Blogs – Page 54

A farmer harvests wheat in one of CIMMYT's research plots in Ethiopia. (Photo: P. Lowe/CIMMYT)

International scientists awarded grants supporting the HeDWIC-FFAR project to boost climate resilience in wheat

Written by Alison Doody on February 2, 2022. Posted in News.

Five international wheat research teams have been awarded grants for their proposals to boost climate resilience in wheat through discovery and development of new breeding technologies, screening tools and novel traits.

Wheat is one of the world’s most important staple crops, accounting for about 20% of all human calories and protein and is increasingly threatened by the impacts of climate change. Experts around the world are working on ways to strengthen the crop in the face of increasing heat and drought conditions.

The proposals were submitted in response to a call by the Heat and Drought Wheat Improvement Consortium (HeDWIC), led by the International Maize and Wheat Improvement Center (CIMMYT) and global partners, made in 2021.

The grants were made possible by co-funding from the Foundation for Food & Agriculture Research (FFAR) and in-kind contributions from awardees as part of a project which brings together the latest research from scientists across the globe to deliver climate resilient wheat to farmers as quickly as possible.

Cutting-edge wheat research

Owen Atkin, from the Centre for Entrepreneurial Agri-Technology at the Australian National University, leads the awarded project “Discovering thermally stable wheat through exploration of leaf respiration in combination with photosystem II capacity and heat tolerance.”

“The ratio of dark respiration to light and CO2 saturated photosynthesis is a clear indicator of the respiratory efficiency of a plant,” Atkin said. “We will measure and couple this indicator of respiratory efficiency to the leaf hyperspectral signature of field grown wheat exposed to heat and drought. The outcome could be a powerful tool which is capable of screening for wheat lines that are more productive when challenged with drought and heatwave.”

Hannah M. Schneider, of Wageningen University & Research, leads the awarded project examining the use of a novel root trait called Multiseriate Cortical Sclerenchyma to increase drought-tolerance in wheat.

“Drought is a primary limitation to global crop production worldwide. The presence of small outer cortical cells with thick, lignified cell walls (MCS: Multiseriate Cortical Sclerenchyma) is a novel root trait that has utility in drought environments,” Schneider said. “The overall objective of this project is to evaluate and develop this trait as a tool to improve drought resistance in wheat and in other crops.”

An improved wheat variety grows in the field in Islamabad, Pakistan. (Photo: A. Yaqub/CIMMYT)

John Foulkes, of the University of Nottingham, leads an awarded project titled “Identifying spike hormone traits and molecular markers for improved heat and drought tolerance in wheat.”

“The project aims to boost climate-resilience of grain set in wheat by identifying hormone signals to the spike that buffer grain set against extreme weather, with a focus on cytokinin, ABA and ethylene responses,” Foulkes said. “This will provide novel phenotyping screens and germplasm to breeders, and lay the ground-work for genetic analysis and marker development.”

Erik Murchie, from the University of Nottingham, leads an awarded project to explore new ways of determining genetic variation in heat-induced growth inhibition in wheat.

“High temperature events as part of climate change increasingly limit crop growth and yield by disrupting metabolic and developmental processes. This project will develop rapid methods for screening growth and physiological processes during heat waves, generating new genetic resources for wheat,” Murchie said.

Eric Ober of the National Institute of Agricultural Botany in the UK, leads the awarded project “Targeted selection for thermotolerant isoforms of starch synthase.”

“Wheat remains a predominant source of calories and is fundamental to regional food security around the world. It is urgent that breeders are equipped to produce new varieties with increased tolerance to heat and drought, two stresses that commonly occur together, limiting grain production. The formation and filling of grain depends on the synthesis of starch, but a key enzyme in the pathway, starch synthase, is particularly sensitive to temperatures over 25°C. However, there exist forms of this enzyme that exhibit greater thermotolerance than that found in most current wheat varieties,” Ober said. “This project aims to develop a simple assay to screen diverse germplasm for sources of more heat-resistant forms of starch synthase that could be bred into new wheat varieties in the future.”

Breakthroughs from these projects are expected to benefit other crops, not just wheat. Other benefits of the projects include closer interaction between scientists and breeders and capacity building of younger scientists.

How does CIMMYT’s improved maize get to the farmer?

New CIMMYT maize hybrids available from Eastern Africa Breeding Program

Written by Rodrigo Ordóñez on January 27, 2022. Posted in News.

The International Maize and Wheat Improvement Center (CIMMYT) is offering a new set of elite, improved maize hybrids to partners for commercialization in eastern Africa and similar agro-ecological zones. National agricultural research systems (NARS) and seed companies are invited to apply for licenses to register and commercialize these new hybrids, in order to bring the benefits of the improved seed to farming communities.

The deadline to submit applications to be considered during the first round of allocations is February 11, 2022. Applications received after that deadline will be considered during the following round of product allocations.

Information about the newly available CIMMYT maize hybrids from the Latin America breeding program, application instructions and other relevant material is available in the CIMMYT Maize Product Catalog and in the links provided below.

Product Profile	Newly available CIMMYT hybrids	*Basic traits*	*Nice-to-have / Emerging traits*
Eastern Africa Product Profile 1A (EA-PP1A)	CIM20EAPP1-01-38	Intermediate-maturing, white, high yielding, drought tolerant, NUE, and resistant to GLS, TLB, Ear rots, and MSV	MLN, Striga, FAW
	CIM20EAPP1-01-1
	CIM20EAPP1-01-16

You can download the full text and trial data summary for the CIMMYT Eastern Africa Maize Regional On-Station (Stage 4) and On-Farm (Stage 5) Trials: Results of the 2020 to 2021 Seasons and Product Announcement.

Applications must be accompanied by a proposed commercialization plan for each product being requested. Applications may be submitted online via the CIMMYT Maize Licensing Portal and will be reviewed in accordance with CIMMYT’s Principles and Procedures for Acquisition and use of CIMMYT maize hybrids and OPVs for commercialization. Specific questions or issues faced with regard to the application process may be addressed to GMP-CIMMYT@cgiar.org with attention to Nicholas Davis, Program Manager, Global Maize Program, CIMMYT.

APPLY FOR A LICENSE

Wheat titan honored posthumously by India

Written by Mike Listman on January 27, 2022. Posted in Features.

