research: Maize

Unlocking genetic innovations through collaborative pathways

Written by Julian Bañuelos-Uribe on June 10, 2024. Posted in Blogs.

Regional partners examine the CIMMYT maize lines displayed during field day. (Photo: CIMMYT)

The International Maize Improvement Consortium for Africa (IMIC-Africa) held its Southern Africa field day on 25 March 2024 at Harare, Zimbabwe. IMIC-Africa, launched by CIMMYT in 2018, is a public-private partnership designed to strengthen maize breeding programs of partner institutions in Africa. As part of this initiative, CIMMYT organizes annual field days which bring together representatives from seed companies and national agricultural research system (NARS) partners across Zimbabwe and Kenya.

At the heart of the IMIC-Africa field day lies a vibrant showcase of genetically diverse materials developed from various maize breeding pipelines of CIMMYT in Southern Africa. Such events serve as a catalyst to drive innovations in maize breeding programs, deliver solutions to stakeholders, and enable seed companies and NARS partners to make informed selections tailored to local contexts.

“It is an important forum to have organized discussions with partners, and redesign—where possible—our breeding approaches to deliver targeted products to stakeholders,” said Director of CIMMYT’s Global Maize Program, One CGIAR Global Maize Breeding Lead, and One CGIAR Plant Health Initiative Lead, B.M. Prasanna. “The main stakeholders here are our partners, including seed companies and public sector national programs, through whom we reach out to farming communities.”

The significance of these field days cannot be overstated. It allows the partners to have a critical look at the breeding materials on display and undertake selections of maize lines relevant to their breeding programs. In addition, the IMIC-Africa field days enable CIMMYT team to have structured dialogues with diverse stakeholders and to review and refine breeding (line and product development) strategies and approaches.

“It is key to bridge the gap between the national programs and private sector players. This platform allows us to stay ahead in terms of research, and innovative breakthroughs in the seed sector,” added Kabamba Mwansa, principal agriculture research officer, ZARI, Zambia and Southern Africa Breeding, and seed systems network coordinator.

Highlights from the Harare field day

With an impressive array of 737 CIMMYT maize lines on display, partners at the Harare field day gained insights about the performance of different materials. The materials span early-, intermediate-, and late- maturity groups to nutritious maize breeding pipelines. This comprehensive showcase enabled seed companies and NARS partners to make informed selections, tailored to their local contexts. The material on display ranged from early generation (one or two years of testing data) to advanced generation (more than three years of testing) coming from the Southern Africa breeding pipelines targeting multiple market segments.

One of the strategic priorities of CIMMYT’s maize breeding program in Africa is improving the nutritional quality of maize. This is exemplified by the development of provitamin A-enriched maize (PVA). On display were 169 lines originating from the PVA-enriched maize breeding pipeline. The efforts underscore CIMMYT’s commitment to address regional nutritional needs through targeted breeding initiatives.

Felix Jumbe, a partner from Peacock Seeds in Malawi reflected on the importance of the IMIC-Africa partnership. “We have been part of IMIC-Africa since its inception, and we continue to appreciate the different climate-resilient lines emerging from CIMMYT maize breeding programs in Africa. Last year, we sold out of our seed as people continue to appreciate the need for resilient maize varieties. The drought-tolerant (DT) maize lines from the consortium have been a huge selling point as most farmers are happy with it,” he said.

The field day not only showcased cutting-edge breeding innovations but also offered a historical perspective by tracing the trajectory of the most popular lines taken up under IMIC-Africa from 2019 to 2023. This served as a crucial reference point for partners, enabling them to assess the performance of newly displayed lines against established benchmarks. Furthermore, partners considered the presence of trait donors as invaluable in improving resistance to key biotic stresses or tolerance to certain abiotic stresses prevalent in Africa.

CIMMYT, NARS, and seed company partners participate in the IMIC-Africa field day in Harare, Zimbabwe. (Photo: CIMMYT)

CIMMYT partnership continues to add value

In the face of escalating environmental pressures, including climate change and pest infestations such as the fall armyworm (FAW), CIMMYT breeders have been working tirelessly to develop resilient varieties capable of withstanding these challenges. Partners such as SeedCo have embraced these robust varieties. For breeder Tariro Kusada, it is her second year of attending the IMIC- Africa field day. “We continue to see value in getting breeding materials through IMIC. The vigor from the lines on display is outstanding as compared to last year. We hope the vigor translates to yield.”

