Skip to main content

New Publications: Research sheds light on climate and yield risk in South Asia

Want to learn more about CIMMYT's activities in Pakistan? Check out our news feed here. Photo: CIMMYT
Want to learn more about CIMMYT’s activities in Pakistan? Check out our news feed here. Photo: CIMMYT

EL BATAN, Mexico (CIMMYT) — A new paper by scientists from the International Maize and Wheat Improvement Center (CIMMYT) highlight important risks to farmers’ yields in Pakistan due to climate change and call for current climate adaptation policies across South Asia to be revised in response.

Rice and wheat are the principal calorie sources for over a billion people in South Asia. Both of these crops are extremely sensitive to climate and agronomic management conditions under which they are grown.

Which is why climate change – projected to increase heat stress and variability across the region – is a huge threat to farmers growing these crops.

And while the influence of climatic conditions on crop growth have been widely studied, empirical evidence of the link between climate variability and yield risk in farmers’ fields is comparatively scarce.

Using data from 240 farm households, the paper “Climate variability and yield risk in South Asia’s rice–wheat systems: emerging evidence from Pakistan” responds to this gap and isolates the effects of agronomic management from climatic variability on rice and wheat yield risks in eight of Pakistan’s twelve agroecological zones. The authors’ results highlight important risks to farmers’ ability to obtain reliable yield levels for both crops, finding season-long and terminal heat stress have a negative effect on rice and wheat yields, with heat being particularly damaging to wheat.

The study also finds farmers have limited capacity to adapt to respond to climactic changes within a crop season, concluding that current climate change adaptation policies must be reviewed to increase resilience for Pakistan’s and South Asia’s cereal farmers, suggesting avenues for investment in improved crop research and development programs.

Read more about this study and more recent publications from CIMMYT researchers, below:

  1. A direct comparison of remote sensing approaches for high-throughput phenotyping in plant breeding. 2016. Tattaris, M.; Reynolds, M.P.; Chapman, S. Frontiers in Plant Science 7: 113
  2. Baseline simulation for global wheat production with CIMMYT mega-environment specific cultivars. 2016. Gbegbelegbe, S.D.; Cammarano, D.; Asseng, S.; Robertson, R.; Chung, U.; Adam, M.; Abdalla, O.; Payne, T.S.; Reynolds, M.P.; Sonder, K.; Shiferaw, B.; Nelson, G. Field Crops Research. Online First.
  3. Climate variability and yield risk in South Asia’s rice–wheat systems: emerging evidence from Pakistan. 2016. Muhammad Arshad; Amjath-Babu, T.S.; Krupnik, T.J.; Aravindakshan, S.; Abbas, A.; Kachele, H.; Muller, K. Paddy Water Environment. Online First.
  4. Genome wide association mapping of stripe rust resistance in Afghan wheat landraces. 2016. Manickavelu, A.; Joukhadar, R.; Jighly, A.; Caixia Lan; Huerta-Espino, J.; Ahmad Shah Stanikzai; Kilian, A.; Singh, R.P.; Ban, T. Plant Science 252: 222-229.

“Invisible women” hold key to food security – ex-WFP chief Catherine Bertini

Catherine Bertini. IFPRI/Jake Naughton

EL BATAN, Mexico (CIMMYT) – In developing countries, 43 percent of income-earning farmworkers are women – a percentage that is even higher if unwaged farm work is included, according to the U.N. Food and Agriculture Organization (FAO).

Despite the large numbers of women working on farms, their voices are not heard by international development policymakers and funders, which handicaps global efforts to achieve food security, said the 2003 World Food Prize laureate and former head of the U.N. World Food Programme (WFP).

“When policymakers or grant-makers look at community needs, the dearth of women in leadership or spokesperson roles, prevents them from learning what is really required to best support the community,” Catherine Bertini wrote in a special issue of Daedalus, the journal of the American Academy of Arts and Sciences.

“Feedback comes from men, and it predictably centers on what men need,” she added, pointing out that the role of women in the fight for food security is vital not only because they are farmers, but also because they typically oversee nutrition and meal management in the household.

Women and men do not have the same access to agricultural inputs – to seeds and fertilizer, land and extension services, and FAO estimates that if they did, women’s agricultural production would increase up to 20 percent, said Bertini, who will speak at a conference on September 29 in Mexico City to mark the 50th anniversary of the International Maize and Wheat Improvement Center (CIMMYT).

Additionally, financial resources controlled by women are more likely to be spent on household needs in contrast to financial resources controlled by men, which are more likely to be used outside the household, Bertini said.

In her essay titled “Invisible Women,” Bertini, currently a professor at Syracuse University, cites a gender-specific mix-up with hoes as an example of how things can go terribly wrong when women farmers are not consulted about their needs.

During her tenure at WFP, Bertini visited a rural area in Angola, which was recovering from more than a quarter century of civil war. Farmers said they could not work the fields because they had no farm implements, although there were about a hundred hoes leaning against a nearby fence.

It turned out that the non-governmental organization (NGO) that ordered them was unaware that hoes in Angola were gender differentiated.

“The NGO had not talked to the women,” Bertini said. “In that region of Angola, women were the only people who tilled the fields, but they did not use the long-poled hoes. Women’s hoes, it turned out, had shorter wooden handles and shovel-like spades at the end.”

Women squat to use their hoes because they usually have a baby strapped to their back and it is less cumbersome and causes less stress on the back, unlike the men who stand.

“For me, this story became a metaphor for the importance of always speaking with the people who know what their needs are, and that those who do not specifically seek out women in order to understand their needs may waste their entire contribution to the good they seek to accomplish,” Bertini said.

“It also reminds me that women are generally not in community leadership roles and are too often politically invisible.”

She says for women to be seen and heard, and for society to benefit from their knowledge, changes must occur, including:

  • Educating girls
  • Starting research with women’s needs in mind
  • Enhancing women’s health support
  • Supporting breastfeeding
  • Improving women’s literacy
  • Creating agricultural extension programs that include women
  • Expanding micro-bank loans and insurance
  • Creating legal rights for women to own and inherit land
  • Considering societal gender roles in all development thinking

CIMMYT DG’s visit to CIMMYT-Asia, Hyderabad, highlights the importance of collaboration

Observing the rhizotronics facility. Photo: CIMMYT
Touring the rhizotronics facility. Photo: CIMMYT

HYDERABAD, India (CIMMYT) – The International Maize and Wheat Improvement Center’s (CIMMYT) Director General Martin Kropff visited the CIMMYT office at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India, on 26 August 2016, along with a delegation that included Mrs. Nynke Nammensma Kropff, John Snape (Chair, CIMMYT Board of Trustees), Nicole Birrell (CIMMYT Board Member), Denis Huneault (Director of Business Services), Pramod Aggarwal (Regional Program Leader, CCAFS), Michelle Guertin (Senior Manager, Project Management), Jean-Flavien Le Besque (Global Human Resources Manager) and Arun Joshi (Country Representative).