India has conferred posthumously upon Sanjaya Rajaram, 2014 World Food Prize laureate and former wheat breeder and Director of the Wheat Program at the International Maize and Wheat Improvement Center (CIMMYT), its prestigious 2022 Padma Bhushan Award in “Science and Engineering” in recognition of “distinguished service of high order.”

Among the most successful crop breeders in history, Rajaram, who passed away in 2021, personally oversaw the development of nearly 500 high-yielding and disease-resistant wheat varieties that were grown on at least 58 million hectares in over 50 countries, increasing global wheat production by more than 200 million tons and especially benefiting hundreds of millions of the resource-poor whose diets and livelihoods depend on this critical crop. In India and the neighboring South Asian nations of Bangladesh, Nepal, and Pakistan, inhabitants consume more than 120 million tons of wheat and wheat-based foods each year.

“Dr. Rajaram was a true titan of wheat breeding and an inspiration for young researchers, training and mentoring more than 700 scientists from developing countries worldwide,” said Bram Govaerts, CIMMYT director general. “He was also a complete gentleman, comporting himself with modesty and grace despite his many honors and accomplishments; his first priority was helping and crediting others. Rajaram is an example today for all of us to keep working with the final stakeholder — the farmer — in mind.”

The rise from rural beginnings

Born on a small farm in District Varanasi, Uttar Pradesh, India, in 1943, Rajaram studied genetics and plant breeding at the Indian Agricultural Research Institute in New Delhi. After receiving his Ph.D. from the University of Sydney, he joined CIMMYT in 1969, working as a wheat breeder alongside Nobel Prize Laureate and CIMMYT scientist Norman Borlaug in Mexico. Recognizing his talent and initiative, Borlaug appointed Rajaram as head of CIMMYT’s wheat breeding program at just 29 years of age.

The Padma Bhushan Award was announced by President Ram Nath Kovind of India on the country’s Republic Day, January 26. In 2015, Rajaram received the Pravasi Bharatiya Samman award, the highest honor conferred on Indians overseas. In 2001 he accepted the Padma Shri award from the government of India and, in 1998, the Friendship Award from the government of China.

Sanjaya Rajaram (Photo: Xochil Fonseca/CIMMYT)

Though a plant breeder and scientist by profession, Rajaram used the platform of his 2014 World Food Prize to promote an expansive, integrated vision for agricultural development. “If we want to make a change, research won’t do it alone; we need to work directly with farmers and to train young agronomists, ensuring they have a broad vision to address the problems in farmers’ fields,” Rajaram said at a news conference in Mexico City in 2014.

Rajaram also served as Director of the Integrated Gene Management Program at the International Center for Agricultural Research in the Dry Areas (ICARDA) before formally retiring in 2008. In his retirement, he continued as a special scientific advisor to CIMMYT and ICARDA.

Longstanding partners pushing forward for farmers

“India’s agricultural research community is proud of the distinguished achievements of Dr. Rajaram,” said Trilochan Mohapatra, Director General of the Indian Council of Agricultural Research (ICAR) and Secretary of the Department of Agricultural Research and Education (DARE), of India’s Ministry of Agriculture and Farmers’ Welfare. “ICAR greatly appreciates its valuable collaborations with CIMMYT to help farmers grow better crops and conserve resources under increasingly challenging conditions.”

The partnership of India with CIMMYT harks back to the 1960s-70s, when Indian farmers tripled national wheat yields in a few years by growing Borlaug’s high-yield wheat varieties and adopting improved farming practices.

In 2011, India and CIMMYT jointly launched the Borlaug Institute for South Asia (BISA) to improve cropping systems and food security, helping farmers to confront climate change and natural resource scarcities, among other challenges.

S. Ayyappan, former ICAR Director General who signed the joint declaration of intent for BISA’s establishment in India, has been honored with the 2022 Padma Shri Award.

CIMMYT is a non-profit international agricultural research and training organization focusing on two of the world’s most important cereal grains, maize and wheat, and related cropping systems and livelihoods. Wheat varieties derived from CIMMYT and ICARDA research cover more than 100 million hectares — nearly two-thirds of the area sown to improved wheat worldwide — and bring benefits in added grain worth as much as $3.8 billion each year.

A researcher from Bangladesh shows blast infected wheat spikes and explains how the disease directly attacks the grain. (Photo: Chris Knight/Cornell University)

New publications: Genome-wide breeding to curtail wheat blast

Written by Mike Listman on January 25, 2022. Posted in Publications.

A recent publication in the journal Frontiers of Plant Science provides results of the first-ever study to test genomic selection in breeding for resistance to wheat blast, a deadly disease caused by the fungus Magnaporthe oryzae that is spreading from its origin in Brazil to threaten wheat crops in South Asia and sub-Saharan Africa.

Genomic selection identifies individual plants based on the information from molecular markers, DNA signposts for genes of interest, that are distributed densely throughout the wheat genome. For wheat blast, the results can help predict which wheat lines hold promise as providers of blast resistance for future crosses and those that can be advanced to the next generation after selection.

In this study, scientists from the International Maize and Wheat Improvement Center (CIMMYT) and partners evaluated genomic selection by combining genotypic data with extensive and precise field data on wheat blast responses for three sets of genetically diverse wheat lines and varieties, more than 700 in all, grown by partners at locations in Bangladesh and Bolivia over several crop cycles.

The study also compared the use of a small number of molecular markers linked to the 2NS translocation, a chromosome segment from the grass species Aegilops ventricosa that was introduced into wheat in the 1980s and is a strong and stable source of blast resistance, with predictions using thousands of genome-wide markers. The outcome confirms that, in environments where wheat blast resistance is determined by the 2NS translocation, genotyping using one-to-few markers tagging the translocation is enough to predict the blast response of wheat lines.

Finally, the authors found that selection based on a few wheat blast-associated molecular markers retained 89% of lines that were also selected using field performance data, and discarded 92% of those that were discarded based on field performance data. Thus, both marker-assisted selection and genomic selection offer viable alternatives to the slower and more expensive field screening of many thousands of wheat lines in hot-spot locations for the disease, particularly at early stages of breeding, and can speed the development of blast-resistant wheat varieties.

