incomes, but also to improve their self-confidence and recognition in society.

CIMMYT researchers are also among the leaders of a global push to encode gender into agricultural research together with other international research partnerships. In over 125 agricultural communities in 26 countries, a field study of gender norms, agency and agricultural innovation, known as GENNOVATE, is now underway. The huge evidence base generated will help spur the necessary transformation in how gender is included in agricultural research for development.

Further information:

The Borlaug Global Rust Initiative, chaired by Jeanie Borlaug Laube, has the overarching objective of systematically reducing the world’s vulnerability to stem, yellow, and leaf rusts of wheat and advocating/facilitating the evolution of a sustainable international system to contain the threat of wheat rusts and continue the enhancements in productivity required to withstand future global threats to wheat. This international network of scientists, breeders and national wheat improvement programs came together in 2005, at Norman Borlaug’s insistence, to combat Ug99. The Durable Rust Resistance in Wheat (DRRW) project at Cornell University serves as the secretariat for the BGRI. The DRRW, CIMMYT, the International Center for Agricultural Research in the Dry Areas (ICARDA) and the FAO helped establish the BGRI a decade ago. Funding is provided by the UK Department for International Development (DFID) and the Bill & Melinda Gates Foundation. For more information, please visit www.globalrust.org.

CIMMYT is the global leader in research for development in wheat and maize and related farming systems. CIMMYT works throughout the developing world with hundreds of partners to sustainably increase the productivity of maize and wheat to improve food security and livelihoods. CIMMYT belongs to the 15-member CGIAR Consortium and leads the Consortium Research Programs on wheat and maize. CIMMYT receives support from national governments, foundations, development banks and other public and private agencies.

Follow the #BGRI2015 hashtag on social media

Twitter: @CIMMYT, @KropffMartin and @GlobalRust

Value of CGIAR wheat estimated at up to $3.8 billion a year, research shows

Written by on September 11, 2015. Posted in Features.

A field at El Batán research station. CIMMYT/Julie Mollins

SYDNEY, Australia (CIMMYT) – About 70 percent of spring bread and durum wheat varieties released globally over the 20-year period between 1994 and 2014 were bred or are derived from wheat lines developed by scientists working for the 15-member CGIAR consortium of agricultural researchers, according to new research.

Benefits of CGIAR wheat improvement research, conducted mainly by the International Maize and Wheat Improvement Center (CIMMYT) and the International Center for Agricultural Research in the Dry Areas (ICARDA), range from $2.8 billion to $3.8 billion a year, states a new policy brief, which highlights the economic benefits of international collaboration in wheat improvement research.

The research featured in the policy brief, which follows a series of global wheat impact assessments initiated by CIMMYT, was the focus of a keynote address at the 9^th International Wheat Conference (IWC), hosted in Sydney, Australia from September 20 to 25, 2015.

“The policy brief shows the vital contribution CGIAR and CIMMYT have played in delivering international public goods in the form of improved maize and wheat varieties for resource poor consumers,” said Hans Braun, director of CIMMYT’s Global Wheat Program and the CGIAR Research Program (CRP) on Wheat.

“Values reflect the increasing use of high-yielding modern varieties on more land area and higher mean wheat prices during the period under review,” Braun said.

A primarily publicly funded breeding pipeline established by CIMMYT in the 1960s and 1970s to help stave off famine in Asia and other regions in the developing world, distributes about 600 elite lines a year worldwide through its international wheat improvement network.

About $30 million is invested in international wheat improvement research annually, mainly through publicly funded research conducted with CIMMYT, national partners, ICARDA and the Wheat CRP.

“Our findings indicate that international wheat improvement research continues to generate high returns,” Braun said.

“The influence of CIMMYT’s publicly funded research resounds throughout the developed world and in private industry. The private sector benefits from CIMMYT’s work, ultimately profiting from a trustworthy, streamlined wheat breeding system which eliminates the need for costly duplication of efforts.”

Globally, about 150 to 160 million tons of wheat are traded a year at a value of roughly $250 a ton.