ICRISAT Director General David Bergvinson welcomed the delegation and emphasized the continuing need for system-level synchronization among CGIAR centers. An introductory presentation highlighted the activities of the CIMMYT-Hyderabad team, ranging from upstream marker discovery and phenotyping and informatics tool development to mid-stream adaptive research to downstream hybrid deployment through seed partners and engagement  with farmers through on-farm trials and demonstrations.

Observing water logging in maize. Photo: CIMMYT
Observing water logging in maize. Photo: CIMMYT

The key to this success is strong partnerships with national partners, the seed industry and other CGIAR centers. The ensuing discussion centered around the need for a CIMMYT center of excellence (or CIMMYT Academy) in the region as a way to systematize, strengthen and sustain partnerships.  The need for “out of the box” solutions to drive CIMMYT’s agenda through cost recovery models of research expenses, within the “not-for-profit” mandate of the CG, also stimulated a lot of discussion.

Martin Kropff’s presentation highlighted the relevance of CIMMYT’s work, the new “ONE CIMMYT” strategy and the interesting feedback from CIMMYT’s recent staff survey. Kropff also had an exclusive meeting with the female staff of CIMMYT-Hyderabad. The delegation was given a tour of CIMMYT facilities and fields, and had the opportunity to interact with national staff. This intense and important visit concluded with a meeting with ICRISAT’s Management Group.

 

 

CIMMYT Delegation in Hyderabad, India, 26 August 2016. Photo: CIMMYT
CIMMYT Delegation in Hyderabad, India, 26 August 2016. Photo: CIMMYT

Beating the odds: Indigenous female scientist gets Mexico’s National Youth Award

Tania Martínez, PhD fellow with CIMMYT, holding her national youth award for outstanding performance in academic achievement. Photo courtesy of Tania Martínez.
Martínez displays her award at the Autonomous University of Chapingo. Photo courtesy of Tania Martínez.

EL BATAN, Mexico (CIMMYT) — Tania Martínez, Ph.D. fellow with the International Maize and Wheat Improvement Center (CIMMYT), received the Mexican National Youth Award for her outstanding performance in academic achievement from Mexican President Enrique Peña Nieto.

Established in 1975, the award recognizes Mexican youth whose dedication inspires peers and exemplifies the values of personal growth and community development.

Martínez is at CIMMYT studying for her doctorate with the Knowledge, Technology, Innovation Group at Wageningen UR University in the Netherlands. She follows technology trajectories and processes of social inclusion/exclusion within them. As part of her research she is studying conservation agriculture, a set of farming practices based on minimal soil disturbance, permanent soil coverage and use of crop rotations, in Mexico’s Bajio region. Under MasAgro – a large Mexico-CIMMYT initiative – she is involved in work that helps smallholder farmers in breeding to improve their prized local maize varieties, and also looks at how farmers can access information through information and communications technology.

In 2001 at the age of 14, Martínez left her home of Tamazulápam Mixes, an indigenous village in the northern mountains of Oaxaca, to study at the Autonomous University of Chapingo in Central Mexico.

Her achievements are noteworthy. Of the more than 15 million indigenous Mexicans – about 15 percent of the country’s population – over a quarter of adults don’t have a single year of education and only 26 percent of women work or take part in other economic activities.  Mexico’s indigenous citizens are among the country’s poorest and most marginalized.

“I decided to study agronomy because I was raised in the countryside and rooted to the land,” Martínez said. “In Chapingo, though, I met people who didn’t know there were places in Mexico without electricity, drinkable and sanitary drainage systems or even access roads. “Yes, they exist!’ I would reply. ‘I actually have been in places, they exist in many regions of Mexico”’

Nearly 30 percent of indigenous peoples in Mexico live without running water and 66 percent of households cook with wood and charcoal.

Prior to undertaking Ph.D. studies, she received a Fullbright scholarship to study at the University of Arizona, where she obtained a master’s degree in agricultural and biosystems engineering focusing on water management, irrigation and bioethanol production from sweet sorghum.  Martínez then went on to work at CIMMYT as an intern and consultant before beginning her doctoral research with the organization’s socioeconomics program in 2013. Martínez credits meeting Conny Almekinders – her current professor and supervisor at Wageningen – and Carolina Camacho, a postdoctoral fellow with CIMMYT’s socioeconomic program, who specializes in social analysis of agricultural technologies, as the source of inspiration for pursuing her Ph.D. in the same topic.

“I hope more people are willing to help those who’ve not had the same opportunities and support I have had, to help change their reality,” Martínez said. “I’m grateful to all those who’ve helped me along the way, especially CIMMYT and the many researchers and people I have met in this long journey.”

As part of her National Youth Award, Martínez plans to donate books to libraries in marginalized communities and help develop policies that help these communities.

A Chat With: Mark Lynas – sustainable agriculture key to food security amid climate change

Environmentalist Mark Lynas
Environmentalist Mark Lynas

Any views expressed in this article are those of the author and not of CIMMYT

EL BATAN, Mexico (CIMMYT) – Sustainable agriculture must be adopted globally if natural ecosystems are to be protected as food production increases to feed a projected population of 9.7 billion by 2050, said author and environmentalist Mark Lynas.

An immediate move to transform overall agricultural practices is needed to overcome the challenges of climate change and biodiversity loss, said Lynas who will speak at a conference to mark the 50th anniversary of the International Maize and Wheat Improvement Center (CIMMYT) in September.

Rather than expanding agricultural production into new terrain, Lynas, who is a visiting fellow at the Cornell Alliance for Science, funded by the Bill & Melinda Gates Foundation said sustainable intensification agricultural practices are preferable to boost productivity while preserving environmental equilibrium.

A former critic of genetically modified organisms (GMOs) Lynas changed his mind when he said it became clearer to him that there was a scientific consensus that genetic engineering was safe. In his current role at Cornell University, he now advises on public sector biotechnology in developing countries.

Lynas will deliver a presentation during a session entitled “Future Landscapes” at the CIMMYT 50th anniversary conference on Sept. 29, 2016.

He shared some views on the future of agriculture in the following interview.

Q: What are the key challenges the world faces?

Well, it’s become something of a cliche now to talk about how we need to double world food supply by 2050 in order to feed the growing human population. I’m keen to add an environmental perspective to this statement. We need to double world food production but at the same time to shrink the area of cultivated land in order to protect natural ecosystems. With the ongoing crises in climate change and biodiversity loss, we cannot afford to plow up the rain forests or other ecologically valuable areas, so the only viable option is to sustainably intensify existing cultivated areas, hopefully with “rewilding” of spared lands. Obviously, this is a broad-brush assertion, and there is a lot of geographical complexity and nuance underlying this, that we should not forget.

Q: How does your area of specialization address these challenges? What innovation do you see improving agriculture?