Read the full study:
Genomic Selection for Wheat Blast in a Diversity Panel, Breeding Panel and Full-Sibs Panel

The research was conducted by scientists from the International Maize and Wheat Improvement Center (CIMMYT), the Bangladesh Wheat and Maize Research Institute (BWMRI), the Instituto Nacional de Innovación Agropecuaria y Forestal (INIAF) of Bolivia, the Borlaug Institute for South Asia (BISA) and the Indian Council of Agricultural Research (ICAR) in India, the Swedish University of Agricultural Sciences (Alnarp), and Kansas State University in the USA. Funding for the study was provided by the Bill & Melinda Gates Foundation, the Foreign and Commonwealth Development Office of the United Kingdom, the U.S. Agency for International Development (USAID), the CGIAR Research Program on Wheat (WHEAT), the Indian Council of Agricultural Research (ICAR), the Swedish Research Council, and the Australian Centre for International Agricultural Research (ACIAR).

Cover photo: A researcher from Bangladesh shows blast infected wheat spikes and explains how the disease directly attacks the grain. (Photo: Chris Knight/Cornell University)

How interactions among hidden enemies and drought effects grain yield and disease severity in bread wheat

Written by Sarah McLaughlin on January 25, 2022. Posted in Features.

In nature, plants are simultaneously exposed to a complex system of biotic and abiotic stresses that limit crop yield. The cereal cyst nematode Heterodera filipjevi and dryland crown rot, caused by Fusarium, are important diseases facing cereal production around the world that cause significant yield loss. Yield loss accelerates when those diseases coexist with other abiotic stresses, such as drought.

Hexaploid bread wheat (Triticum aestivum L.) is an essential staple food for a large part of the world’s population, covering around 20% of daily caloric intake in the human diet, with global production at about 670.8 million tons per year, produced over 215.4 million hectares of land worldwide. Therefore, the program studying soil-borne pathogens at the International Maize and Wheat Improvement Center (CIMMYT)’s Turkey office initiated a study to investigate the effect of soil borne diseases (H. filipjevi and Fusarium culmorum) individually and in combination with drought on some morphological and physiological traits in wheat germplasm with different genetic tolerances to the three studied factors.

In this study, yield components included thousand kernel weight, spike weight, seed per spike and total grain yield. Morphological parameters, including plant height, final plant number (seedling emergence), relative water content, leaf chlorophyll content, H. filipjevi cyst number and presence of crown rot, were studied under greenhouse conditions in Turkey.

The main findings of the study showed that the interaction among water stress, F. culmorum and H. filipjevi increased the damage on the wheat parameters studied when compared with each stress applied alone. One of the most significant damages was seen in high seedling mortality under the three combined stresses (56% seedling death rate), which indicates the damage on wheat yield might occur at the seedling stage rather than later stages. This reduces plant density per area, which was ultimately responsible for low grain yield produced. The known dryland disease, crown rot, caused by F. culmorum, was significantly pronounced under water-stressed conditions.

In all studied parameters, the lowest damage was found among the resistant cultivars to biotic or abiotic stresses. This underscores the importance of wheat breeding programs to develop resistant germplasm, and reminds farmers to replace their old, susceptible varieties with new, resistant ones.

Based on our intensive experience in the CWANA region, most wheat growers basically do not recognize soil borne pathogens as a problem. In fact, most of them do not know that what nematode or soil fungal species are in their fields affecting yield. The term “hidden enemy” perfectly applies to the problems in the region and beyond. Integrated pest management (IPM) is, however, not practiced in the entire region and soil borne pathogen-induced yield losses are simply accepted.

We can conclude from this study that yield reduction in wheat due to soil borne pathogens could be lessened by improving and understanding the concept of IPM in the region where the practice of winter mono-culturing of wheat is the norm. Management of cereal soil-borne pathogens, especially cereal cyst nematode and crown rot, could involve an integrated approach that includes crop rotation, genetic resistance, crop nutrition and appropriate water supply.

Cover photo: Four different test crops show different stresses: T1V8 = Drought, T2V8 = Drought and Nematodes, T3V8 = Drought and fungus, T4V8 = Drought and nematode and fungus together. (Credit: CIMMYT)

Wheat fields at CIMMYT’s experimental station in Ciudad Obregón, Sonora state, Mexico. Photo: M. Ellis/CIMMYT.

Climate change slows wheat breeding progress for yield and wide adaptation, new study finds

Written by Mike Listman on January 18, 2022. Posted in Features.

Nearly four decades of repeated crossing and selection for heat and drought tolerance have greatly improved the climate resilience of modern wheat varieties, according to new research emerging from a cross-continental science collaboration.

At the same time, climate change has likely slowed breeding progress for high-yielding, broadly adapted wheat, according to the new study, published recently in Nature Plants.

“Breeders are usually optimistic, overlooking many climate change factors when selecting,” said Matthew Reynolds, wheat physiologist at the International Maize and Wheat Improvement Center (CIMMYT) and co-author of the publication. “Our findings undermine this optimism and show that the amplified interaction of wheat lines with the environment due to climate change has made it harder for breeders to identify outstanding, broadly adapted lines.”

What do 10 million data points tell scientists?

Each year for nearly half a century, wheat breeders taking part in the CIMMYT-led International Wheat Improvement Network (IWIN) have tested approximately 1,000 new, experimental wheat lines and varieties at some 700 field sites in over 90 countries.

Promising lines are taken up by wheat breeding programs worldwide, while data from the trials is used to guide global breeding and other critical wheat research, explained Wei Xiong, CIMMYT crop modeler/physiologist based in China and lead author of the new paper.

“To date, this global testing network has collected over 10 million data points, while delivering wheat germplasm estimated to be worth several billion dollars annually in extra productivity to hundreds of millions of farmers in less developed countries,” Xiong said.

Xiong and his colleagues analyzed “crossover interactions” — changes in the relative rankings of pairs of wheat lines — in 38 years of data from four kinds of wheat breeding trials, looking for the extent to which climate change or breeding progress have flipped those rankings. Two of the trials whose data they examined focused on yield in bread wheat and durum wheat, while the other two assessed wheat lines’ performance under high temperatures and in semi-arid environments, respectively.

In addition to raising yields, wheat breeders are endowing the crop with added resilience for rising temperatures.

“We found that warmer and more erratic climates since the 1980s have increased ranking changes in global wheat breeding by as much as 15 percent,” Xiong said. “This has made it harder for breeders to identify superior, broadly adapted lines and even led to scientists discarding potentially useful lines.”

