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Location: Mexico

Bipolaris sorokiniana, the fungus causing spot blotch in wheat. (Photo: Xinyao He and Pawan Singh/CIMMYT)

Two approaches better than one: identifying spot blotch resistance in wheat varieties

Written by Sarah Fernandes on . Posted in Publications.

Spot blotch, a major biotic stress challenging bread wheat production is caused by the fungus Bipolaris sorokiniana. In a new study, scientists from the International Maize and Wheat Improvement Center (CIMMYT) evaluate genomic and index-based selection to select for spot blotch resistance quickly and accurately in wheat lines. The former approach facilitates selecting for spot blotch resistance, and the latter for spot blotch resistance, heading and plant height.

Genomic selection

The authors leveraged genotyping data and extensive spot blotch phenotyping data from Mexico and collaborating partners in Bangladesh and India to evaluate genomic selection, which is a promising genomic breeding strategy for spot blotch resistance. Using genomic selection for selecting lines that have not been phenotyped can reduce the breeding cycle time and cost, increase the selection intensity, and subsequently increase the rate of genetic gain.

Two scenarios were tested for predicting spot blotch: fixed effects model (less than 100 molecular markers associated with spot blotch) and genomic prediction (over 7,000 markers across the wheat genome). The clear winner was genomic prediction which was on average 177.6% more accurate than the fixed effects model, as spot blotch resistance in advanced CIMMYT wheat breeding lines is controlled by many genes of small effects.

“This finding applies to other spot blotch resistant loci too, as very few of them have shown big effects, and the advantage of genomic prediction over the fixed effects model is tremendous”, confirmed Xinyao He, Wheat Pathologist and Geneticist at CIMMYT.

The authors have also evaluated genomic prediction in different populations, including breeding lines and sister lines that share one or two parents.

Spot blotch susceptible wheat lines (left) and resistant lines. (Photo: Xinyao He and Pawan Singh/CIMMYT)
Spot blotch susceptible wheat lines (left) and resistant lines. (Photo: Xinyao He and Pawan Singh/CIMMYT)

Index selection

One of the key problems faced by wheat breeders in selecting for spot blotch resistance is identifying lines that are genetically resistant to spot blotch versus those that escape and exhibit less disease by being late and tall. “The latter, unfortunately, is often the case in South Asia”, explained Pawan Singh, Head of Wheat Pathology at CIMMYT.

A potential solution to this problem is the use of selection indices that can make it easier for breeders to select individuals based on their ranking or predicted net genetic merit for multiple traits. Hence, this study reports the first successful evaluation of the linear phenotypic selection index and Eigen selection index method to simultaneously select for spot blotch resistance using the phenotype and genomic-estimated breeding values, heading and height.

This study demonstrates the prospects of integrating genomic selection and index-based selection with field based phenotypic selection for resistance in spot blotch in breeding programs.

Read the full study:
Genomic selection for spot blotch in bread wheat breeding panels, full-sibs and half-sibs and index-based selection for spot blotch, heading and plant height

Cover photo: Bipolaris sorokiniana, the fungus causing spot blotch in wheat. (Photo: Xinyao He and Pawan Singh/CIMMYT)

Researchers evaluate wheat for spot blotch at CIMMYT’s experimental station in Agua Fría, Jiutepec, Morelos state, Mexico. (Photo: Xinyao He and Pawan Singh/CIMMYT)

CIMMYT scientists identify novel genomic regions associated with spot blotch resistance

Written by Sarah Fernandes on . Posted in Publications.

Spot blotch, caused by the fungus Biopolaris sorokiniana poses a serious threat to bread wheat production in warm and humid wheat-growing regions globally, affecting more than 25 million hectares and resulting in huge yield losses.

Chemical control approaches, including seed treatment and fungicides, have provided acceptable spot blotch control. However, their use is unaffordable to resource-poor farmers and poses a hazard to health and the environment. In addition, “abiotic stresses like heat and drought that are widely prevalent in South Asia compound the problem, making varietal genetic resistance the last resort of farmers to combat this disease,” according to Pawan Singh, Head of Wheat Pathology at the International Maize and Wheat Improvement Center (CIMMYT). Therefore, one of CIMMYT’s wheat research focus areas is developing wheat varieties that carry genetic resistance to the disease.

Signs of spot blotch on wheat. (Photo: Philomin Juliana/CIMMYT)
Signs of spot blotch on wheat. (Photo: Philomin Juliana/CIMMYT)

Previously, only four spot blotch resistance genes in bread wheat had been identified. Through a new study, CIMMYT scientists have identified novel genomic regions associated with spot blotch resistance using the genome-wide association mapping approach with 6,736 advanced breeding lines from different years (2013 to 2020), evaluated at CIMMYT’s spot blotch screening platform in Agua Fría, in Mexico’s state of Morelos.