Danny Mfula from Synergy Zambia reinforced the value of the partnership. “It is always good to tap into CIMMYT’s germplasm to supplement what we have. We are glad that more FAW-tolerant hybrids are coming on board. We want to leverage on these developments as farmers have gone through a lot of challenges to control FAW,” he said.

As the harvest stage approaches, partners can select their material by assessing the performance of the lines from flowering to grain filling stages. Each plot’s harvest provides invaluable insights, guiding partners in their selections. Partners are also given the opportunity to view the improved maize lines from CIMMYT through a virtual gallery of ears from each plot, ensuring informed decision-making. By fostering dialogue, facilitating partnerships, and highlighting genetic innovations, the field days catalyze progress towards a more sustainable and resilient future for African agriculture.

Heat tolerant maize: a solution for climate change-induced 360◦ water deficits

Written by Julian Bañuelos-Uribe on June 5, 2024. Posted in Blogs.

Seed company partners observe the performance of heat-tolerant hybrids in the dry heat of southern Karnataka, India. (Photo: CIMMYT)

Millions of smallholders in the Global South depend on maize, largely cultivated under rainfed conditions, for their own food security and livelihoods. Climate change mediated weather extremes, such as heat waves and frequent droughts, pose a major challenge to agricultural production, especially for rainfed crops like maize in the tropics.

“With both effects coming together under heat stress conditions, plants are surrounded, with no relief from the soil or the air,” said Pervez H. Zaidi, maize physiologist with CIMMYT’s Global Maize Program in Asia. “Climate change induced drought and heat stress results in a double-sided water deficit: supply-side drought due to depleted moisture in soils, and demand-side drought with decreased moisture in the surface air. “

Extreme weather events

Weather extremes have emerged as the major factor contributing to low productivity of the rainfed system in lowland tropics. South Asia is already experiencing soaring high temperatures (≥40^◦C), at least 5^◦C above the threshold limit for tropical maize and increased frequency of drought stress.

A woman agricultural officer discusses the performance of heat tolerant hybrids at farmers’ field in Raichur districts of Karnataka, India. (Photo: CIMMYT)

“In today’s warmer and drier climate, unless farmers have copious amounts of water (which might not be a sustainable choice for smallholders in the tropics) to not only meet the increased transpiration needs of the plants but also for increased evaporation to maintain necessary levels of humidity in the air, the climate change mediated weather extremes, such as heat and drought pose a major challenge to agricultural production, especially for rainfed crops like maize in lowland tropics,” said Zaidi.

To deal with emerging trends of unpredictable weather patterns with an increased number of warmer and drier days, new maize cultivars must combine high yield potential with tolerance to heat stress.

Maize designed to thrive in extreme weather conditions

CIMMYT’s Global Maize Program in South Asia, in partnership with public sector maize research institutes and private sector seed companies in the region, is implementing an intensive initiative for developing and deploying heat tolerant maize that combines high yield potential with resilience to heat and drought.

By integrating novel breeding and precision phenotyping tools and methods, new maize germplasm with enhanced levels of heat stress tolerance is being developed for lowland tropics. Over a decade of concerted efforts have resulted in over 50 elite heat stress tolerant, CIMMYT-derived maize hybrids licensed to public and private sector partners for varietal release, improved seed deployment, and scale-up.

Popular normal hybrids (left) & CAH153, a heat tolerant hybrid (right) under heat stress. (Photo: CIMMYT)

As of 2023, a total of 22 such high-yielding climate-adaptive maize (CAM) hybrids have been released by partners throughout South Asia. Through public-private partnerships, eight hybrids are being already deployed and scaled-up to over 100,000 hectares in Bangladesh, Bhutan, India, Nepal, and Pakistan. Also, the heat tolerant lines developed by CIMMYT in Asia were used by maize programs in sub-Saharan Africa for developing heat tolerant maize hybrids by crossing these as trait donors with their elite maize lines.