“Agricultural sectors in wealthy donor countries also benefit from CIMMYT’s work,” said Martin Kropff, CIMMYT’s director general, referring to investment in research and development for the poor as a “triple win.”

“The effectiveness and the return on public sector investment are extremely high,” Kropff said. Investment leads to more food and income for the rural poor, lower prices for the urban poor and extra stability and income for farmers.”

Wheat currently provides 20 percent of calories and 20 percent of protein to the global human diet. However, in some countries, such as Afghanistan, wheat provides more than half the food supply.

By 2050, the current global population of 7.3 billion is projected to grow 33 percent to 9.7 billion, according to the United Nations. Demand for food, driven by population, demographic changes and increasing global wealth will rise more than 60 percent, according to a recent report from the Taskforce on Extreme Weather and Global Food System Resilience. This demand can only be met if global investments in wheat improvement are significantly increased.

Lantican, M.A., T.S. Payne, K Sonder, R. Singh, M. Van Ginkel, M. Braun, O. Erenstein and H.J. Braun. (in press). Impacts of International Wheat Improvement Research In the World, 1994-2014. Mexico, D.F.: CIMMYT

PDF Version

FOR FURTHER INFORMATION
Julie Mollins
News Editor & Media Manager
Global Wheat Program
International Maize and Wheat Improvement Center (CIMMYT)
E-mail: j.mollins at cgiar.org
Skype: juliemollins
Twitter:@jmollins

Related Research:

Braidotti, Gio. The international nature of germplasm enhancement [online]. Partners in Research for Development, Nov 2013: 27-29. Availability:<http://search.informit.com.au/ ISSN: 1031-1009. [cited 08 Sep 15].

Brennan, John P. and Kathryn J. Quade. Evolving usage of materials from CIMMYT in developing Australian wheat varieties. Australian Journal of Agricultural Research, 2006, 57, 947-952.

Australian visit to CIMMYT-Turkey strengthens decades-long collaboration

Written by on June 1, 2015. Posted in News.

The CIMMYT Australia ICARDA Germplasm Evaluation Project (CAIGE) organized a visit for Australian breeders to Turkey during 19 April-3 May. Participants learned about the germplasm evaluation and selection activities by the International Winter Wheat Improvement Program (IWWIP, a joint enterprise of CIMMYT and the Government of Turkey), the CIMMYT-Turkey Soil Borne Pathogen (SBP) program and the Regional Rust Research Center.

Crown rot trials in Konya field. From left to right: Drs. Morgounov, Dababat, Dieters, Trethowan, Ed-wards, Kan, Mullan, and Moody.
Photo: SBP-CIMMYT-Turkey.

The CIMMYT-Turkey collaboration has helped farmers throughout Central and West Asia. It all began in 1965, when a farmer in southern Turkey planted a high-yielding variety from Mexico that yielded five tons per hectare– several times more than the Turkish varieties then being planted. Wheat varieties from Mexico and new agronomic practices allowed Turkey to double its wheat production in just a decade, marking the start of a Turkish “Green Revolution.”

Turkey has since become a leader in wheat research. Turkish scientists with IWWIP have led groundbreaking research on zinc deficiency in soils and developed varieties that not only perform well in such conditions but also contain enhanced levels of zinc in the grain. Turkey is also a focal point for collaborative research on the effect of soil-borne pathogens and pests on wheat, as well as developing resistant varieties.

The five Australian breeders experienced first-hand Turkey’s rich history and innovations in wheat research and development. The group first visited the Bahri Dagdas International Agricultural Research Institute-National Drought Center in Konya, where Mustafa Kan, Institute Director and IWWIP Coordinator, welcomed them and gave an overview of the Institute. Alexei Morgounov, IWWIP Leader, and Mesut Keser, ICARDA’s Office Coordinator in Turkey, also gave presentations. The group then visited the labs and greenhouse facilities, crown rot yield trials and IWWIP breeding programs.

The next day, the group visited the Transitional Zone Agricultural Research Institute in Eskisehir. Director Sabri Cakir gave an overview of the Institute, while Savas Pelin, Head of the Institute’s breeding program in Eskisehir, gave a general presentation of its programs and activities. Participants also attended an overview of SBP’s activities, including screening for nematodes and crown rot in growth rooms, greenhouses and fields.