I’m particularly focused on biotechnology in agriculture, which can help improve sustainability in many ways. Basically, if you can move from chemistry to biology in addressing challenges, from water use to yield to pest control, so much the better for the environment. An example would be the use of the Bt gene, which produces a protein in the plant that is toxic only to the pest itself and harmless to everything else, including us. That’s a much more sustainable option than indiscriminate insecticide sprays that have serious environmental and health impacts. However, because of their total opposition to genetic engineering, anti-GMO campaigners end up defending continued pesticide use, which is a very strange place for supposedly green activists to be. I’ve seen this at first hand in Bangladesh with the campaign against Bt brinjal. Anti-science superstition of this sort can end up being very environmentally damaging.

Q: What outcomes would you like to see from the CIMMYT conference?

CIMMYT experts were co-authors on a recent paper,  “Reducing emissions from agriculture to meet the 2 °C target” in Global Change Biology, that challenged the agriculture sector to reduce its greenhouse gas emissions significantly — by 1 billion tons a year — in order to contribute to meeting the 2 degrees C international climate change target. I thought this was a great initiative and I would love to see more attention given to it by other stakeholders at the CIMMYT conference. I really hope it becomes a talked about target that ends up being matched with real commitments and actions in the field.

Syngenta-CIMMYT collaboration on helping smallholders stay safe

Javier Valdés is country head at Syngenta Mexico, a global seeds and crop protection company. Any opinions expressed are his own.

Improving productivity, fighting rural poverty and protecting the environment are among the significant challenges the Mexican agricultural sector faces. For Syngenta and the International Maize and Wheat Improvement Center (CIMMYT), responding to such demands is a priority and a key component of collaboration projects for promoting sustainable agricultural practices. That is why we have worked together since 2010.

More recently, under an agreement signed in 2013, we strengthened our joint commitment to meet the challenges that Mexican farmers are facing. This public-private collaboration is forged on CIMMYT’s aim to work with various sectors throughout society to establish strategic alliances and on the “Good Growth Plan” an initiative by which Syngenta has made six ambitious commitments with farmers and the environment to contribute to the global fight for food security.

One of these objectives has to do with Syngenta’s commitment to train 20 million smallholder farmers worldwide in the proper use and management of crop protection products, which play a key role in ensuring food security.

In Mexico, CIMMYT-trained technicians working on MasAgro (a research and capacity building project for sustainable intensification of maize and wheat systems funded by Mexico’s Agriculture Department, SAGARPA) are receiving specialized advice from Syngenta experts on the correct use and management of agrochemicals or BUMA, its acronym in Spanish.

https://vimeo.com/164620285

To date, Syngenta has offered the BUMA training to 130 technicians of the States of Mexico, Sonora and Guanajuato, who have, in turn, offered advice to groups of about 25 small farmers each. Moreover, CIMMYT’s knowledge-sharing methodology has a multiplier effect on the transfer of knowledge that increases the number of small farmers trained exponentially.

The BUMA training focuses on five key rules of pesticide application: understand products labeling; follow the labeling; regularly maintain equipment used for pesticide application; proper use of protective equipment and safe clean up practices. Furthermore, the training includes additional basic information about what to do in an emergency, and general information on first aid, among other topics.

Crop protection is vital for modern-day farming because it can substitute soil nutrients absent or depleted in poor soils and eradicate pests or control diseases that affect yields. While large scale farmers in developed countries often have access to crop protection products, smallholder farmers in developing countries face the challenges of applying optimal doses of fertilizer or pesticides to make products affordable but also to prevent environmental damage and increase yields.

The overall intention of the Syngenta-CIMMYT collaboration in Mexico is to improve the working conditions of smallholder producers who make up the majority of farmers, provide security for their families, highlight the importance of the role of crop protection and encourage them to continue using them sustainably.

Syngenta Mexico is a Gold Sponsor of CIMMYT’s 50th anniversary celebration in Mexico from 27-29 September 2016.

A Chat With: U.S. nutritionist Julie Miller Jones speaks out about GE crops

  • Any views expressed in this article are those of the author and not of CIMMYT.

EL BATAN, Mexico (CIMMYT) – Leading nutritionist Julie Miller Jones aims to bust myths about biotechnology

U.S. nutritionist Julie Miller Jones
U.S. nutritionist Julie Miller Jones

by educating the general population on the benefits she believes genetically engineered (GE) crops can play in ending extreme hunger and malnutrition.

A shift away from the perception that GE crops are unsafe for the environment and human health is needed if they are to live up to their potential to increase food production and improve nutrition to meet the needs of growing global population, said Miller Jones who will speak at a conference to mark the 50th anniversary of the International Maize and Wheat Improvement Center (CIMMYT) in September.

Hunger and malnutrition are barriers to sustainable development, because they lead to lowered productivity, diminished health and limit the ability to improve livelihoods, she said. There are nearly 800 million people who suffer from hunger worldwide, the majority in developing countries, according to the United Nations.

A recent report released by the U.S. National Academies of Sciences, Engineering and Medicine said there is no substantiated evidence that foods from GE crops are less safe than foods from non-GE crops. Miller Jones said the general public must be educated about how biotechnology can safely improve food crops and contribute to nourishing a global population projected to grow by more than 2 billion by 2050 to more than 9.7 billion.

GE technologies enable the insertion from one species to another of genetic material (DNA) responsible, for example, for the production of vitamin precursors, such as pro-vitamin A carotenoids. Specific genes from maize, daffodil or carrot, placed in a staple grain, can help address vitamin A shortages in many regions, said the nutritionist. Conventional breeding does not have this ability to insert desirable genes from one species to another, and GE technologies can therefore enhance the contribution of plant breeding in addressing significant public health problems, she said.

Miller Jones has followed wheat-breeding developments over the years. She is a big fan of Norman Borlaug, the late CIMMYT wheat breeder and 1970 Nobel Peace Prize laureate known as the Father of the Green Revolution for the high-yielding wheat varieties he produced, which are credited with saving more than a billion lives in the developing world.

Miller Jones is outspoken about the negative consequences of gluten-free diets and has written several research papers that dispel myths generated by claims that the protein found in wheat is unhealthy.

She is a certified nutrition specialist who is also a distinguished scholar and professor emeritus of nutrition of nutrition at St. Catherine University in St. Paul, Minnesota. Interested in all aspects of nutrition science, she is actively involved in educating consumers against myths about nutrition and food safety. Currently, she is a scientific advisor to a number of groups such as the Healthy Grains Institute and the Grains Food Foundation that promote healthy diets and educates consumers on the benefits the right balance of grain-based foods.

Jones, who will speak during Session Five on “Future Landscapes” at the CIMMYT 50th anniversary conference on Sept. 29, 2016, shared some insights on the future of agriculture in the following interview.

Q: What is significant about CIMMYT: What role has CIMMYT played in your area of work?