Studies on the new CAM hybrids show that while their yield is like existing normal maize hybrids under favorable conditions, the CAM hybrids outperform normal hybrids significantly under unfavorable weather conditions.

“The unique selling point of the new CAM hybrids is that they guarantee a minimum yield of at least 1.0 tons per hectare to smallholder farmers under unfavorable weather when most of the existing normal hybrids end-up with very poor yield,” said Subhas Raj Upadhyay, from the Lumbini Seed Company Ltd. in Nepal.

Given the superior performance of CAM seeds in stress conditions, Nepali farmers have expressed willingness to pay a premium price: an average of 71% more with government subsidy, or at least 19% extra without a subsidy for CAM seed. Similarly, the farmers in hot-dry areas of the Karnataka state of India are ready to pay 37% premium price for CAM seed compared to normal hybrid seed. These reports strongly validate the demand of CAM seed and therefore a targeted initiative is needed to accelerate deployment and scaling these seeds in climate-vulnerable marginal agroecologies in tropics.

Malawi faces a food crisis: why plans to avert hunger aren’t realistic and what can be done

Written by dmedina on June 5, 2024. Posted in In the media.

Malawi faces a severe food crisis due to droughts from El Niño, severely impacting the maize harvest. CIMMYT experts, including Mazvita Chiduwa, highlight that importing food is the only viable solution to prevent widespread hunger. Immediate donor support is essential to avert disaster and ensure food security for the country.

Read the full story.

Six new CIMMYT maize hybrids available from South Asia Breeding Program

Written by Julian Bañuelos-Uribe on June 4, 2024. Posted in News.

CIMMYT is happy to announce six new, improved tropical maize hybrids that are now available for uptake by public and private sector partners, especially those interested in marketing or disseminating hybrid maize seed across the tropical lowlands of South Asia and similar agroecologies in other regions. NARES and seed companies are hereby invited to apply for licenses to pursue national release, scale-up seed production, and deliver these maize hybrids to farming communities.

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

Product Profile	Newly available CIMMYT hybrids	*Basic traits*
South Asia Heat + Drought Tolerance (SAHDT)	CAH219	Medium maturing, yellow, high yielding, drought and heat tolerant, to FER and TLB
South Asia Heat + Drought Tolerance (SAHDT)	CAH220
South Asia Waterlogging + Drought Tolerance (SAWLDT)	CAH214	Medium maturing, yellow, high yielding, drought + waterlogging tolerant, and resistant to FER, TLB and FSR
South Asia Waterlogging + Drought Tolerance (SAWLDT)	CAH218
South Asia Drought Tolerance (SADT)	CAH216	Medium maturing, yellow, high yielding, drought tolerant, and resistant to TLB and FER
South Asia Drought Tolerance (SADT)	CAH217

Performance data	Download the CIMMYT-Asia Maize Regional On-Station (Stage 4) and On-Farm (Stage 5) Trials: Results of the 2022-2023 Seasons and Product Announcement from Dataverse.
How to apply	Visit CIMMYT’s maize product allocation page for details
Application deadline	The deadline to submit applications to be considered during the first round of allocations is 18 June 2024. Applications received after that deadline will be considered during subsequent rounds of product allocations.

The newly available CIMMYT maize hybrids were identified through rigorous, years-long trialing and a stage-gate advancement process which culminated in the 2023 South Asia Regional On-Farm Trials. The products were found to meet the stringent performance and farmer acceptance criteria for CIMMYT’s breeding pipelines that are designed to generate products tailored in particular for smallholder farmers in stress-prone agroecologies of South Asia.

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

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Enhancing maize seed and feed security

Written by Julian Bañuelos-Uribe on May 21, 2024. Posted in News.

Maize is the second most important cereal in Laos after rice, driven primarily by the demand for animal feed in neighboring countries such as China, Thailand, and Vietnam. Laos has an export-oriented maize sector, with most of the country’s production destined for these markets. The sector reached its peak in 2016, when production levels hit 6 metric tons per hectare across an area of 0.26 million hectares.