On the third day, attendees visited the Agricultural Research Institute in Izmir and Turkey’s National Gene Bank. They were introduced to IWWIP’s breeding activities, including germplasm evaluation, synthetic winter wheat development, spring x winter crossing and soil borne pathogen screening. The group also visited the Regional Rust Research Center, led by ICARDA scientist Nazari Kumarzi, where they observed the stripe, leaf and stem rust evaluation nurseries and afterwards visited the national barley breeding program.

In Izmir, visitors reviewed the soil-borne pathogen research, screening methodologies and facilities at CIMMYT-Turkey. CAIGE Project Leader Richard Trethowan inspected the germplasm provided by Australia to CIMMYT-Turkey as part of the crown rot initiative, a sub-grant project with the University of Sydney funded through the Grains Research and Development Corporation (GRDC) aimed at transferring resistant genes into key elite varieties for rapid adoption by breeding programs. Visitors were also briefed about the intensive SBP-IWWIP collaboration, particularly on incorporating resistant sources into high-yielding winter and spring wheats.

The Australian breeders included Richard Trethowan, Professor at the University of Sydney; Daniel Mullan and David Moody, Wheat and Barley Breeders from Intergrain; Mark Dieters, Senior Lecturer at the University of Queensland and Ian Edwards, CEO of Edstar Genetics. CIMMYT participants included Alexei Morgounov, CIMMYT-Turkey Country Representative; Amer Dababat, Soil Borne Disease Pathologist and Gul Erginbas-Orakci, Senior Research Associate.

Will yield increases continue to feed the world? The case for wheat

Written by on September 25, 2014. Posted in Blogs.

Tony Fisher is Plant Industry Honorary Fellow with the Commonwealth Scientific and Industrial Research Organization (CSIRO). Any opinions expressed are his own

The release of the bread wheat variety Borlaug100 earlier this year in the irrigated Yaqui Valley of northwest Mexico was both apt and reassuring.

The 100th anniversary of the late scientist Norman Borlaug’s birth was also celebrated in 2014. The performance of his namesake wheat variety represented a notable jump in potential yield, lifting bread wheat up to the potential of the best durum wheat variety, currently dominant in the valley.

Borlaug, who is credited with saving more than 1 billion lives, was awarded the Nobel Peace Prize in 1970 for his work at the International Maize and Wheat Improvement Center (CIMMYT) and its predecessor organization, the Office of Special Studies, where he began breeding wheat in the 1940s. Scientist Sanjaya Rajaram took over leadership of breeding in 1972, followed by Maarten van Ginkel in 1995, and Ravi Singh as breeder for irrigated areas in 2005. Between 1950 and 2014, potential yield of the approximately 160,000 hectares (400,000 acres) of wheat in the valley increased from about 5 metric tons (5.5 tons) per hectare to 9 metric tons per hectare, while farm yield rose five-fold, from 1.3 metric tons per hectare to 6.5 metric tons per hectare as varieties and agronomic management improved hand in hand.

These technologies have also had an impact on many developing countries with similar or related wheat agro-ecologies.

Many people are quick to point out that yield is not everything in global food security, that other issues are also important, including grain nutritive value, yield stability in the face of pests and diseases, crop input requirements, and more broadly, access of the poor to food (income and price), diversion of grain to animal feed and biofuel, and losses due to wastage.

However, nutritive value of the staples has not greatly changed, nor have yields become less stable, while input use per kilogram of grain produced has decreased, so that none of those issues are as fundamental to food security as farm yield increase.

Indeed yield increase has contributed more than 80 percent of the huge global consumption increase over the last 50 years (incidentally supplying of the burgeoning world population with more calories per capita). The increase in arable land area contributed only about half of the remaining supply increase, since cropping intensity (crops per year per hectare of arable land) also increased. This yield increase has saved vast areas of land from the plow. It is for these reasons that the subtitle of my recent book, Crop yields and global food security: will yield increase continue to feed the world?, asks whether yield increase will continue to feed the world.