Conversely, wheat cultivars emerging from breeding for tolerance to environmental stresses, particularly heat, are showing substantially more stable yields across a range of environments and fostering wheat’s adaptation to current, warmer climates, while opening opportunities for larger and faster genetic gains in the future, according to the study.

Past research has shown that modern wheat varieties not only increase maximum yields but also guarantee more reliable yields, a benefit that adds millions of dollars each year to farm income in developing countries and greatly reduces farmers’ risk.

“Among other things, our findings argue for more targeted wheat breeding and testing to address rapidly shifting and unpredictable farming conditions,” Reynolds added.

Read the full study:
Increased ranking change in wheat breeding under climate change

Cover photo: Wheat fields at CIMMYT’s experimental station in Ciudad Obregón, Sonora state, Mexico. Photo: M. Ellis/CIMMYT.

Fruits, vegetables and bread. Photo: Ella Olsson (CC BY 2.0)

Fruits and vegetables are essential, but there are three reasons why it takes cereals to feed the world

Written by Rodrigo Ordóñez on January 17, 2022. Posted in Blogs.

Like many development research and funding organizations, the Australian Centre for International Agricultural Research (ACIAR) is emphasizing a renewed commitment to a nutrition-sensitive approach to agricultural development projects.

As part of the International Year of Fruits and Vegetables, a recent blog proposed that one central issue of improved nutrition is consumption of more fruit and vegetables. We agree that a diverse diet including fruits and vegetables should be accessible to every person. Here we highlight the presence of a wider picture.

In the past decade, awareness has grown about the importance of diets that are rich in vitamins and minerals, and the need to combat micronutrient malnutrition which can lead to irreversible health outcomes impacting entire economies and perpetuating a tragic cycle of poverty and economic stagnation.

Lack of vitamins and minerals, often called “hidden hunger,” is not confined to lower-income food-insecure countries. In richer countries we clearly see a transition towards energy-rich, micronutrient-poor diets. In fact, populations throughout the world are eating more processed foods for reasons of convenience and price. To hit our global hunger and health targets we need to invest in nutrition-sensitive agricultural research and production as well as promoting affordable diets with varied and appealing nutrient-rich foods.

Alongside hunger, we have a pandemic of diet-related diseases that is partly caused by the over-consumption of energy-rich junk diets. This is because modern food formulations are often shaped towards addictive and unhealthy products. We see this in rising levels of obesity and diabetes, some cancers, heart diseases and chronic lung conditions.

Investing in agri-food research and improving nutrition will be much cheaper than treating these diet-related non-communicable diseases. Besides being healthier, many people will be much happier and able to live more productive lives.

Yet, the picture is bigger than micronutrient malnutrition. Even if new investments in research enable us to increase the production and delivery of fruits, vegetables and other nutrient-rich foods such as legumes and nuts, we will not have cracked the whole problem of food security, nutrition and health.

Besides “hidden hunger,” many hundreds of millions of people worldwide are hungry because they still lack the basic availability of food to live and work.

Women cook chapatis in Sani, Zanskar valley, India. Photo: SandeepaChetan's Travels (CC BY-NC-ND 2.0) — Women cook chapatis in Sani, Zanskar valley, India. Photo: SandeepaChetan’s Travels (CC BY-NC-ND 2.0)

Enter cereals. Wheat, maize and rice have been the major sources of dietary energy in the form of carbohydrates in virtually all societies and for thousands of years: recent research in the Middle East suggests that the original “paleo” diet was not just the result of hunting and gathering, but included cereals in bread and beer!

There are three reasons why cereals are essential to feeding the world:

First, nutritionists and medics tell us that cereals not only provide macronutrients — carbohydrates, proteins and fats — and micronutrients — vitamins and minerals. We now know that cereals are important sources of bioactive food components that are not usually classed as nutrients, but are essential to health all the same. These are compounds like carotenoids, flavonoids, phytosterols, glucosinolates and polyphenols, which are found naturally in various plant foods and have beneficial antioxidant, anticarcinogenic, anti-inflammatory and antimicrobial properties, likely to be important in mitigating and/or combating disease.
Second, whole-grain foods, especially wheat, are also a major source of dietary fibre, which is essential for efficient digestion and metabolism. Fibre from cereals also nourishes the human gut flora whose products such as short-chain fatty acids have many health benefits including combatting some cancers. Eating such carbohydrates also helps us recognise that we have eaten sufficiently, so that we know when “enough is enough.”
Third, cereal foods are relatively cheap to produce and to buy, and also easy to transport and preserve. Hence, supplies are relatively stable, and good nutrition from cereals is likely to remain accessible to less affluent people.

But all is not well with cereals these days. Cereals are under siege from climate change-related heat and drought, and new and more virulent forms of plant diseases, which threaten our agriculture and natural resources. There remains much research to undertake in this era of rapidly changing climatic conditions, and of economic and political stresses.

Here are a few strategies for agri-food research and its supporters:

We can further increase the nutritional content of cereal foods through biofortification during plant breeding.
We can produce disease- and heat-resilient varieties of grains that are efficient in the use of water and fertilizer, and whose production is not labor-intensive.
By working with communities, we can adapt new production technologies to local conditions, especially where women are the farmers.
We can enhance the quality of cereal foods through nutrient fortification during milling, and by better processing methods and food formulation.
Experts in all agri-food disciplines can work together to inform and “nudge” consumers to make healthy food purchasing decisions.

Cereals matter, but in an age of misinformation, we still have to be cautious: Some people are susceptible to certain components of cereals such as gluten. People who are medically diagnosed with cereal intolerances must shape their diets accordingly and get their carbohydrates and bioactive food components from other sources.

So, we cannot live on bread alone: We should aim for diets which are rich in diverse foods.

Such diets include fruits and vegetables that must be accessible to people in different regions, particularly to the most vulnerable, and that provide different macronutrients, micronutrients and essential bioactive components. For most of us, the health-promoting content of cereals means that they must remain a major part of the global diet.

Nigel Poole is Emeritus Professor of International Development at SOAS University of London and Consultant at the International Maize and Wheat Improvement Center (CIMMYT).

Rajiv Sharma is Senior Scientist at the International Maize and Wheat Improvement Center (CIMMYT).

Alison Bentley is the Director of the Global Wheat Program at the International Maize and Wheat Improvement Center (CIMMYT).

Meet The Indian Researcher Helping To Solve The Deadly Aflatoxin Puzzle

Written by Bea Ciordia on January 6, 2022. Posted in In the media.