Over 90% of Laos’s maize production relies on rain-fed agriculture, with maize grain and stover serving as the primary source of feed for smallholder farmers who depend on mixed crop and livestock farming systems for their livelihoods. However, between 2016 and 2022, total maize area and production declined significantly, contracting by 64% and 70%, respectively. Several factors contributed to this decline, including volatile market prices, competition from cassava and other crops, rising production costs, and yield losses due to pests, diseases, and soil nutrient degradation because of monocropping.

Additionally, Laos relies on imported hybrid maize seed, primarily from Thailand and Vietnam, which creates a dependence on external suppliers and exposes farmers to price fluctuations. Recognizing the importance of improving maize productivity and sustainability, the Laotian government is taking steps to enhance local capacity for seed production and ensure access to affordable high-quality feed.

Enhancing local hybrid maize seed production

Recognizing the importance of enhancing the availability and accessibility of quality maize seed and feed, CIMMYT and Laos’s National Agriculture and Forestry Research Institute (NAFRI) have initiated the evaluation of high-yielding maize hybrids for both grain and stover quality. In 2023, 12 yellow-kernel maize hybrids developed by the CIMMYT-Asia breeding program underwent evaluation in Laos. The same set of hybrids is undergoing evaluation in 2024 to identify stable and suitable germplasm. According to Siviengkhek Phommalath, director of the rice and cash crop research center at NAFRI, the 2023 evaluation provided promising results, with at least two hybrids performing better or on par with widely grown commercial ones in Laos. These hybrids exhibit high productivity, particularly in terms of grain and stover quality. However, further validation is planned for 2024, with the introduction of additional testing sites to assess performance across various environments.

Following thorough evaluations across multiple years and environments, the most suitable dual-purpose maize hybrids will be allocated to NAFRI by CIMMYT along with their parental lines, to kickstart local seed production. However, the capacity of national partners needs to be strengthened to initiate local hybrid maize seed production effectively, and this necessitates the integration and coordination of efforts among all stakeholders in the seed and feed value chains in Laos.

Capacity building across seed and feed value chains

In response to the need for capacity building in local hybrid seed production and ensuring a consistent supply of high-quality seed and feed to Laotian smallholder farmers, NAFRI has collaborated with CIMMYT under the CGIAR Sustainable Intensification of Mixed Farming Systems (SIMFS), Seed Equal, and Plant Health Initiatives to organize an international training workshop on enhancing access to quality maize seed and feed in the crop-livestock farming system of Lao PDR, which took place from May 7-9, 2024.

The three-day interactive workshop, held in Vientiane, brought together 28 specialists from various organizations, including NAFRI, Souphanou Vong University, the Upland Agriculture Research Center (UARC), Provincial Agriculture and Forestry Offices (PAFO), as well as maize seed importers and grain traders from different provinces within the country.

The first day was dedicated to understanding the challenges and opportunities of the maize seed value chain. Participants were divided into three groups based on their practical backgrounds and invited to discuss challenges, stakeholder roles, and develop actionable recommendations for better coordination across value chains. This multi-stakeholder platform aimed to comprehend the challenges and opportunities of the crop-livestock farming nexus and integrate them into a more sustainable and productive system. It also served as a forum to promote synergistic partnerships among value-chain actors in enhancing local access to good quality seed and feed. The following days focused on various essential components of quality hybrid seed production, including understanding product profiles and market segments, realizing the economics of hybrid maize seed production, seed quality assurance, management of maize pests and diseases, and enhancing maize stover quality.

A collaborative approach

Workshop participants highlighted the challenges they face in acquiring maize seeds from external sources, citing inconsistent delivery times and limited availability of preferred varieties as factors that posed significant operational constraints. “The development of a competitive domestic maize seed system would ensure timely seed supply for farmers and save resources for the nation,” said Maisong Yodnuanchan, an agripreneur from Xiangkhouang province. His concerns resonated with fellow agripreneurs Bounmy Si and Teuang Sophapmixay, from Oudomxay and Hua Phan provinces, respectively, who both acknowledged the challenges associated with the current reliance on imported seeds and the potential benefits of a sustainable, locally produced seed supply.