CIMMYT and Norman Borlaug have always been inspirations to me ever since I began my graduate work at the University of Minnesota nearly 50 years ago. I’m interested in nutrition and feeding the world, I taught students about the Green Revolution and the achievements of Borlaug and CIMMYT in the world food supply section of my class on current issues throughout my entire academic career.

Q: What are the key challenges the world faces?

Producing enough food and communicating about the risks and benefits of anything we do. Communicating that there are risks to using GE crops, but these are assessed on a case-by-case basis.. What hasn’t been communicated effectively, so that the average person can understand and not fear the technology, is the risk of not using GE and other agricultural advancements. It’s ironic to me that those claiming to be interested in the environment often reject technologies that enable the use of fewer inputs and scarce resources and they do it in the name of the environment. All must communicate this in a non-defensive, clear way.

Q: How does your area of specialization address these challenges?

As a nutritionist and communicator, I want to work with breeders to ensure that nutrients are one of the aspects that are included in breeding programs. Further, I want to work with others to develop effective strategies to explain advancements in agriculture and plant breeding to reduce consumers’ fears and ease their acceptance and adoption.

China’s vice premier ushers in new era of agricultural collaboration

China’s Vice Premier Liu Yandong (right) with CIMMYT Director General Martin Kropff. Photo: A. Cortes/CIMMYT
China’s Vice Premier Liu Yandong (right) with CIMMYT Director General Martin Kropff. Photo: A. Cortes/CIMMYT

TEXCOCO, Mexico (CIMMYT) — A new collaborative program promising to train Chinese Ph.D. and postdoctoral students annually at the International Maize and Wheat Improvement Center (CIMMYT) builds on the three decade relationship the organization holds with China.

The memorandum of understanding was signed during China’s Vice Premier Liu Yandong’s visit to CIMMYT on 9 August by the Secretary General of the Chinese Scholarship Council Liu Jinghui and CIMMYT Director General Martin Kropff.

“In the face of climate change, water shortages and other challenges, innovative strategies to agricultural development are necessary for China’s future development,” Yandong said. “We hope to strengthen cooperation with CIMMYT — this will have a tremendous effect on both China and the world.”

Since 1970, more than 20 Chinese institutes have been involved in germplasm exchange and improvement, conservation agriculture and capacity building, with 56 Chinese researchers receiving their doctoral degrees with CIMMYT. Since the CIMMYT-China Office was opened in 1997, 26 percent of wheat grown in China has derived from CIMMYT materials.

Secretary General of the Chinese Scholarship Council Liu Jinghui (left) with CIMMYT Director General Martin Kropff during the signing of the Memorandum of Understanding to train 10 PhD and Postdoc students at CIMMYT each year. Photo: A. Cortes/CIMMYT
Secretary General of the Chinese Scholarship Council Liu Jinghui (left) with CIMMYT Director General Martin Kropff during the signing of the Memorandum of Understanding to train 10 PhD and Postdoc students at CIMMYT each year. Photo: A. Cortes/CIMMYT

During the visit, the vice premier discussed China’s new five-year plan (2016 – 2020) that focuses on innovation, international cooperation and green growth, to modernize agriculture in an environmental friendly way over the next 20 to 30 years.

Benefits of three decades of international collaboration in wheat research have added as much as 10.7 million tons of grain – worth $3.4 billion – to China’s national wheat output. Eight CIMMYT scientists have won the Chinese Friendship Award – the highest award for “foreign experts who have made outstanding contributions to the country’s economic and social progress.”

New Publications: Study reveals new insights about machinery adoption in Bangladesh

Local service provider Yunus operates various kinds of machinery that he offers to farmers in Barisal district, Bangladesh. Photo: S. Storr/CIMMYT
Local service provider Yunus operates various kinds of machinery that he offers to farmers in Barisal district, Bangladesh. Photo: S. Storr/CIMMYT

El Batan, MEXICO (CIMMYT) – A new study by scientists at The International Wheat and Maize Improvement Center (CIMMYT) looks at large-scale adoption practices of agricultural machinery appropriate for smallholder farmers in Bangladesh, concluding that sustained emphasis on improving infrastructure, services and assuring credit availability is necessary to facilitate adoption.

There is strong advocacy for agricultural machinery appropriate for smallholder farmers in South Asia. Such “scale-appropriate” machinery can increase returns to land and labor, but high capital investment costs make it hard for farmers to own these machines. Increasing machinery demand has resulted in relatively well-developed markets for rental services for tillage, irrigation, and post-harvest operations.

Studying households that own machinery can provide insights into the factors that facilitate or limit adoption, which can help development planners, policy makers and national and international banks to target investments more appropriately. The study “Factors associated with small-scale agricultural machinery adoption in Bangladesh: census findings,” is the first recent study to examine these practices at large scale, using the case of Bangladesh.

The paper examines the adoption information gap in Bangladesh by reviewing the country’s historical policy environment that facilitated the development of agricultural machinery markets. It then uses recent Bangladesh census data from over 800,000 farm households to identify variables associated with the adoption of the most common smallholder agricultural machinery like irrigation pumps, threshers and power tillers.

Results of the study indicate that machinery ownership is positively associated with household assets, credit availability, electrification, and road density. These findings suggest that donors and policy makers should focus not only on short-term projects to boost machinery adoption, but also emphasize improving physical and civil infrastructure and services, as well as assuring credit availability to facilitate the adoption of scale-appropriate farm machinery.

Check out this study and other recent publications from CIMMYT researchers, below:

 