Indian agricultural researcher Pooja Bhatnagar-Mathur, a Principal Scientist at CIMMYT, says aflatoxin, a toxin produced from soil fungus and found in groundnuts like peanuts, is a serious public health and food safety problem around the globe.

Agricultural research fights global food shocks

Written by Rodrigo Ordóñez on December 30, 2021. Posted in In the media.

In an op-ed on Newsweek, CIMMYT director general Bram Govaerts wrote argues the best protection is actually reducing food system risks by building food system resilience against shocks. He highlighted how previous investments in agricultural research and development generated evidence-based strategies that mitigate global food price crisis.

A banana producer in Kenya. (Photo: N. Palmer/CIAT)

New grafting technique could combat the disease threatening Cavendish bananas

Written by Rodrigo Ordóñez on December 22, 2021. Posted in Press releases.

Grafting wheat shoot to oat root gives the plant tolerance to a disease called “Take-all,” caused by a pathogen in soil. The white arrow shows the graft junction. (Photo: Julian Hibberd)

Grafting is the technique of joining the shoot of one plant with the root of another, so they continue to grow together as one. Until now it was thought impossible to graft grass-like plants in the group known as monocotyledons because they lack a specific tissue type, called the vascular cambium, in their stem.

Researchers at the University of Cambridge have discovered that root and shoot tissues taken from the seeds of monocotyledonous grasses — representing their earliest embryonic stages — fuse efficiently. Their results are published today in the journal Nature.

An estimated 60,000 plants are monocotyledons; many are crops that are cultivated at enormous scale, for example rice, wheat and barley.

The finding has implications for the control of serious soil-borne pathogens including Panama Disease, or Tropical Race 4, which has been destroying banana plantations for over 30 years. A recent acceleration in the spread of this disease has prompted fears of global banana shortages.

“We’ve achieved something that everyone said was impossible. Grafting embryonic tissue holds real potential across a range of grass-like species. We found that even distantly related species, separated by deep evolutionary time, are graft compatible,” said Julian Hibberd in the University of Cambridge’s Department of Plant Sciences, senior author of the report.

The technique allows monocotyledons of the same species, and of two different species, to be grafted effectively. Grafting genetically different root and shoot tissues can result in a plant with new traits — ranging from dwarf shoots, to pest and disease resistance.

Alison Bentley, CIMMYT Global Wheat Program Director and a contributor to the report, sees great potential for the grafting method to be applied to monocot crops grown by resource-poor farmers in the Global South. “From our major cereals, wheat and rice, to bananas and matoke, this technology could change the way we think about adapting food security crops to increasing disease pressures and changing climates.”

High magnification images show successful grafting of wheat in which a connective vein forms between root and shoot tissue after four months. White arrows show the graft junction. (Photo: Julian Hibberd)Monocotyledons breakthrough

The scientists found that the technique was effective in a range of monocotyledonous crop plants including pineapple, banana, onion, tequila agave and date palm. This was confirmed through various tests, including the injection of fluorescent dye into the plant roots — from where it was seen to move up the plant and across the graft junction.

“I read back over decades of research papers on grafting and everybody said that it couldn’t be done in monocots. I was stubborn enough to keep going — for years — until I proved them wrong,” said Greg Reeves, a Gates Cambridge Scholar in the University of Cambridge Department of Plant Sciences, and first author of the paper.

“It’s an urgent challenge to make important food crops resistant to the diseases that are destroying them,” Reeves explained. “Our technique allows us to add disease resistance, or other beneficial properties like salt-tolerance, to grass-like plants without resorting to genetic modification or lengthy breeding programmes.”

The world’s banana industry is based on a single variety, called the Cavendish banana — a clone that can withstand long-distance transportation. With no genetic diversity between plants, the crop has little disease-resilience. And Cavendish bananas are sterile, so disease resistance cannot be bred into future generations of the plant. Research groups around the world are trying to find a way to stop Panama Disease before it becomes even more widespread.

Image of date palm two and a half years after grafting. Inset shows a magnified region at the base of the plant, with the arrowhead pointing to the graft junction. (Photo: Julian Hibberd)

Grafting has been used widely since antiquity in another plant group called the dicotyledons. Dicotyledonous orchard crops — including apples and cherries, and high-value annual crops including tomatoes and cucumbers — are routinely produced on grafted plants because the process confers beneficial properties, such as disease resistance or earlier flowering.

The researchers have filed a patent for their grafting technique through Cambridge Enterprise. They have also received funding from Ceres Agri-Tech, a knowledge exchange partnership between five leading universities in the United Kingdom and three renowned agricultural research institutes.

“Panama disease is a huge problem threatening bananas across the world. It’s fantastic that the University of Cambridge has the opportunity to play a role in saving such an important food crop,” said Louise Sutherland, Director of Ceres Agri-Tech.

Ceres Agri-Tech, led by the University of Cambridge, was created and managed by Cambridge Enterprise. It has provided translational funding as well as commercialisation expertise and support to the project, to scale up the technique and improve its efficiency.

This research was funded by the Gates Cambridge Scholarship programme.

Read the study:

Monocotyledonous plants graft at the embryonic root-shoot interface

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

Marcia MacNeil, Head of Communications, CIMMYT.

Jacqueline Garget, Communications Manager, Office of External Affairs and Communications, University of Cambridge

ABOUT THE UNIVERSITY OF CAMBRIDGE:

www.cam.ac.uk

The University of Cambridge is one of the world’s top ten leading universities, with a rich history of radical thinking dating back to 1209. Its mission is to contribute to society through the pursuit of education, learning and research at the highest international levels of excellence.

The University comprises 31 autonomous Colleges and 150 departments, faculties and institutions. Its 24,450 student body includes more than 9,000 international students from 147 countries. In 2020, 70.6% of its new undergraduate students were from state schools and 21.6% from economically disadvantaged areas.

Cambridge research spans almost every discipline, from science, technology, engineering and medicine through to the arts, humanities and social sciences, with multi-disciplinary teams working to address major global challenges. Its researchers provide academic leadership, develop strategic partnerships and collaborate with colleagues worldwide.

The University sits at the heart of the ‘Cambridge cluster’, in which more than 5,300 knowledge-intensive firms employ more than 67,000 people and generate £18 billion in turnover. Cambridge has the highest number of patent applications per 100,000 residents in the UK.