CIMMYT and NAFRI open a workshop session. (Photo: NAFRI)

The training workshop offered valuable insights into addressing these concerns, providing a comprehensive overview of effective seed system development and the technical aspects of seed production applicable to a wide range of crops beyond maize. “This is the first ever training I received in my career and the knowledge gained will be directly applicable to my research activities at the UARC,” said researcher Malay Soukkhy. Recognizing the unique context of Laos compared to most of its neighboring countries with more established seed systems, AbduRahman Beshir, CIMMYT’s seed systems specialist for Asia and the lead trainer and facilitator for the workshop, emphasized the need for a collaborative approach to develop a custom solution for Laos. The workshop itself exemplified this collaborative spirit, incorporating a variety of engaging formats such as group discussions, lectures, assignments, and participant presentations. Subject matter specialists from CIMMYT offices in Nepal, India, and Kenya, as well as experts from Alliance Bioversity-CIAT and ILRI offices in Asia, shared valuable experiences applicable to Laos’s seed and feed systems.

Cementing partnerships

While addressing the participants, Timothy J. Krupnik, regional director for CIMMYT’s Sustainable Agrifood Systems Program in Asia, opened the workshop by acknowledging the invaluable support of NAFRI for organizing the event and collaborating under the CGIAR mixed farming initiative. He highlighted the imminent finalization of a Memorandum of Understanding (MoU) between CIMMYT and NAFRI, which will pave the way to further cement partnerships and establish a long term CIMMYT operations in Laos.

NAFRI’s Director General, Chanthakhone Bualaphan, presided over the workshop and emphasized the importance of continued collaboration between CIMMYT and NAFRI. Bualaphan requested CIMMYT’s continued focus on capacity building in Laos, encompassing both human resource development and institutional strengthening. She further highlighted the establishment of a specific target for domestic hybrid maize seed production, aligning with the government’s self-sufficiency goals. To translate plans into action, Bualaphan emphasized the need for future training programs to be more action-oriented and practical. She concluded by reiterating NAFRI’s unwavering support for CIMMYT’s expanded activities in Laos, with the ultimate objective of significantly improving the livelihoods of Laotian farmers. The workshop culminated with the presentation of certificates to participants and the development of a collaborative follow-up plan for deploying well-tailored maize germplasm within the mixed farming system of Laos.

New High-Yield Corn Variety Boosts Agricultural Productivity in Peru

Written by dmedina on May 15, 2024. Posted in In the media.

The introduction of the new high-yield corn variety, INIA 608 – ALLIMASARA, in Peru represents a significant collaboration between CIMMYT and the National Institute of Agricultural Innovation (INIA). This variety, developed through advanced crossbreeding techniques at the El Porvenir Agricultural Experimental Station, showcases CIMMYT’s pivotal role in enhancing agricultural productivity globally. By boosting yield capacities significantly up to 40% per hectare, this initiative not only supports the livelihoods of local farmers but also advances sustainable agricultural practices in challenging environmental conditions.

Read the full story.

Kenyan researchers release armyworm-resistant maize seeds

Written by dmedina on May 8, 2024. Posted in In the media.

Kenyan researchers at KALRO, in partnership with CIMMYT, have developed new maize varieties resistant to the fall armyworm, enhancing food security. These varieties, approved after rigorous testing, are expected to increase maize production. The development is supported by a $500,000 grant from CIMMYT, which also funds infrastructure improvements to aid in seed distribution.

Read the full story.

Eight new CIMMYT maize hybrids available from Eastern Africa breeding program

Written by Julian Bañuelos-Uribe on April 29, 2024. Posted in News.

CIMMYT is happy to announce eight new, improved tropical maize hybrids that are now available for uptake by public and private sector partners, especially those interested in marketing or disseminating hybrid maize seed across eastern Africa and similar agroecologies in other regions. NARES and seed companies are hereby invited to apply for licenses to pursue national release, scale-up seed production, and deliver these maize hybrids to farming communities.