  1. 13C Natural Abundance of Serum Retinol Is a Novel Biomarker for Evaluating Provitamin A Carotenoid-Biofortified Maize Consumption in Male Mongolian Gerbils. 2016. Gannon, B.; Pungarcher, I.; Mourao, L.; Davis, C.R.; Simon, P.; Pixley, K.V.; Tanumihardjo, S.A. The Journal of Nutrition 146 : 1290-1297.
  2. Does closing knowledge gaps close yield gaps? On-farm conservation agriculture trials and adoption dynamics in three smallholder farming areas in Zimbabwe. 2016. Cheesman, S.; Andersson, J.A.; Frossard, E. Journal of Agricultural Science. Online First.
  3. Factors associated with small-scale agricultural machinery adoption in Bangladesh : census findings. 2016. Mottaleb, K.A.; Krupnik, T.J.; Erenstein, O. Journal of Rural Studies 46 : 155-168.
  4. Fertilization strategies in Conservation Agriculture systems with Maize-Legume cover crops rotations in Southern Africa. 2016. Mupangwa, W.; Thierfelder, C.; Ngwira, A. Experimental Agriculture. Online First.
  5. High temperatures around flowering in maize: effects on photosynthesis and grain yield in three genotypes. 2016. Neiff, N.;Trachsel, S.; Valentinuz, O.R.; Balbi, C.N.; Andrade, H.F. Crop Science 56 : 1-11.
  6. Kenyan Isolates of Puccinia graminis f. sp. tritici from 2008 to 2014 : virulence to SrTmp in the Ug99 race group and implications for breeding programs. 2016. Newcomb, M.; Olivera Firpo, P.D.; Rouse, M.N.; Szabo, L.J.; Johnson, J.; Gale, S.; Luster, D.G.; Wanyera, R.; Macharia, G.; Bhavani, S.; Hodson, D.P.; Patpour, M.; Hovmoller, M.S.; Fetch, T.G.; Yue Jin. Phytopathology 106 (7) : 729-736.
  7. Targeting drought-tolerant maize varieties in Southern Africa : a geospatial crop modeling approach using big data. 2016. Kindie Tesfaye Fantaye; Sonder, K.; Cairns, J.E.; Magorokosho, C.; Amsal Tesfaye Tarekegne; Kassie, G.; Getaneh, F.; Abdoulaye, T.; Tsedeke Abate; Erenstein, O. The International Food and Agribusiness Management Review 19 : 75-92.
  8. The adoption problem; or why we still understand so little about technological change in African agriculture. 2016. Glover, D.; Sumberg, J.; Andersson, J.A. Outlook on Agriculture 45 (1): 3-6.
  9. The effect of major income sources on rural household food (in)security : evidence from Swaziland and implications for policy. 2016. Mabuza, M.L.; Ortmann, G.F.; Wale, E.; Mutenje, M. Ecology of Food and Nutrition 55 (2) : 209-230.
  10. Weed management in maize using crop competition: a review. 2016. Mhlanga, B.; Chauhan, B.S.; Thierfelder, C. Crop Protection 88: 28-36.

Bill & Melinda Gates Foundation CEO visits CIMMYT

EL BATAN, Mexico (CIMMYT) – Bill & Melinda Gates Foundation CEO Sue Desmond-Hellmann visited the

Bill & Melinda Gates Foundation CEO Susan Desmond-Hellmann toured CIMMYT headquarters in Mexico. Photo: Alfonso Cortes/ CIMMYT
Bill & Melinda Gates Foundation CEO Sue Desmond-Hellmann toured CIMMYT headquarters in Mexico. Photo: Alfonso Cortes/ CIMMYT

International Maize and Wheat Improvement Center (CIMMYT) this week to learn more about how research reaches smallholder farmers.

During her visit, Desmond-Hellmann spoke with scientists and researchers on how CIMMYT is working to develop new and innovative solutions to end poverty through agriculture.  Through a hands-on tour of CIMMYT’s germplasm bank, Desmond-Hellmann saw how the world’s most diverse collections of maize and wheat are providing genetic diversity to breeding programs worldwide to tackle food security and climate change. The science was then put into practice in the field, where the Bill & Melinda Gates Foundation CEO pollinated maize and learned about the complexity of breeding for tolerance to heat and drought and resilience to diseases.

Remote sensing technologies, that make it possible to observe the dynamics of anything from single plants to entire landscapes as they change over time, were also showcased during the visit as an effective and adaptable tool for breeding and crop management including nutrient use efficiency, climate resilience and irrigation systems.

Bill & Melinda Gates Foundation CEO Sue Desmond-Hellmann pollinates maize. Photo: Alfonso Cortes/ CIMMYT
Bill & Melinda Gates Foundation CEO Sue Desmond-Hellmann pollinates maize. Photo: Alfonso Cortes/ CIMMYT

Nutrition and quality were also emphasized as keystones of CIMMYT’s work. Desmond-Hellmann tasted different types of bread, and learned how CIMMYT wheat varieties meet market demands for flour and wheat products globally. A demonstration on how CIMMYT is improving the nutritional quality of crops by enhancing the pro-vitamin A, iron and zinc concentrations of maize and wheat grains showed how agricultural and nutritional sciences are working together to fight “hidden hunger.”

Also joining the visit were Rodger Voorhies, the organization’s managing director of global development, Tony Cavalieri, senior program officer of agricultural development, and Casey Hanewall, the director of the CEO and chief staff office. The Bill & Melinda Gates foundation is one of CIMMYT’s major donors with funding for key projects including Cereal Systems Initiative for South Asia (CSISA) and Stress Tolerant Maize for Africa (STMA). CIMMYT also receives funding for important work like that of developing and deploying maize that resists the deadly Maize Lethal Necrosis disease and projects to develop micronutrient rich maize and wheat varieties.

 

5th International master class on soil born pathogens of wheat

4ESKISEHIR, Turkey — The 5th International Master Class on Soil Borne Pathogens of Wheat held at the Transitional Zone Agricultural Research Institute (TZARI), Eskisehir, Turkey, on 11-23 July 2016, brought together 45 participants from 16 countries of Central and West Asia and North Africa.

During the opening ceremony, participants were welcomed by Yusuf Aslan, head of Field Crop Research, Turkish Ministry of Food, Agriculture and Livestock (MFAL), Suat Kaymak, Plant Health Department head, MFAL, Sabri Cakir, TZARI director, and Amer Dababat, leader, Soil Borne Pathogens Program, CIMMYT-Turkey.

This intensive residential master class built on the success of previous Crawford Fund Master Classes on SBP (Turkey 2000 and 2010; China 2005; and Tunisia 2008). Its key objectives were to: (1) expand the existing soil borne pathogen (SBP) capacity of researchers from Central and West Asia and North Africa to help them better understand and work with SBP of cereals; (2) help these politically and food insecure regions — in particular, Syria, Iraq, North Africa, and Afghanistan — to re-build SBP capacity; and (3) refine and publish the existing Master Class Theoretical Manual for this Master Class and create an electronic version to be used in future training activities.

This year’s master class was taught by a total of 15 specialists, including three renowned experts from abroad: Timothy Paulitz, Research Plant Pathologist, USDA-ARS, Pullman, WA; Grant Hollaway, cereal plant pathologist, Australia; and Ian Riley, nematologist, Australia. The quality of the scientific program and the participation of SBP specialists from various countries made it a highly successful course.

Among other things, class participants learned how to isolate, extract and identify SBP in order to properly diagnose their SBP problems, as well as use host resistance and other environmentally friendly control methods to control the pathogens. They also focused on how to incorporate SBP resistance breeding into a cereal breeding program and apply molecular biology to identify and breed SBP resistant germplasm.

The class helped to further develop participants’ research management, technical and personal capacities, and hone their proposal writing skills. Finally, it fostered the establishment of a regional network of pathologists (including key CGIAR pathologists) to work on SBPs.

Upon returning to their home countries, participants will become involved in researching SBPs, which will ultimately benefit farmers and the industry. This will also forge better linkages between the master class and other national institutes in the region and enable them to jointly combat SBPs, alleviate hunger and contribute to food security.

This latest course was organized and coordinated by Abdelfattah Dababat, SBP Specialist, CIMMYT-Turkey, as part of the ICARDA CIMMYT Wheat Improvement Program (ICWIP), and funded by CIMMYT, MFAL, Syngenta, The Crawford Fund, ACIAR, and GRDC.