The study’s results are positive and confirmed that:

  • Many advanced CIMMYT breeding lines have moderate to high resistance to spot blotch.
  • Resistance to the disease is conferred quantitatively by several minor genomic regions that act together in an additive manner to confer resistance.
  • There is an association of the 2NS translocation from the wild species Aegilops ventricosa with spot blotch resistance.
  • There is also an association of the spot blotch favorable alleles at the 2NS translocation, and two markers on the telomeric end of chromosome 3BS with grain yield evaluated in multiple environments, implying that selection for favorable alleles at these markers could help obtain higher grain yield and spot blotch resistance.

“Considering the persistent threat of spot blotch to resource-poor farmers in South Asia, further research and breeding efforts to improve genetic resistance to the disease, identify novel sources of resistance by screening different germplasm, and selecting for genomic regions with minor effects using selection tools like genomic selection is essential,” explained Philomin Juliana, Molecular Breeder and Quantitative Geneticist at CIMMYT.

Read the full study:
Genome-Wide Association Mapping Indicates Quantitative Genetic Control of Spot Blotch Resistance in Bread Wheat and the Favorable Effects of Some Spot Blotch Loci on Grain Yield

Cover photo: Researchers evaluate wheat for spot blotch at CIMMYT’s experimental station in Agua Fría, Jiutepec, Morelos state, Mexico. (Photo: Xinyao He and Pawan Singh/CIMMYT)

(Photo: CIMMYT)

CGIAR Initiative to increase resilience, sustainability and competitiveness in Latin America and the Caribbean

Written by Sarah Fernandes on . Posted in News.

(Photo: CIMMYT)
(Photo: CIMMYT)

Este artículo también está disponible en español.

With the participation of more than 30 researchers from four CGIAR Centers located in the Americas, a planning workshop for a new CGIAR Research Initiative, AgriLAC Resiliente, was held on April 4–6, 2022. Its purpose was to define the implementation of activities to improve the livelihoods of producers in Latin America, with the support of national governments, the private sector, civil society, and CGIAR’s regional and global funders, and partners.

“This workshop is the first face-to-face planning meeting aimed at defining, in a joined-up manner and map in hand, how the teams across Centers in the region will complement each other, taking advantage of the path that each Center has taken in Latin America, but this time based on the advantage of reaching the territories not as four independent Centers, but as one CGIAR team,” says Deissy Martínez Barón, leader of the Initiative from the Alliance of Bioversity International and CIAT.

AgriLAC Resiliente is an Initiative co-designed to transform food systems in Latin America and the Caribbean. It aims to increase resilience, ecosystem services and the competitiveness of agrifood innovation systems in the region. Through this Initiative, CGIAR is committed to providing a regional structure that enhances its effectiveness and responds better to national and regional priorities, needs and demands.

This Initiative is one of a number that the CGIAR has in Latin America and the Caribbean and consists of five research components:

  1. Climate and nutrition that seeks to use collaborative innovations for climate-resilient and nutritious agrifood systems;
  2. Digital agriculture through the use of digital and inclusive tools for the creation of actionable knowledge;
  3. Competitiveness with low emissions, focused on agroecosystems, landscapes and value chains, low in sustainable emissions;
  4. Innovation and scaling with the Innova-Hubs network for agrifood innovations and their scaling up;
  5. Science for timely decision making and the establishment of policies, institutions and investments in resilient, competitive and low-emission agrifood systems.

The regional character of these CGIAR Initiatives and of the teams of researchers who make them a reality in the territories with the producers, was prominent in the minds of the leadership that also participated in this workshop. Martin Kropff, Global Director, Resilient Agrifood Systems, CGIAR; Joaquín Lozano, Regional Director, Latin America and the Caribbean, CGIAR; Óscar Ortiz, Acting Director General of the International Potato Center; Jesús Quintana, Manager for the Americas of the Alliance of Bioversity International and CIAT; and Bram Govaerts, Director General of the International Maize and Wheat Improvement Center (CIMMYT), all stated the importance of CGIAR being central to every discussion in which the teams are co-constructing a greater consensus on what AgriLAC Resliente is, what it wants to achieve, the approach it will use, and the goals it aims to achieve through synergies among its five components.