ABOUT CIMMYT:

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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.

Cover photo: A banana producer in Kenya. (Photo: N. Palmer/CIAT)

Children eat lunch at a mobile crèche outside Delhi, India. (Photo: Atul Loke/ODI)

High-yielding staple crops improve health and prosperity in developing countries

Written by Marcia MacNeil on December 17, 2021. Posted in Features.

Several recent studies document the long-term health and economic benefits from the “Green Revolution” — the widespread adoption of high-yielding staple crop varieties during the last half of the 20th century — and argue for continued investment in the development and use of such varieties.

Analyzing data relating to more than 600,000 births between 1961 and 2000 across 37 developing countries, scientists led by the World Bank’s Jan von der Goltz found that the diffusion of modern crop varieties during the Green Revolution reduced infant mortality by 2.4 to 5.3 percentage points.

“Our estimates provide compelling evidence that the health benefits of broad-based increases in agricultural productivity should not be overlooked,” the authors state. “From a policy perspective, government subsidies for inputs leading to a green revolution as well as investments in extension and R&D programs seem to be important.”

Norman Borlaug (fourth from right) shows a plot of Sonora-64 wheat — one of the semi-dwarf, high-yield, disease-resistant varieties that was key to the Green Revolution — to a group of young international trainees at CIMMYT's experimental station in Ciudad Obregon, Sonora state, Mexico. (Photo: CIMMYT) — Norman Borlaug (fourth from right) shows a plot of Sonora-64 wheat — one of the semi-dwarf, high-yield, disease-resistant varieties that was key to the Green Revolution — to a group of young international trainees at CIMMYT’s experimental station in Ciudad Obregon, Sonora state, Mexico. (Photo: CIMMYT)

The COVID-19 pandemic exposed the fragility of the global food system and the need to transform it, increasing its environmental and economic resilience to withstand future threats, and underpinning healthier diets. The studies suggest that improved versions of cereal crops such as rice, wheat, and maize can play a key role.

“Our work speaks to the importance of supporting innovation and technology adoption in agriculture as a means of fostering economic development, improved health, and poverty reduction, said author Jan von der Goltz. “It also suggests that it is reasonable to view with some alarm the steady decline in funding for cereal crop improvement over the last few decades in sub-Saharan Africa, the continent with least diffusion of modern varieties.”

Likewise, a study co-authored by Prashant Bharadwaj of the University of California, San Diego, concluded that farmer adoption of high-yielding crop varieties (HYVs) in India reduced infant mortality dramatically across the country. Between 1960 and 2000, infant deaths dropped from 163.8 to 66.6 per 1,000 live births, and this occurred during the decades of India’s wheat productivity leap from 0.86 to 2.79 tons per hectare, as a result of HYV adoption and improved farming practices.

“What both of these papers do is to carefully establish a causal estimate of how HYVs affect infant mortality, by only comparing children born in the same location at different points in time, when HYV use was different, and by checking that mortality before arrival of HYVs was trending similarly in places that would receive different amount of HYVs,” Bharadwaj said.

“In the absence of a randomized control trial, these econometric techniques produce the best causal estimate of a phenomenon as important as the spread of HYVs during and after the Green Revolution,” he added. These thoughts were echoed by University of California San Diego professor Gordon McCord, a co-author of the global study.

A child buys fruits and vegetables from a street cart in Varanasi, India. (Photo: Gert-Jan Stads/International Food Policy Research Institute) (CC BY-NC-ND 2.0)

Many knock-on effects

Recent studies indicate that the Green Revolution also had long-term economic impacts, which also affected health outcomes.

In a 2021 update to the 2018 paper “Two Blades of Grass: The Impact of the Green Revolution,” Douglas Gollin, Professor of Development Economics at Oxford University and co-authors found that, in 90 countries where high-yielding varieties were adopted between 1965 and 2010, food crop yields increased by 44% and that, had this adoption not occurred, GDP per capita in the developing world could be half of what it is today.

Even a 10-year delay of the Green Revolution would, in 2010, have cost 17% of GDP per capita in the developing world, with a cumulative GDP loss of $83 trillion, equivalent to one year of current global GDP.

These GDP and health impacts were boosted by a related reduction in population growth. By observing causal inference at country, regional and developing world levels, and using a novel long-term impact assessment method, the study authors detected a trend: as living standards improved for rural families, they generally wanted to invest more in their children and have fewer.

“Our estimates suggest that the world would have contained more than 200 million additional people in 2010, if the onset of the Green Revolution had been delayed for ten years,” Gollin and his co-authors stated. This lower population growth seems to have increased the relative size of the working age population, which furthered GDP growth.

Ethiopian farmers give feedback to CGIAR researchers about durum wheat varieties. (Photo: C.Fadda/Bioversity International) (CC BY-NC-ND 2.0)

A long-term investment in system transformation

It takes time from the point of an intervention to when broad health impacts can be observed in the population, the authors note. For example, although the development of modern high-yielding varieties began in the 1950s and 60s, the rate of adoption did not speed up until the 1980s, 1990s, and even into the 2000s, with evidence from sub-Saharan Africa showing that variety adoption has increased by as much in the 2000s as in the four preceding decades.

In addition, any nutrition and food security strategy which aims to reach the second Sustainable Development Goal of feeding 9 billion by 2050 must incorporate wider system transformation solutions, such as zero-emissions agriculture, affordable, diverse diets and increased land conservation.

As Gollin explained, “The Green Revolution taught us that we need to approach productivity increases, especially in staple crop yields, differently. The challenge now is more complex: we need to get the same productivity increases, with fewer inputs and resources, more environmental awareness, and in larger quantities for more people.”

In part, this means increasing productivity on existing agricultural land with positive environmental and social impacts, according to Bram Govaerts, director general of the International Maize and Wheat Improvement Center (CIMMYT).

“Breeding and sharing more productive, hardy crop varieties is as important as ever,” Govaerts said, “but also engaging farmers — in our case, smallholders — in shared research and innovation efforts to bridge yield gaps, build climate-resilient farming systems, and open access to better nutrition and market opportunities.”

Cover photo: Children eat lunch at a mobile crèche outside Delhi, India. (Photo: Atul Loke/ODI) (CC BY-NC 2.0)

Main building of CIMMYT’s maize doubled haploid facility in Kunigal, Karnataka state, India. (Photo: CIMMYT)

State-of-the-art maize doubled haploid facility inaugurated in India

Written by Steven M on December 14, 2021. Posted in News.