For more information, please contact Abdelfattah A. Dababat at a.dababat@cgiar.org 

 

CIMMYT and partners set the pace in maize and wheat research in Africa

NAIROBI, Kenya (CIMMYT) – The recent inauguration of a new seed storage cold room at the Kenya Agricultural and Livestock Research Organization (KALRO) research center at Kiboko in Makueni County, about 155 kilometers from the capital, adds to the top notch research establishments managed by the national partners in Africa together with the International Maize and Wheat Improvement Center (CIMMYT). This  successful partnership  continues to help farmers overcome crippling challenges in farming and to realize the yield potential of improved varieties.

Since its establishment in Africa, over 40 years ago, CIMMYT has prioritized high quality research work in state-of-the-art research facilities developed through long-standing partnerships with national research organizations, such as KALRO.

“If CIMMYT were to be established today, it would be headquartered in Africa because this is where smallholder farmers face the biggest challenges.  At the same time, this is the place where outstanding work is being done to help the farmers rise above the challenges, and with great success,” said Martin Kropff, CIMMYT Director General during his recent visit to Kenya.

The cold room jointly inaugurated by Kropff, and KALRO Director General, Eliud Kireger will help store high value maize seeds with an array of traits including resilience to diseases, insect-pests and climatic stresses as drought and heat, for up to 10 years, without the need for seed regeneration every year, thereby avoiding risk of contamination and use of scarce resources.  It will also help make seed readily available for distribution to national partners and seed companies to reach the farmers much faster.

Kireger conveyed his appreciation for the cold room and other research facilities established on KALRO sites, terming these achievements as “rewarding not just to KALRO and to the seed companies, but to many smallholders in Africa, who continue to be the inspiration behind every effort put into maize research and development work by KALRO and partners like CIMMYT.”

In addition to the seed storage cold room, Africa hosts the maize lethal necrosis (MLN) disease screening facility in sub-Saharan Africa. The MLN screening facility was established in 2013 at KALRO Naivasha Center in Kenya in response to the outbreak of the devastating MLN disease in eastern Africa. The facility since then has supported both the private and public institutions to screen maize germplasm for MLN under artificial inoculation and in identifying MLN tolerant/resistant lines and hybrids.

Did you know? •Over 60,000 entries have been tested at the MLN screening site in Naivasha, Kenya since 2013. • 16 private and public institutions including seed companies and national research organizations have screened their germplasm for MLN.
Combating MLN:                                                                                                                                            
• Over 60,000 entries have been tested at the MLN screening site in Naivasha, Kenya since 2013.
• 16 private and public institutions including seed companies and national research organizations have screened their germplasm for MLN. Photo: K. Kaimenyi/CIMMYT

“The MLN screening facility (also a quarantine site) has been supporting the national partners in sub-Saharan Africa, key multinational, local and regional seed companies and CGIAR centers.  This facility has become a major resource in the fight against MLN regionally,” added B.M. Prasanna, Director of CIMMYT’s Global Maize Program as well as the CGIAR Research Program MAIZE. “Tremendous progress has been made through this facility in the last three years. Several promising maize lines with tolerance and resistance to MLN have been identified, and used in breeding programs to develop improved maize hybrids. Already five MLN-tolerant hybrids have been released and now being scaled-up by seed companies for reaching the MLN-affected farmers in Kenya, Uganda and Tanzania. As many as 22 MLN-tolerant and resistant hybrids are presently undergoing national performance trials in east Africa,” remarked Prasanna.

Another major focus of CIMMYT and partners in the region is to prevent the spread of MLN from the endemic to non-endemic countries in Africa.  “This is a strong message to convey that we not only work hard to develop MLN resistant maize varieties for the farmers, but we are also very keen to control the spread of the disease” remarked Kropff during a visit to the site.

In Zimbabwe, an MLN quarantine facility has been established in 2016, in collaboration with the government. This facility is key for safe transfer of research materials, including those with MLN resistance into the currently MLN non-endemic countries in southern Africa, before they get to the partners.

In order to keep up with the emerging stresses and to accelerate development of improved maize varieties, the maize Doubled-Haploid (DH) facility was established in 2013 by CIMMYT and KALRO at the KALRO research center in Kiboko. This facility helps the breeders to significantly shorten the process of developing maize parental lines from 7–8 seasons (using conventional breeding) to just 2–3 seasons.

Over 92,000 Doubled-Haploid (DH) maize lines have been developed from CIMMYT bi-parental crosses. Photo: B. Wawa/CIMMYT
Over 92,000 Doubled-Haploid (DH) maize lines have been developed from CIMMYT bi-parental crosses. Photo: B. Wawa/CIMMYT

“Through the facility at Kiboko, we have been able to develop over 60,000 DH lines in 2015 from diverse genetic backgrounds. The DH facility also supports the national agricultural research organisations and small and medium enterprise partners in sub-Saharan Africa to fast-track their breeding work through DH lines,” said Prasanna.

For wheat research-for-development work in Africa, the largest stem rust phenotyping platform in the world sits at KALRO research center in Njoro, Kenya. The facility screens at least 50,000 wheat accessions annually from 20-25 countries. Following the emergence of the Ug99 wheat rust disease pathogen strain in Uganda, the disease spread to 13 countries in Africa. Close to 65 wheat varieties that are resistant to Ug99 stem rust disease have been released globally as a result of the shuttle breeding that includes selection from the screening site at KALRO Njoro.

“CIMMYT’s yearly investment of USD 37 million in Africa through various projects has translated into a success story because of the strong collaboration with our partners across Africa,” said Stephen Mugo, CIMMYT’s Regional Representative for Africa. He further added that “research work in Africa is not yet done. No institution, including CIMMYT, cannot do this important work alone.  We need to, and will, keep on working together with partners to improve the livelihoods of the African smallholders.”

CIMMYT DG Martin Kropff studying an MLN affected plant. Photo: K. Kaimenyi/CIMMYT
CIMMYT DG Martin Kropff studying an MLN affected plant. Photo: K. Kaimenyi/CIMMYT

 

Key funders of CIMMYT work in Africa include, the USAID, Bill & Melinda Gates Foundation, the Sygenta Foundation for Sustainable Agriculture, Australian Centre for International Research, CGIAR Research Program on Maize, Foreign Affairs Trade and Development Canada.

receive newsletter

Expanding for faster and wider deployment of heat-tolerant hybrids in South Asia

 

Caption: Chetana Patil, Joint Director of Agriculture (left), discusses the strength of new heat-tolerant maize hybrids with farmers. Photo: UAS, Raichur
Caption: Chetana Patil, Joint Director of Agriculture (left), discusses the strength of new heat-tolerant maize hybrids with farmers. Photo: UAS, Raichur

KATHMANDU, Nepal (CIMMYT) —  Launched by CIMMYT in January 2013 in collaboration of five public sector institutions and three seed companies from four South Asian countries (Bangladesh, India, Nepal and Pakistan), the Heat Tolerant Maize for Asia (HTMA) project is a public-private partnership that targets resource-poor maize farmers in South Asia who face weather extremes and climate change effects.