Acting as an integrated organization is also an opportunity for CGIAR to leverage co-developed solutions and solve local challenges in the global South related to climate change and agrifood systems transformation. “Building the new CGIAR involves tons of collaboration and coordination. In this AgriLAC Resiliente workshop, we have had a dialogue full of energy focused on achieving real impact” highlighted Bram Govaerts. He continued, “this is an occasion to strengthen teamwork around this CGIAR Initiative in which the Integrated Agrifood System Initiative approach will be applied in the Latin American region, which is a very interconnected region” he pointed out.

One of the main results of this workshop is an opportunity to carry out the integration of the CGIAR teams in the implementation of the AgriLAC Resiliente Initiative, with applied science and the decisive role of the partners at each point of the region, as mechanisms for change.

In 2022, the research teams will begin to lay the groundwork for implementing the Initiative’s integrative approach to strengthen the innovations to be co-developed with partners and collaborators in the Latin American region, that encompass the interconnected nature of the global South.

Learn more about the Initiative:
AgriLAC Resiliente: Resilient Agrifood Innovation Systems in Latin America and the Caribbean

This article, authored by the AgriLAC Resiliente team, was originally published on CGIAR.org.

Inspired by ‘enemy of world hunger’ Rajaram, national and global institutions and research centers strengthen their commitment to food security

Written by Leslie Domínguez on . Posted in Press releases.

Representatives of the Government of Mexico, the Embassy of India, the National Agricultural Council, the CGIAR and the International Maize and Wheat Improvement Center (CIMMYT) at the Sanjaya Rajaram Experimental Station in Toluca, State of Mexico. (Photo: Alfonso Arredondo Cortés/CIMMYT)
Representatives of the Government of Mexico, the Embassy of India, the National Agricultural Council, the CGIAR and the International Maize and Wheat Improvement Center (CIMMYT) at the Sanjaya Rajaram Experimental Station in Toluca, State of Mexico. (Photo: Alfonso Cortés Arredondo/CIMMYT)

Collaboration between food security institutions and research organizations has contributed to improvements in global grain production that have benefitted millions of farmers around the world – and must continue today. This message was highlighted during a ceremony hosted by the International Maize and Wheat Improvement Center (CIMMYT) to recognize the legacy of World Food Laureate and former CIMMYT Wheat Program Director Sanjaya Rajaram.

The ceremony, held at the CIMMYT Experimental Station in Toluca, State of Mexico, officially dedicated the Station in honor of Sanjaya Rajaram, honoring his memory as an “enemy of world hunger” and one of the scientists who has most contributed to global food security.

The Indian-born naturalized Mexican researcher, who was the third person from CIMMYT to receive the World Food Prize, was recognized for having developed more than 480 high-yielding and adaptable wheat varieties that have been planted on approximately 58 million hectares around the world.

“For this impressive achievement, which seems easy to summarize in one sentence, Raj became a giant of the ‘right to food’ and one of the fiercest enemies of hunger in the world,” said CIMMYT Director General Bram Govaerts.

“Building on the work of Dr. Norman Borlaug, Dr. Sanjaya Rajaram was a driving force in making CIMMYT into the extraordinary institution that it is today,” said Claudia Sadoff, Managing Director, Research Delivery and Impact of CGIAR, a global research partnership of which CIMMYT is a member.

“The challenges of today compel us to redouble our efforts to breed more resilient and more nutritious crops, as Dr. Sanjaya Rajaram did, Sadoff added. “This ceremony reminds us that Dr Rajaram’s legacy and the ongoing efforts of CIMMYT and CGIAR scientists must answer that.”

Awards for international cooperation in food security

At the event, CIMMYT presented awards to the Secretary of Foreign Affairs of Mexico, Marcelo Ebrard Casaubón, and of Secretary of Agriculture and Rural Development (SADER), Víctor Villalobos Arámbula, for their promotion of food security and social inclusion in Mexico and Latin America.

The Secretary of Foreign Affairs of Mexico expressed his gratitude for the Norman E. Borlaug and reaffirmed his commitment to “work in the international arena as we have done, but now we will have to work harder, with greater intensity.”

Bram Govaerts, Director General of CIMMYT, presents the Norman E. Borlaug award to Marcelo Ebrard Casaubón, Secretary of Foreign Affairs of Mexico. (Photo: Alfonso Arredondo Cortés/CIMMYT)
Bram Govaerts, Director General of CIMMYT, presents the Norman E. Borlaug award to Marcelo Ebrard Casaubón, Secretary of Foreign Affairs of Mexico. (Photo: Alfonso Cortés Arredondo/CIMMYT)

The Secretary of Agriculture and Rural Development of Mexico, Víctor Villalobos Arámbula, emphasized that Mexico, Latin America and CIMMYT play an important role in the struggle to improve the conditions of small-scale farmers and the resilience of agri-food systems, noting that more than 300,000 farmers grow maize, wheat and associated crops on over one million hectares in Mexico using sustainable technologies from the CIMMYT-led MasAgro project, now called Crops for Mexico.