Newly available CIMMYT hybrids	*Key traits*
CIM22EAPP1-01-08	Intermediate-maturing, white, high yielding, drought tolerant, NUE, and resistant to GLS, TLB, MSV, ear rots, and root & stalk lodging tolerance
CIM22EAPP1-01-16
CIM22EAPP1-02-02	Early maturing, white, high yielding, drought tolerant, NUE, and resistant to MLN, MSV, GLS, TLB, ear rots, and root & stalk lodging tolerance
CIM22EAPP1-02-09
CIM22EAPP1-02-18
CIM22EAPP2-03	Late maturing, white, high yielding, drought tolerant, NUE, and resistant to MSV, GLS, TLB, rust, ear rots, and root & stalk lodging tolerance
CIM22EAPP2-07
CIM21EAPP3-38	Late-maturing, high-yielding, white-grain maize hybrid bred for the highlands, with resistance to GLS, TLB, rust, ear rots, and root & stalk lodging tolerance

Performance data	Download CIMMYT Eastern Africa Maize Regional On-Station (Stage 4) and On-Farm (Stage 5) Trials: Results of the 2022 to 2023 Seasons and Product Announcement from Dataverse.
How to apply	Visit CIMMYT’s maize product allocation page for details.
Application deadline	The deadline to submit applications to be considered during the first round of allocations is 15 May 2024. Applications received after that deadline are still welcome but will be considered during subsequent rounds of product allocations.

The newly available CIMMYT maize hybrids were identified through rigorous, years-long trialing and a stage-gate advancement process which culminated in the 2023 Eastern Africa Regional On-Farm Trials. The products were found to meet the stringent performance and farmer acceptance criteria for CIMMYT’s breeding pipelines that are designed to generate products tailored in particular for smallholder farmers in stress-prone agroecologies of eastern Africa.

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Agricultural research adds billions of dollars to economy

Written by Sarah McLaughlin on April 12, 2024. Posted in Publications.

As the world searches for effective solutions to mitigate and adapt to climate change while navigating the cost-of-living crisis, delivering food security goals alongside robust economic value is more imperative than ever in agricultural research.

CGIAR plays a vital role in this mission, aiming to transform food, land, and water systems in collaboration with its 15 Research Centers, such as CIMMYT. Now, a new study published in World Development comprehensively analyzes CGIAR’s fiscal impact on global agricultural over nearly 60 years.

The economic impact of CGIAR-related crop technologies on agricultural productivity in developing countries, 1961–2020 suggests that adoption of these technologies equates to US $47 billion annually in economic benefits, with an overall economic benefit of US $1,334 billion for the years covered by the study.

Additionally, investment in productivity gains for staple crops in developing countries has aided entire populations by securing lower food prices and generating large local growth multipliers, thus achieving a greater impact on poverty reduction when compared to productivity growth in other sectors.

CIMMYT contributes 40% of total CGIAR varietal impact

At least 221 million hectares in at least 92 countries were occupied by CGIAR crop technologies in 2020. Between 2016 and 2020, CIMMYT maize varieties accounted for 24.5 million hectares (11%) of this figure, while CIMMYT wheat varieties made up almost 74 million hectares (33%).

An example of how these CIMMYT varieties impact farmers can be seen in sub-Saharan Africa, where using improved maize seed led to an overall average increase of 38.9% in yields to 1,104 kilograms per hectare (kg/ha), equal to an increase of 429 kg/ha. With increased yields come increased profits and employment security for farmers and their families.

The frequency with which technologies are upgraded also signifies the impact of agricultural research and development (R&D) on crop productivity and the economy. On the 221 million ha planting area, many farmers utilize second or third generation technologies. For example, average varietal generation in maize is estimated to be 1.1, meaning that 10% of farmers use a second-generation variety, and most wheat farmers were also using second or third generation modern varieties. This highlights that ongoing crop research continued to impact productivity, even when the size of the adoption area remained constant.

Expanding the impact

As CGIAR’s reach and capacity have grown, economic benefits are now apparent in an increased number of global regions compared to when its work began. Initially, most economic benefits came from wheat and rice farming in Asia; however, 30% of CGIAR crop technologies now occupy sub-Saharan Africa, generating a significant share of its impact. This region remains heavily reliant upon CGIAR-related varieties, so continued investment is encouraged to maintain and build on the positive outcomes achieved to date.

“Considering the urgent need to attain nutrition security, CIMMYT always seeks ways to assure global food systems,” said Bram Govaerts, director general of CIMMYT. “This thorough analysis is a strong validation of CIMMYT’s work and its significance not just for farmers and their immediate families, but for communities and generations into the future. Our collaborative partnerships with CGIAR Research Centers and National Agricultural Research Systems (NARS) are integral in delivering successful projects that enable smallholder farmers to maximize the potential of their land.”