While the book looked at past and prospective farm yield change across many crops, here space permits only a brief look at the global wheat yield situation.

The importance of wheat as a food calorie and protein source has already been pointed out in this “Wheat Matters” series of blogs: suffice to say wheat, being produced equally in developing and developed countries, is the top global source of calories (rice is actually the top source for poor consumers) and the top traded food grain, a position it is unlikely to lose.

Estimates of wheat-demand increase from 2010 to 2050 vary considerably: if prices are to be kept no greater than 2010 average real prices, I estimate a supply increase of about 50 percent is needed. Thus production needs to grow at 1.25 percent a year linear relative to the 2010 yield in order to meet estimated demand growth, but currently world wheat yield is growing at only 1 percent a year (relative to the 2010 trend yield of 3.0 metric tons per hectare).

While the potential yield of wheat has been lifted remarkably by breeding, as was seen in the example above, current rates of potential yield progress have slowed, averaging only 0.6 percent a year (range 0.3 to 1.1 percent) across 12 case studies around the world.

Experience suggests that the newest varieties are adopted relatively quickly by farmers and should as a consequence lift farm yield by about the same relative amount (i.e. 0.6 percent a year).

A separate source of progress in farm yield comes from farmers adopting new management practices, which close the gap between farm and potential yield. Actually, the current gap averaged only 48 percent (of farm yield itself), ranging from 23 percent to 69 percent across the case studies, with little difference between developing and developed countries, or irrigated and rainfed environments.

Interested in this subject? Find out more information here:

Fischer R.A., Byerlee D. and Edmeades G.O. 2014. Crop yields and global food security: will yield increase continue to feed the world? ACIAR Monograph No. 158. The Australian Centre for International Agricultural Research: Canberra. Access at http://aciar.gov.au/publication/mn158

Since the minimum yield gap, due to considerations of costs and risk, is around 30 percent (of farm yield), the scope for further yield gap closing is more limited in wheat than in the other major cereals, which, in contrast to wheat, showed many larger yield gaps, especially in developing countries.

Besides, the gap-causing constraints in the cases of wheat are generally multiple, related to small deficiencies in soil fertility, weeds and disease management and in the timing of operations. This puts special pressure in the case of wheat on lifting potential yield progress, and justifies substantial increases in research in this area. There is certainly no sign that a biological limit in wheat potential yield has been reached, and several new tools and strategies of sufficient promise are available to justify such investment.

Finally, although increasing carbon dioxide is probably lifting both potential and farm yields of wheat about 0.2 percent a year, it is suggested that out to 2050, this will be cancelled by the negative effect of mean temperature increase, which is now becoming more evident.

Australian wheat breeders’ relationship with Mexico spans more than 40 years

Written by on September 24, 2014. Posted in News.

In Australia, over 90 percent of local wheat varieties can be traced back to CIMMYT varieties, reports Kim Honan in a 17 September article on ABC’s Rural website.

For 40 years, Australian wheat breeders, as a part of the Grains Research and Development Corporation (GRDC)-funded CIMMYT/Australia/ICARDA Germplasm Evaluation (CAIGE) project, have traveled to Mexico annually to visit CIMMYT wheat fields.

“CIMMYT is a global program, it’s breeding for the world, so the nurseries they put together to distribute globally don’t necessarily have the traits that we’re looking for in Australia,” said Richard Trethowan, professor of Plant Breeding at the University of Sydney and former CIMMYT wheat breeder.

The trip allows the team to review materials and hand-select breeds with traits that might not have otherwise been available to Australian breeders. Each year, the scientists look for traits that show signs of potential yield increases, drought tolerance and heat tolerance. In particular, the breeders look for more diversity in each of those characteristics. During this trip, the team chose a set of about 350 varieties.

“This is a smorgasbord of diversity and here we can find that new resistance and bring that back to

Australia,” said Trethowan. “The breeder needs to take all this diversity for yield, resistance and adaptation to drought and heat, and improve that for grain quality to meet the Australian markets.”

Read Honan’s full report detailing the breeders’ trip to Mexico here.