“Throughout this administration,” he said, “we have designed, implemented and refined, through collaboration between SADER and CIMMYT, sustainable development strategies with a systemic approach that facilitates the participation of producers in more integrated and efficient value chains both in Mexico and in other countries.”

India’s Ambassador to Mexico, Pankaj Sharma, highlighted that his nation owes a large part of its Green Revolution to the “Sonora” wheat variety, which was developed in Mexico, a country that is considered one of the cradles of agriculture at a global level, with arable land accounting for 15 percent of the total land dedicated to agriculture in the world.

Ravi Singh, Distinguished Scientist and Head of Global Wheat Breeding at CIMMYT, receives an award. (Photo: Alfonso Arredondo Cortés/CIMMYT)
Ravi Singh, Distinguished Scientist and Head of Global Wheat Breeding at CIMMYT, receives an award. (Photo: Alfonso Cortés Arredondo/CIMMYT)

Report on the results of the Crops for Mexico initiative

CIMMYT’s Wheat Germplasm Bank Curator and Genotyping Specialist Carolina Sansaloni presented highlighted impacts from Crops for Mexico, the main cooperative project between the Government of Mexico — through the Secretary of Agriculture and Rural Development — and CIMMYT, and a flagship initiative in the application of technologies in sustainable agriculture.

The project has been in operation for more than a decade in 28 states in Mexico, with the collaboration of more than 100 national and international partners and private and public sector agencies in 12 regions, offering research infrastructure and training development for sustainable agronomic practices, she explained.

She reported that the results of 40 platforms, 500 demonstration modules and two thousand extension areas have an impact on more than one million hectares and benefit 300,000 maize, wheat and bean producers, with the use of high-yield varieties.

Rosalinda Muñoz Tafolla, a maize farmer in Amacuzac, in the Mexican state of Morelos, explained that her drive to produce healthy food led her to participate in Crops for Mexico, where CIMMYT’s support and advice has enabled her to dramatically increase her farm’s productivity while protecting the soil and conserving natural resources.

She explained that with the conservation agriculture system she learned to improve soil conditions, planted a new maize variety, and was supported in marketing her harvest at a good price and selling 2,000 maize ears (mostly weighing 200 grams each).

CIMMYT’s Wheat Germplasm Bank Curator and Genotyping Specialist Carolina Sansaloni at the Crops for Mexico presentation. (Photo: Alfonso Arredondo Cortés/CIMMYT)
CIMMYT’s Wheat Germplasm Bank Curator and Genotyping Specialist Carolina Sansaloni at the Crops for Mexico presentation. (Photo: Alfonso Cortés Arredondo/CIMMYT)
Día del Agricultor 2022 Sonora

CIMMYT scientist recognized at the Day of the Farmer in Sonora

Written by Bea Ciordia on . Posted in News.

Día del Agricultor 2022 Sonora

On the 67th Edition of the Day of the Farmer in Mexico’s Yaqui Valley, Jesús Larraguibele Artola, president of the Agricultural Research and Experimentation Board of the State of Sonora (PIEAES), publicly recognized the work and trajectory of Ravi Singh, Distinguished Scientist and Head of Global Wheat Improvement at the International Maize and Wheat Improvement Center (CIMMYT).

An Indian national, Singh first arrived to CIMMYT’s Experimental Station in Ciudad Obregón, Sonora, in 1983, and has since developed 680 wheat varieties in 48 countries, including the Cirno and Borlaug varieties, grown in 98% of the Yaqui Valley’s wheat fields.

At the event, Larraguibele Artola also highlighted the importance of the legacy of Norman Borlaug, father of the Green Revolution, who saved the lives of billions of people from starvation with his improved wheat varieties. He also recalled how the first Day of the Farmer was organized by Borlaug back in 1948, when the American agronomist presented his first rust-resistant wheat varieties to farmers in the region. Over time, the event became a unique place for researchers and scientists in Sonora to increase collaboration with farmers and producers in the region and share their latest scientific advances.

Acknowledging the key role of new technologies and wheat varieties in tackling current and future agricultural challenges, Fátima Yolanda Rodríguez Mendoza, Secretary of Agriculture, Farming, Hydraulic Resources, Fishing and Aquaculture (SAGRHPA) of Sonora, reiterated the commitment of the governor, Alfonso Durazo Montaño, to invest in agricultural research to boost production and drive the growth of the region’s agrifood sector.