On December 3, 2021, the International Maize and Wheat Improvement Center (CIMMYT) and its partners inaugurated a state-of-the-art maize doubled haploid (DH) facility in Kunigal, in India’s Karnataka state. The facility was established by CIMMYT in partnership with the University of Agricultural Sciences, Bangalore (UAS Bangalore), with financial support from the CGIAR Research Program on Maize (MAIZE).

It is the first public sector facility of its kind in Asia, fulfilling a very important need for maize breeding programs in the region. The facility, operated by CIMMYT, will provide DH production services for CIMMYT’s and UAS Bangalore’s breeding programs, as well as for national agricultural research institutions and small- and medium-sized seed companies engaged in maize breeding across tropical Asia. This is expected to result in accelerated development and deployment of a greater number of elite, climate-resilient and nutritionally-enriched maize hybrids in tropical Asia.

DH technology has the potential to enhance genetic gains and breeding efficiency, especially in combination with other modern tools and technologies, such as molecular markers and genomic selection. The facility occupies 12 acres of land at the Agricultural Research Station in Kunigal, in southwestern India. It is expected to produce at least 25,000-30,000 maize DH lines per year.

For more information, and to request these services, visit CIMMYT’s Maize Doubled Haploid Technology website.

R.S. Paroda (center) cuts the ribbon to inaugurate the maize doubled haploid facility in Kunigal, Karnataka state, India. He is flanked by S. Rajendra Prasad (left), vice chancellor of UAS Bangalore and B.M. Prasanna (right), director of CIMMYT’s Global Maize Program and the CGIAR Research Program on Maize. (Photo: CIMMYT)

Fast-track maize breeding in Asia

R.S. Paroda, who is a Padma Bhushan awardee in India and the chairman of the Trust for Advancement of Agricultural Sciences (TAAS) in New Delhi, thanked CIMMYT for its role in developing the facility. “The maize DH facility will revolutionize hybrid maize programs in both the public and private sectors in Asia, enabling fast-tracked development of climate-resilient and genetically diverse maize hybrids suitable for the rainfed maize-growing areas.”

S. Rajendra Prasad, vice chancellor of UAS Bangalore, appreciated the partnership between his institution and CIMMYT. “The facility will create opportunities to modernize maize breeding programs in India, besides serving as an educational and training hub for young students at the University,” he said. Members of UAS Bangalore Board of Management also participated in the formal opening of the facility.

B.M. Prasanna, director of CIMMYT’s Global Maize Program and the CGIAR Research Program on Maize (MAIZE), spearheaded the process of establishing this important breeding facility. “Along with similar maize DH facilities in Mexico and Kenya, which respectively serve Latin America and Africa, this third facility for Asia rounds up CIMMYT’s commitment to strengthen tropical maize breeding programs across the globe,” he explained.

Bram Govaerts, CIMMYT’s director general, participated through a recorded video message.

Attending the ceremony were also 150 post-graduate students, faculty from UAS Bangalore, researchers from UAS Raichur and the Indian Institute of Maize Research, CIMMYT maize scientists, and private-sector members of the International Maize Improvement Consortium for Asia (IMIC-Asia).

R.S. Paroda, chairman of the Trust for Advancement of Agricultural Sciences (TAAS) in New Delhi, unveils the inauguration plaque for the maize doubled haploid facility in Kunigal, Karnataka state, India. (Photo: CIMMYT)

Collaboration networks

A technical workshop titled “Transforming India’s Agriculture and Modernizing Maize Breeding Programs” was held the same day. The workshop featured talks by Paroda on the role of youth in Indian agriculture, Prasanna on modernizing maize breeding and enhancing genetic gain, CIMMYT scientist Vijay Chaikam on maize doubled haploid technology, and CIMMYT breeder Sudha Nair on genomic technologies for maize improvement.

IMIC-Asia held a General Body Meeting soon after the technical workshop, at which B.S. Vivek, maize breeder at CIMMYT, introduced the framework for the third phase of IMIC-Asia. Participants included representatives of the Indian Institute of Maize Research, the All-India Coordinated Maize Improvement Program, and private seed companies with membership in the consortium. Meeting participants expressed a keen interest in utilizing the new doubled haploid facility’s services.

Irrigated wheat field. (Photo: S. Sukumaran/CIMMYT)

CIMMYT trains next generation of scientists to tackle soil-borne pathogens

Written by Alison Doody on December 14, 2021. Posted in News.

Two new students have graduated from the International Maize and Wheat Improvement Center’s (CIMMYT’s) Soil-Borne Pathogens program. The two new graduates, Khawla Mehalaine and Salah-Eddine Laasli, were supervised by CIMMYT senior scientist Abdelfattah Dababat.

He leads the Soil-Borne Pathogens program, which focuses on identifying the main soil-borne pathogens associated with cereals and developing an integrated pest management approach to combat them. The research team is particularly interested in finding novel sources of resistance against these pathogens.

Over the last two decades, CIMMYT scientists leading the Soil-Borne Pathogens program have trained tens of students which constitute the next generation of top researchers on this topic. Through this program, CIMMYT has also organized workshops and courses in North Africa, including a symposium on cereal nematodes held in Agadir, Morocco, in 2017.

Since soil-borne pathogens are exacerbated by water stress conditions, researchers have identified the Central and West Asia and North Africa regions as priority areas, due to their vulnerability to drought.

On March 1, 2021, Syngenta, in collaboration with CIMMYT and other partners, led the first One Earth Soil and Root Health Forum, an event which examined the importance of root and soil health to food security, climate resilience and livelihoods. The event also created a community for action on root and soil health.

Khawla Mehalaine celebrates graduating from her PhD. (Photo: handout)

Nematodes in Algeria

Mehalaine holds an engineering degree in agronomy and a master’s degree in plant protection from the Higher National School of Agronomy (ENSA) in Algeria. She successfully defended her PhD dissertation “Studies of cereal cyst nematodes of the genus Heterodera in the regions of northern Algeria” in June 2021, graduating from ENSA with honors.

She studied the behavior of four durum wheat varieties against cereal cyst nematodes through field surveys, molecular identification at species levels, and by evaluating the yield components of these wheat varieties.