Funded by the United States Agency for International Development (USAID) under the Feed the Future (FTF) initiative, HTMA receives significant contributions from various partner institutions and companies. As a result of meticulously planned research on fast-track development and deployment of heat tolerant maize hybrids in South Asia, within three years the first 18 heat resilient hybrids were licensed to HTMA partners for deployment and scale-out. The project’s outputs attracted the attention of other players in the region, especially private seed companies, who expressed their interest in becoming a part of HTMA. A total of 12 new partners (five seed companies each from Bangladesh and Pakistan and two from Nepal) formally joined the project. They participated for the first time in the project’s annual review and planning meeting jointly organized by the Nepal Agricultural Research Program (NARC) and CIMMYT in Kathmandu, Nepal, on 25-26 July 2016.

Executive Director Yamraj Pandey, NARC, Nepal, chaired the inaugural session of the fourth annual review and planning meeting. In his opening remarks, Pandey emphasized the importance of stress resilient maize hybrids for coping with climate change effects and highlighted the remarkable progress HTMA has made in such a short period, giving farmers in stress-prone maize growing Asian environments much-needed heat tolerant hybrids. B.M. Prasanna, Director of CIMMYT’s Global Maize Program and of CRP-MAIZE, gave an overview of the new CGIAR research program on Maize Agri-food Systems, its focus and priorities, and highlighted the importance of stress-resilient maize for improving food security and livelihoods, especially in regions vulnerable to climate change, such as the Asian tropics.

Hailu Tefera, Agricultural Resource Specialist, Bureau for Food Security, USAID, gave an update on the FTF initiative and highlighted its priorities, which include reducing poverty and malnutrition in children in target countries through accelerated inclusive agricultural growth and a high-quality diet. He also informed meeting participants that on 7 July 2016, the US Congress passed the Global Food Security Act (GFSA), which will make FTF into law. Senior CIMMYT maize physiologist and HTMA project leader P.H. Zaidi shared the latest progress made under HTMA including the identification of genomic regions for key heat tolerant traits, development of improved heat tolerant populations using genomic selection, testing of new hybrid combinations, identification of promising hybrids, and the latest capacity development efforts.

At a series of technical sessions, project objective leaders, including Mitch Tuinstra, Purdue University professor, Sudha Nair, CIMMYT molecular maize breeder, and M.T. Vinayan, CIMMYT maize stress specialist for South Asia, presented the latest research results in each objective. HTMA leaders from public and private sector partners presented results of HTMA trials conducted at their locations/countries, and shared a list of top-ranking, best-bet heat-tolerant maize hybrids that will be subjected to large-scale testing and then deployed. They also described efforts aimed at disseminating HTMA hybrids through on-farm demonstrations and farmer-participatory selection of final products.. Most impressive was that each partner has identified a second batch of promising hybrids suitable for their target markets/agro-ecologies.

Caption: HTMA team at 4th annual review and planning meeting during 25-26 July, 2016 in Kathmandu, Nepal. Photo: CIMMYT
Caption: HTMA team at 4th annual review and planning meeting during 25-26 July, 2016 in Kathmandu, Nepal. Photo: UAS, Raichur

The project started a unique initiative aimed at developing hybrids using elite maize lines from Pioneer and HTMA. Kamal Pandey from Pioneer highlighted the performance of CIMMYT x Pioneer hybrids, which revealed the significant heterosis between CIMMYT and Pioneer maize germplasm, and should help identify promising joint hybrids suitable for stress-prone ecologies of South Asia. Zaidi and Tuinstra jointly presented HTMA’s progress on capacity development and provided updates on student research projects, including nine Ph.D. and six M.Sc. students, plus a total of 10 workshops/training courses organized so far on subjects such as precision phenotyping, molecular breeding, data management and seed systems. A total 303 participants have been trained, including researchers from public sector institutions and seed companies in Bangladesh, India, Nepal and Pakistan.

The meeting was attended by over 50 program leaders, scientists and representatives from collaborating institutions in South Asia, including BARI (Bangladesh), Nepal’s National Maize Research Program (NMRP), Pakistan’s Maize and Millet Research Institute, Bhutan’s national maize program, and two of India’s state agricultural universities. Also in attendance were partner seed companies in the region, including Pioneer Hi-Bred, Kaveri Seeds and Ajeet Seeds (India), and new seed company partners including Sean Seeds and Hariyali Community Seeds (Nepal); Jullundhar Pvt. Ltd., Kanzo Quality Seeds, CKD Seeds & Fertilizers, Hisell Seeds, and Zamindara Seeds (Pakistan); and Lalteer Seeds, Krishibid, BRAC, ACI Ltd., and Supreme Seeds (Bangladesh). International institutions such as Purdue University, USAID and CIMMYT also participated in the event.

The project’s progress and updates were critically reviewed by the project steering committee (PSC) headed by Prasanna, who expressed great satisfaction with its overall progress and achievements. Speaking for USAID, Hailu Tefera said they are highly impressed with HTMA’s progress and consider it a model public-private partnership. Other PSC members also expressed their satisfaction and agreed that the HTMA team deserves special appreciation for the remarkable progress they have achieved within just four years.

receive newsletter

Ancient maize varieties provide modern solution to tar spot complex

Felix Corzo Jimenez , a farmer in Chiapas, Mexico, examines one of his maize plants infected with tar spot complex.
Felix Corzo Jimenez , a farmer in Chiapas, Mexico, examines one of his maize plants infected with tar spot complex. Photo: J. Johnson/CIMMYT.

CHIAPAS, Mexico — In southern Mexico and Central America a fungal maize disease known as tar spot complex (TSC) is decimating yields, threatening local food security and livelihoods. In El Portillo, Chiapas, Mexico, local farmer Felix Corzo Jimenez sadly surveys his maize field.

“It’s been a terrible year. We’ll be lucky if we harvest even 50 percent of our usual yields,” he said, examining a dried up maize leaf covered in tiny black dots, and pulling the husk off of an ear to show the shriveled kernels, poorly filled-in. “Tar spot is ruining our crops.”

Named for the black spots that cover infected plants, TSC causes leaves to die prematurely, weakening the plant and preventing the ears from developing fully, cutting yields by up to 50 percent or more in extreme cases. Caused by a combination of three fungal infections, the disease occurs most often in cool and humid areas across southern Mexico, Central America and South America. The disease is beginning to spread – possibly due to climate change, evolving pathogens and susceptible maize varieties – and was reported in important maize producing regions of central Mexico and the northern United States for the first time last fall. To develop TSC resistant maize varieties that farmers need, the Seeds of Discovery (SeeD) initiative is working to “mine” the International Maize and Wheat Improvement Center’s (CIMMYT) genebank for native maize varieties that may hold genes for resistance against the disease.