“We’ll continue to invest in research and innovation and support scientists, who put their knowledge at the service of the people of Sonora”, she promised.

Read the original article: Día del Agricultor: permanente cambio y continua investigación

CIMMYT and a farmer

Written by Sarah McLaughlin on . Posted in Blogs.

Guillermo Breton with Karim Ammar at CIMMYT Toluca (Credit: Global Farmer Network)

Global food prices were already increasing when the world’s wheat supply came under extra pressure, due to Russia’s war on Ukraine. We don’t know whether the farmers who have made Ukraine the fifth-largest exporter of wheat will produce anything in 2022.

Food security is bound to fall, with the greatest impact to be felt by those most vulnerable first. Ukrainians are bearing the worst of it, of course, but the fallout from Vladimir Putin’s cruelty will affect us all.

The problem would be much worse if a remarkable group of scientists had not dedicated themselves in the last century to the improvement of agriculture, in work that continues today and promises to make the future a little more hopeful.

My family witnessed the work of these scientists up close. Our farm is in the state of Tlaxcala, in the highlands east of Mexico City. We grow corn, barley, sunflower, and triticale, which is a hybrid of wheat and rye.

During the 1950s and 1960s, Norman Borlaug brought teams of agronomists to our region as he worked to improve wheat’s germplasm. I wasn’t born at that time, so I couldn’t meet Dr. Borlaug at our farm, but he came many times across several summers. I’ve heard the stories: As my father worked with Borlaug in the fields, growing the seeds that would help Borlaug produce a better kind of wheat, my mother made sure that our house was in order so that Borlaug and his companions had proper accommodations.

Today, of course, Dr. Borlaug is a legend: In 1970, he won the Nobel Peace Prize. Hailed as “the father of the Green Revolution,” he arguably saved hundreds of millions of lives through science-based improvements to the wheat germplasm.

The result is that wheat farmers around the world grow a lot stronger, healthier wheat today. No matter where we live, we’re better able to deal with problems of scarcity.

Drought, disease, and war still possess the horrible potential to inflict suffering, but we’re in fact much more capable of dealing with them because of what Dr. Borlaug and his fellow researchers accomplished decades ago.

Their work continues today at the International Wheat and Maize Improvement Center, also known as CIMMYT (in its Spanish acronym). Founded by the Mexican government and the Rockefeller Foundation, this non-profit group devoted itself to improving the productivity of Mexican farmers. It became the institutional home of Borlaug, whose work was so successful it transformed agriculture not just in Mexico but around the world.

Mexican farmers gained from its work, and so did wheat farmers in India, Pakistan, and elsewhere. In fact, everybody wins: The world has much more wheat today because of Borlaug and CIMMYT.

I’m a special beneficiary, and not just because of my family’s historical connection to CIMMYT. I live within driving distance of CIMMYT’s headquarters, which is a sanctuary of knowledge. It enjoys an amazing history, but also holds a promising future: It remains a resource for improvements in agriculture.

As an agronomist, I always believed that science is a status improver.  Because of CIMMYT, I’m a better farmer today than I was just a few years ago, and I’ll be even better in the years ahead.

CIMMYT’s Karim Ammar taught me about triticale, which is producing great results on my farm. As science has progressed and with the conjunction of science and technology, farmers are able to improve productivity and have better soils. Today, Bram Govaerts, who is now CIMMYT’s Director General, introduced me to the value of no-till, which is making my farm both more productive and more sustainable.

Dr. Borlaug’s dying words were “take it to the farmers.” That’s exactly what his successors at CIMMYT are doing. They’re adapting cutting-edge technologies to agriculture. The best part, though, is that they don’t keep their knowledge locked up in labs. They share what they learn with farmers like me, who can apply them to the practical work of food production.

Agriculture will face plenty of tests in the 21st century. The world’s population continues to grow, but our arable land doesn’t increase with it. That means we must continue to produce more food from the farms we already have. At the same time, we must contend with the threat of climate change and make our methods more sustainable, which means preserving biodiversity, conserving water, and kidnapping carbon.

Amid these challenges, Russia’s invasion of Ukraine, a globally important farming nation, is adding stress to the challenge of global food security. As we watch a country and its innocent people suffer, we aren’t thinking much about wheat germplasms—but we should be grateful that CIMMYT’s agronomists have made us all a little more resilient.

Read the original article: CIMMYT and a farmer

Farmers in Mexico attend a workshop organized by CIMMYT to build their capacity in seed production. (Photo: X. Fonseca/CIMMYT)

Supporting the growth of local maize seed industries: Lessons from Mexico

Written by Steven M on . Posted in Features.