She was promoted by ENSA professor Hammach M. and supervised by Dababat from CIMMYT, and professors Mustafa Imren and Göksel Özer from Abant Izzet Baysal University in Turkey.

“Completing my doctorate was a truly enriching experience and a challenging but rewarding journey,” Mehalaine said. “It was a collective effort and I am extremely grateful to Dr Abdelfattah Dababat for sharing his scientific skills, for his patience and support, and for all the opportunities I was given to further my research. Thanks to him, I got to know the world of nematodes. Special thanks to CIMMYT for funding the molecular study part.”

Salah-Eddine Laasli on his graduation day. (Photo: handout)

Root-lesion nematode and crown rot fungi

Laasli graduated with an International Master of Agronomic and Environmental Nematology (IMANEMA) from Ghent University, in collaboration with CIMMYT, the National Institute of Agricultural Research in Morocco and the Faculty of Agriculture at Abant Izzet Baysal University in Turkey.

His master thesis, entitled “Interaction of Root-Lesion Nematode (Pratylenchus thornei) and Crown Rot fungi (Fusarium culmorum) associated with wheat resistance under simulated field conditions,” was promoted by Wim Bert, a professor at the University of Ghent, and Dababat. The project was also supervised by Imren and Özer.

Laasli evaluated the host status of 150 spring wheat lines to both P. thornei and F. culmorum, and estimated the damage caused by the disease complex involving both pathogens at different infection scenarios. He found several lines that possessed multiple resistance to both diseases tested — which could be powerful sources of resistance for breeding program worldwide.

Cover photo: Irrigated wheat field. (Photo: S. Sukumaran/CIMMYT)

Mexico’s seed producers honor CIMMYT work to breed and spread high-yield maize

Written by Ricardo Curiel on December 7, 2021. Posted in News.

CIMMYT director general Bram Govaerts (left) presents during the AMSAC award ceremony in Playa del Carmen, Quintana Roo, Mexico. (Photo: Ricardo Curiel/CIMMYT)

The Association of Mexican Seed Producers (Asociación Mexicana de Semilleros, A.C., or AMSAC) gave the International Maize and Wheat Improvement Center (CIMMYT) its annual Cesár Garza Award for work by MasAgro (Crops for Mexico), a project that develops and spreads high-yielding, climate resilient maize and improved farming practices in Mexico. MasAgro is operated by CIMMYT and Mexico’s Secretariat of Agriculture and Rural Development (SADER).

“We unanimously selected CIMMYT for having established an effective and inclusive network of some 100 Mexican testing sites to generate and spread hybrid seed adapted to the country’s diverse agro-ecologies,” said José Luis Gastelum Careaga, president of the governing council of AMSAC, a group of more than 70 seed companies.

The award ceremony took place in Playa del Carmen, in Mexico’s Quintano Roo state, on November 4, 2021.

CIMMYT breeding research is behind the development of 70 new maize hybrids released in Mexico by dozens of small- and intermediate-scale seed companies, helping to double the maize yields of farmers who adopt them, according to Bram Govaerts, CIMMYT director general and leader of the Center’s work in MasAgro.

“AMSAC’s recognition comes at a crucial time, when public support for crop breeding, seed systems, and capacity building are more urgent than ever in the face of climate change and increased, pandemic-related food insecurity,” Govaerts said. “We’ll leverage this prestigious award and our strong partnership with AMSAC members to move toward an improved and more widespread version of MasAgro’s integrated approach for transforming Mexico’s cereal crop farming systems.”

Propelling public-private partnerships

CIMMYT director general Bram Govaerts (right) collects the Cesár Garza Award given to the MasAgro (Crops for Mexico) project. (Photo: Ricardo Curiel/CIMMYT)

Taking advantage of CIMMYT training and breeding lines, Mexican seed producers working with MasAgro have boosted their maize seed sales 33% — or 4.6% yearly — during 2011–20, Govaerts said.

This and the recent award illustrate CIMMYT’s success at sharing improved maize through powerful, decades-long partnerships with public and private entities. Small- and medium-scale seed companies have benefitted from access to CIMMYT breeding lines, technical support, business model training, and Center participation in efforts to foster competitive seed markets, according to a recently published book documenting 50 years of maize research by CIMMYT and the International Institute of Tropical Agriculture (IITA). Both centers are members of CGIAR, the world’s largest global agricultural innovation network.

“The increased number and market share of [small- and medium-scale] maize seed companies in Mexico and sub-Saharan Africa in recent years are strongly linked to the availability of stable, stress tolerant inbreds from CGIAR programs,” the book’s executive summary states. “The annual production … of over 130,000 tons of seed of CGIAR-derived stress-tolerant hybrids in Africa by [small- and medium-scale enterprises] … has addressed an important gap in seed markets not being met by multi-national companies.”

In 2015 more than a third of the area in sub-Saharan Africa was sown to new varieties and hybrids derived from CIMMYT and IITA breeding research, and adoption has accelerated since then, generating from $0.66 to 1.05 billion each year in economic benefits, according to a 2021 study.

As part of CIMMYT partnerships with large, multi-national seed companies, the Center has obtained royalty-free licenses to use proprietary technology and maize hybrids in specific areas of Africa, focusing on small-scale farmers. These partnerships, as well as similar agreements with advanced public research institutes, have fostered more widespread application for tropical maize of tools such as genomic selection, database software, and doubled haploids.

In Asia, building on collaborations from as far back as the 1960s, CIMMYT launched a maize improvement consortium in 2010 involving 25 mostly small- and medium-scale seed companies. For a modest annual fee to fund consortium management, members have access to early- and advanced-generation CIMMYT inbred lines and trait donors, as well as support services for hybrid development. This model has subsequently been copied in Mexico and in eastern and southern Africa (17 companies).

“CIMMYT science and support for maize and wheat farming systems span more than six decades and have brought impressive, well documented impacts in improved harvests and food security for those who grow and consume these globally-critical staple crops,” Govaerts said. “On behalf of the Center, I would like to recognize and thank those who fund our work, and especially the hundreds of skilled and committed partners without whom our efforts would not be possible.”

Creating a better leaf

Written by Bea Ciordia on December 6, 2021. Posted in In the media.

A new article in the New Yorker praises the cutting-edge technology CIMMYT, CGIAR and other scientists are developing to produce a second Green Revolution that doesn’t repeat the mistakes of the first, putting the experiences and challenges of farmers at the heart of it.