The first stage of fungal maize disease TSC, with tiny, black “tar spots” covering the leaf. The spots will soon turn into lesions that kill the leaf, preventing photosynthesis from occurring.
The first stage of fungal maize disease TSC, with tiny, black “tar spots” covering the leaf. The spots will soon turn into lesions that kill the leaf, preventing photosynthesis from occurring. Photo: J. Johnson/CIMMYT.

The majority of maize varieties planted in Mexico today are susceptible to TSC, meaning that farmers would have to spray expensive fungicides several times each year to protect their crops against the disease, a huge financial burden that few can afford. Creating varieties with natural resistance to tar spot is an economical and environmentally friendly option that will protect the livelihoods of the region’s smallholder maize farmers.

“This project targets the many farmers in the region with limited resources, and the small local seed companies that sell to farmers at affordable prices,” says Terry Molnar, SeeD maize breeder.

The key to developing maize varieties with resistance to TSC lies in the genetic diversity of the crop. For thousands of years, farmers have planted local maize varieties known as landraces, or descendants from ancient maize varieties that have adapted to their environment. Over centuries of selection by farmers these landraces accumulated specific forms of genes, or alleles, which helped them to resist local stresses such as drought, heat, pests or disease.

These novel genetic traits found in landrace maize can help breeders develop improved maize varieties with resistance to devastating diseases such as TSC. However, it is quite challenging for breeders to incorporate “exotic” landrace materials into breeding programs, as despite their resistance to stresses found in their native environment, they often carry unfavorable alleles for other important traits.

A maize ear with shriveled kernels that are poorly filled, a major side effect of TSC that reduces farmer’s tields.
A maize ear with shriveled kernels that are poorly filled, a major side effect of TSC that reduces farmer’s yields. Photo: J. Johnson/CIMMYT.

To help breeders incorporate this valuable genetic diversity into breeding programs, SeeD works to develop “bridging germplasm” maize varieties, which are created by transferring useful genetic variation from landraces held in the CIMMYT genebank into plant types or lines that breeders can readily use to develop the improved varieties farmers need. These varieties are created by crossing landrace materials with CIMMYT elite lines, and selecting the progeny with the genetic resistance found in a landrace without unfavorable traits breeders, farmers and consumers do not want.

“The CIMMYT maize genebank has over 28,000 maize samples from 88 countries, many of which are landraces that may have favorable alleles for disease resistance,” Molnar says. “We all know that there is good material in the bank, but it’s scarcely being used. We want to demonstrate that there are valuable alleles in the bank that can have great impact in farmers’ fields.”

A susceptible maize variety infected with TSC (left) compared to a healthy maize plant , a resistant variety immune to the disease (right).
A susceptible maize variety infected with TSC (left) compared to a healthy maize plant , a resistant variety immune to the disease (right). Photo: J. Johnson/CIMMYT.

SeeD scientists began by identifying landrace varieties with genetic resistance to TSC. Trials conducted in 2011, 2012 and 2014 evaluated a “core set” – a genetically diverse subset of the maize germplasm bank – in search of resistant varieties.  Of the 918 landrace varieties planted in 2011 and 2012, only two landraces—Oaxaca 280 and Guatemala 153—were outstanding for tolerance to the disease.  Genotypic data would later confirm the presence of unique resistant alleles not currently present in maize breeding programs that could be deployed into SeeD’s bridging germplasm. This bridging germplasm will be available to breeders for use in developing elite lines and varieties for farmers.

“As a breeder, I’m excited to work with SeeD’s bridging germplasm as soon as it is available,” said Felix San Vicente, CIMMYT maize breeder working with the CGIAR Research Program on Maize and the Sustainable Modernization of Traditional Agriculture (MasAgro) project.

Terry Molnar, maize breeder with SeeD, and Enrique Rodriguez, field research technician with SeeD, evaluate bridging germplasm for resistance to TSC.
Terry Molnar, maize breeder with SeeD, and Enrique Rodriguez, field research technician with SeeD, evaluate bridging germplasm for resistance to TSC. Photo: J. Johnson/CIMMYT.

Up to this point, most breeders have only used elite lines to develop hybrids, because landraces are extremely difficult to use. This practice, however, greatly limits the genetic diversity breeders employ. Using novel alleles from maize landraces allows breeders to develop improved hybrids while broadening the genetic variation of their elite germplasm. This novel genetic diversity is very important to protect crops from evolving pathogens, as it means the varieties will have several resistant alleles, including alleles that have never been used in commercial germplasm before.

“The more alleles the better,” said San Vicente, “as it protects the line longer. It provides a form of insurance to smallholder farmers as these varieties will have more genes for resistance, which reduces their risk of losing their crop.”

To ensure that farmers can access this improved seed, CIMMYT works with small local seed companies. “The price of seed will be very affordable,” according to San Vicente. “As CIMMYT is a non-profit, we provide our improved materials to seed companies at no cost.”

The TSC resistant bridging germplasm developed by SeeD has been tested in on-farm trials in TSC-prone sites in Chiapas and Guatemala, with promising results, and will be publicly available to breeders in 2017. In the meantime, local farmers look forward to seeing the results of this research in their own fields. “A variety with the disease resistance of a landrace and the yield and performance of a hybrid is exactly what we need,” says Corzo Jimenez.

Corzo Jimenez in his maize field infected with TSC. Varieties made from SeeD bridging germplasm would allow him to protect his crop without applying expensive fungicides.
Corzo Jimenez in his maize field infected with TSC. Varieties made from SeeD bridging germplasm would allow him to protect his crop without applying expensive fungicides. CIMMYT/Jennifer Johnson.

SeeD is a multi-project initiative comprising: MasAgro Biodiversidad, a joint initiative of CIMMYT and the Mexican Ministry of Agriculture (SAGARPA) through the MasAgro (Sustainable Modernization of Traditional Agriculture) project; the CGIAR Research Programs on Maize (MAIZE CRP) and Wheat (WHEAT CRP); and a computation infrastructure and data analysis project supported by the UK’s Biotechnology and Biological Sciences Research Council (BBSRC). To learn more about the Seeds of Discovery project, please go to http://seedsofdiscovery.org/.

receive newsletter

CIMMYT 2015 annual report ‘Building resilience to risk’

 

Crucial funding from CGIAR Fund Donors and other generous supporters allows the International Maize and Wheat Improvement Center (CIMMYT) and its partners worldwide to offer farmers in developing countries innovative technology and knowledge. Through this work, farmers are better equipped to address the shocks of shifting markets, climate change, rising grain demand, land degradation and resource scarcities.

At stake are nothing less than local food security and nutrition and the capacity to feed a global population of at least 9 billion by 2050.

 

Button magazine format