Over the past several decades, maize breeders have made considerable strides in the development and deployment of new hybrids. These offer higher yields compared to older varieties and reduce the risks farmers face from the vagaries of a changing climate and emerging pest and disease threats. But, for small-scale farmers to adopt new, improved climate-resilient and stress-tolerant maize hybrids at scale, they must be first available, accessible and their benefits need to be widely understood and appreciated. This is where vibrant national seed industries potentially play an important role.

Prior to the 1990s, government agencies tended to play the lead role in hybrid production and distribution. Since then, expectations are that the private sector — in particular locally owned small-scale seed enterprises — produce maize hybrids and distribute them to farmers. When successful, local seed industries are able to produce quality new hybrids and effectively market them to farmers, such that newer hybrids replace older ones in agrodealer stores in relatively short periods of time. If small seed enterprises lack capacities or incentives to aggressively market new hybrids, then the gains made by breeding will not be realized in farmers’ fields. By monitoring seed sales, breeders at CIMMYT and elsewhere, as well as seed business owners, gain insights into smallholders’ preferences and demands.

A recent publication in Food Security assesses the capacities of 22 small and medium-sized seed enterprises in Mexico to produce and market new maize hybrids. The study draws on the experience of the MasAgro project, a decade-long development whereby the International Maize and Wheat Improvement Center (CIMMYT), in partnership with Mexico’s Department of Agriculture and Rural Development (SADER), engaged with dozens of locally owned seed businesses to expand their portfolio of maize hybrids.

The authors, led by CIMMYT senior economist Jason Donovan, highlight the critical role the MasAgro project played in reinvigorating the portfolios of maize seeds produced by small and medium-sized enterprises. MasAgro “filled a gap that had long existed in publicly supported breeding programs” by providing easy access to new cultivars, available to local seed companies without royalties or branding conditions, and without the need for seed certification. The enterprises, in turn, showed a remarkably high capacity to take up new seed technology, launching 129 commercial products between 2013 and 2017.

“Without doubt the MasAgro project can be considered a success in terms of its ability to get new maize germplasm into the product portfolios of small seed companies throughout Mexico,” Donovan said.

The authors also delve into the challenges these maize enterprises faced as they looked to scale the new technologies in a competitive market that has long been dominated by multinational seed enterprises. They observed a lack of access to physical capital, which in turn evidenced a lack of financial capital or access to credit, as well as limited marketing know-how and capacity to integrate marketing innovations into their operations. While most maize enterprises identified the need to expand sales of new commercial products, “signs of innovation in seed marketing were limited” and most of them relied heavily on sales to local and state governments.

According to Donovan, “The MasAgro experience also shows that a strong focus on the demand side of formal seed systems is needed if breeding programs are to achieve greater impact in less time. This implies more attention to how farmers decide on which seed to purchase and how seed companies and seed retailers market seed to farmers. It also implies strong coordination between public sector to make building the local seed industry a national imperative.”

Beyond the Mexican context, the paper’s findings may be of particular interest to development organizations looking to supply local seed industries facing strong competition from regional and multinational companies. One example is the effort to support small seed businesses in Nepal, which face strong competition from larger Indian companies with long histories of engagement in Nepalese seed markets. There are also important lessons for policymakers in eastern and southern Africa, where strict controls over seed release and certification potentially lead to higher production costs and slower rates of introduction of new products by local maize seed companies.

Read the full article:
Capacities of local maize seed enterprises in Mexico: Implications for seed systems development

This paper is complemented by two CIMMYT-led publications in a special issue of Outlook on Agriculture that highlights experiences in sub-Saharan Africa. That special issue grew out of the CGIAR Community of Excellence for Seed Systems Development where CIMMYT led the discussion on seed value chains and private sector linkages.

Cover image: Farmers in Mexico attend a workshop organized by CIMMYT to build their capacity in seed production. (Photo: X. Fonseca/CIMMYT)

Luis Castillo Villaseñor

Written by Leslie Domínguez on . Posted in Uncategorized.

Luis Castillo Villaseñor is a Research and Post-Harvest Platforms Coordinator working with CIMMYT at the Pacifico Sur, Golfo Centro Hub.

He works in the Mexican states of Oaxaca and Veracruz where he provides technical accompaniment on conservation agriculture and post-harvest based trials. Together with local collaborators and researchers, he develops sustainable crop management practices and post-harvest technologies.

Castillo Villaseñor is a philosopher and certified technician in sustainable agriculture with more than 10 years of work experience, this allows him to see the issues in each region in an integral way. He integrates and communicates information to improve production systems for farmers, technicians and researchers working in the Mexican agricultural sector.

Carlos Muñoz

Written by Leslie Domínguez on . Posted in Uncategorized.

Carlos Muñoz is an Research Associate – Maize Phytopathology working with CIMMYT’s Maize program.

Muñoz works on the phenotyping of the main diseases and pests that affect maize crops in Mexico with high natural incidence, and develops protocols for artificial inoculations that help identify and develop resistant maize through genetic and molecular improvement.

He is currently working on the validation of agronomic, biological and chemical management tactics to reduce mycotoxin contamination and on advising producers and technicians on the correct diagnosis of the causal agent of biotic or abiotic stresses.

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

Written by Ricardo Curiel on . 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)
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)
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.”

Bringing wild wheat’s untapped diversity into elite lines

Written by Rodrigo Ordóñez on . Posted in Features.

A collaboration involving 15 international institutes across eight countries has optimized efforts to introduce beneficial traits from wild wheat accessions in genebanks into existing wheat varieties.

The findings, published in Nature Food, extend many potential benefits to national breeding programs, including improved wheat varieties better equipped to thrive in changing environmental conditions. This research was led by Sukhwinder Singh of the International Maize and Wheat Improvement Center (CIMMYT) as part of the Seeds of Discovery project.

Since the advent of modern crop improvement practices, there has been a bottleneck of genetic diversity, because many national wheat breeding programs use the same varieties in their crossing program as their “elite” source. This practice decreases genetic diversity, putting more areas of wheat at risk to pathogens and environmental stressors, now being exacerbated by a changing climate. As the global population grows, shocks to the world’s wheat supply result in more widespread dire consequences.

The research team hypothesized that many wheat accessions in genebanks — groups of related plant material from a single species collected at one time from a specific location — feature useful traits for national breeding programs to employ in their efforts to diversify their breeding programs.

“Genebanks hold many diverse accessions of wheat landraces and wild species with beneficial traits, but until recently the entire scope of diversity has never been explored and thousands of accessions have been sitting on the shelves. Our research targets beneficial traits in these varieties through genome mapping and then we can deliver them to breeding programs around the world,” Singh said.

Currently adopted approaches to introduce external beneficial genes into breeding programs’ elite cultivars take a substantial amount of time and money. “Breeding wheat from a national perspective is a race against pathogens and other abiotic threats,” said Deepmala Sehgal, co-author and wheat geneticist in the Global Wheat program at CIMMYT. “Any decrease in the time to test and release a variety has a huge positive impact on breeding programs.”

Deepmala Sehgal shows LTP lines currently being used in CIMMYT trait pipelines at the experimental station in Toluca, Mexico, for introgression of novel exotic-specific alleles into newly developed lines. (Photo: CIMMYT)
Deepmala Sehgal shows LTP lines currently being used in CIMMYT trait pipelines at the experimental station in Toluca, Mexico, for introgression of novel exotic-specific alleles into newly developed lines. (Photo: CIMMYT)

Taking into genetic biodiversity

The findings build from research undertaken through the Seeds of Discovery project, which genetically characterized nearly 80,000 samples of wheat from the seed banks of CIMMYT and the International Center for Agricultural Research in the Dry Areas (ICARDA).

First, the team undertook a large meta-survey of genetic resources from wild wheat varieties held in genebanks to create a catalog of improved traits.

“Our genetic mapping,” Singh said, “identifies beneficial traits so breeding programs don’t have to go looking through the proverbial needle in the haystack. Because of the collaborative effort of the research team, we could examine a far greater number of genomes than a single breeding program could.”

Next, the team developed a strategic three-way crossing method among 366 genebank accessions and the best historical elite varieties to reduce the time between the original introduction and deployment of an improved variety.

Sukhwinder Singh (second from left) selects best performing pre-breeding lines in India. (Photo: CIMMYT)
Sukhwinder Singh (second from left) selects best performing pre-breeding lines in India. (Photo: CIMMYT)

Worldwide impact

National breeding programs can use the diverse array of germplasm for making new crosses or can evaluate the germplasm in yield trials in their own environments.

The diverse new germplasm is being tested in major wheat producing areas, including India, Kenya, Mexico and Pakistan. In Mexico, many of the lines showed increased resistance to abiotic stresses; many lines tested in Pakistan exhibited increased disease resistance; and in India, many tested lines are now part of the national cultivar release system. Overall, national breeding programs have adopted 95 lines for their targeted breeding programs and seven lines are currently undergoing varietal trials.

“This is the first effort of its kind where large-scale pre-breeding efforts have not only enhanced the understanding of exotic genome footprints in bread wheat but also provided practical solutions to breeders,” Sehgal said. “This work has also delivered pre-breeding lines to trait pipelines within national breeding programs.”

Currently, many of these lines are being used in trait pipelines at CIMMYT to introduce these novel genomic regions into advanced elite lines. Researchers are collaborating with physiologists in CIMMYT’s global wheat program to dissect any underlying physiological mechanisms associated with the research team’s findings.

“Our investigation is a major leap forward in bringing genebank variation to the national breeding programs,” Singh explained. “Most significantly, this study sheds light on the importance of international collaborations to bring out successful products and new methods and knowledge to identify useful contributions of exotic in elite lines.”

Read the full article:
Direct introgression of untapped diversity into elite wheat lines

Cover photo: A researcher holds a plant of Aegilops neglecta, a wild wheat relative. Approximately every 20 years, CIMMYT regenerates wheat wild relatives in greenhouses, to have enough healthy and viable seed for distribution when necessary. (Photo: Rocío Quiroz/CIMMYT)

CIMMYT senior scientist and cropping systems agronomist Nele Verhulst (left) shows the benefits of conservation agriculture to visitors at CIMMYT’s experimental station in Texcoco, Mexico. (Photo: Francisco Alarcón/CIMMYT)

World-class laboratories and research fields to the service of Mexico and the world

Written by Rodrigo Ordóñez on . Posted in News.

CIMMYT senior scientist and cropping systems agronomist Nele Verhulst (left) shows the benefits of conservation agriculture to visitors at CIMMYT’s experimental station in Texcoco, Mexico. (Photo: Francisco Alarcón/CIMMYT)
CIMMYT senior scientist and cropping systems agronomist Nele Verhulst (left) shows the benefits of conservation agriculture to visitors at CIMMYT’s experimental station in Texcoco, Mexico. (Photo: Francisco Alarcón/CIMMYT)

High-level representatives of the Carlos Slim Foundation and Mexico’s National Agriculture Council (CNA) visited the global headquarters of the International Maize and Wheat Improvement Center (CIMMYT) outside Mexico City on October 18, 2021, to learn about innovative research to promote sustainable production systems in Mexico and the world.

Carlos Slim Foundation and CNA representatives agreed that public and private sectors, civil society and international research organizations like CIMMYT must collaborate to address the challenges related to climate change, forced migration and rural insecurity.

“It is necessary to give more visibility to and make use of CIMMYT’s world-class laboratories and research fields, to enhance their impact on sustainable development and the 2030 agenda,” said Juan Cortina Gallardo, president of the CNA.

The tour included a visit to CIMMYT’s germplasm bank, where the world’s largest collections of maize and wheat biodiversity are conserved. Visitors also toured the laboratories, greenhouses and experimental fields where cutting-edge science is applied to improve yield potential, adaptability to climate change, resistance to pests and diseases, and nutritional and processing quality of maize and wheat.

Representatives of the Carlos Slim Foundation and Mexico's National Agriculture Council (CNA) stand for a group photo with CIMMYT representatives at the organization’s global headquarters in Texcoco, Mexico. (Photo: Francisco Alarcón/CIMMYT)
Representatives of the Carlos Slim Foundation and Mexico’s National Agriculture Council (CNA) stand for a group photo with CIMMYT representatives at the organization’s global headquarters in Texcoco, Mexico. (Photo: Francisco Alarcón/CIMMYT)

From Mexico to the world

“CIMMYT implements Crops for Mexico, a research and capacity building project building on the successes and lessons learned from MasAgro, where smallholder farmers increase their productivity to expand their market opportunities and can, for example, join the supply chain of large companies as providers and contribute to social development of Mexican farming,” Cortina Gallardo said.

CIMMYT carries out more than 150 integrated development projects related to maize and wheat systems in 50 countries. They are all supported by first-class research infrastructure in CIMMYT’s global headquarters, funded by the Carlos Slim Foundation.

“Our goal is to put CIMMYT’s laboratories, greenhouses and experimental fields at the service of farmers and both public and private sectors as needed,” said Bram Govaerts, director general of CIMMYT. “Accelerating the development of sustainable agricultural practices and more nutritious and resilient varieties contributes to transforming agricultural systems around the world, strengthening global food security and reducing the impact of agriculture on climate change.”

Abel Saldivia Tejeda

Written by Bea Ciordia on . Posted in Uncategorized.

Abel Saldivia Tejeda is an agronomist at CIMMYT Headquarters in El Batán, Mexico, where  he oversees field experimentation for conservation agriculture-based trials and testing of post-harvest storage technologies.

Saldivia also works with local research partners at different sites in north and central Mexico for the development of sustainable crop management practices and post-harvest technologies.