While similar studies have been undertaken in the past, this work takes a unique approach by drawing on a wider range of evidence built on country- and crop-specific data, such as the adoption of crop improvement technologies and productivity impacts per hectare, thereby providing a more granular assessment of CGIAR’s economic inputs.

Read the full study: The economic impact of CGIAR-related crop technologies on agricultural productivity in developing countries, 1961–2020.

Seeds of change: one woman’s mission to transform her community

Written by Julian Bañuelos-Uribe on March 5, 2024. Posted in Features.

In the heart of Itumbula village in the Songwe district of Tanzania lives Venansia Swale, a farmer, mother, and community champion, who is turning the tide against food insecurity through the power of quality seeds. Swale has taken on the role of promoting improved seed in her community after experiencing firsthand the benefits of growing sorghum on her own farm with different seed.

“As a mother of five children, my biggest challenge is food shortage, and sorghum is our staple food,” said Swale. “Normally, I would harvest 450 kg from my three-acre farm, which isn’t enough for my family’s needs and leaves little surplus for selling. However, using quality seed this season, I harvested 990 kg. I’ve seen the benefits–not only can I feed my children for a year, but I can also earn income from the surplus.”

Swale positively impacts her village’s crop yields by championing delivery of quality seed. (Photo: CIMMYT)

Swale’s efforts began to extend beyond her own farm as she championed demand creation and consolidation in her village of Itumbula. She successfully created a demand of 574 kg, becoming her community’s sole distributor of quality sorghum seed. In the 2022-2023 season, she facilitated the supply of 134 kg of quality sorghum seed and 50 kg of quality maize seed.

So far, she has reached 300 farmers in partnership with CIMMYT and the Tanzania Agricultural Research Institute (TARI), sparking a transformative movement. One local farmer said, “As a community, we have come together to embrace quality seed, and Venansia has been at the forefront of this movement. Her dedication has significantly impacted food security.”

Despite being pregnant during the 2022 “Kizazi cha Mabadiliko” (the generation that will bring change) campaign, Swale remained unwavering in her determination and passion. She exemplifies the success of the Social and Behaviour Change interventions implemented by the Centre for Behaviour Change and Communication (CBCC).

The “Kizazi Cha Mabadiliko” campaign was developed and launched by CBCC in the Mbozi and Momba districts of Tanzania, aiming to increase awareness of the benefits of improved seeds. It was also designed to challenge negative perceptions and enhance motivation for participating in agricultural activities. The campaign underscores the importance of using improved seeds as a foundational element for a prosperous future in agriculture. The strategic design of the campaign ensures the efficient distribution of behavior change tools and materials, further demonstrating its impact through Swale’s inspiring example.

Sprouting new opportunities

Swale stands with some of her fellow choir members during the establishment of a demo plot at Itumbula. (Photo: CIMMYT)

Despite her impressive achievements, Swale remains forward-thinking. The village extension officer notes that while farmers have adopted improved seeds, poor farming practices persist, impacting yields. Inspired and invigorated, Swale plans to revolutionize her farming practices in the upcoming season, aiming for an even more significant impact.

Besides her role as a community champion, Swale is a member of the Sifa choir in her church. Leveraging her influence, she convinced nine fellow choir members to join the intervention, where they established and managed sorghum demonstration plots in their locality. The performance of quality seed inspired the choir to enlist as seed producers, and they secured two acres of land for seed production in the 2023- 2024 season.

Venansia’s vision goes beyond her own farm; she plans to produce seeds as part of the choir group and individually, allocating an acre for seed production and two acres for grain production. Hers is a story of personal triumph, showing the impact one person can have on an entire village, and a testament to the transformative power of community-led initiatives.

“The seeds we plant today will grow into a better tomorrow for all of us,” asserts Swale.

Product Design Teams (PDTs): A client-oriented approach to defining market segments and target product profiles

Written by Julian Bañuelos-Uribe on February 29, 2024. Posted in Blogs.

Participants from the Kenya PDT meeting held in Nairobi. (Photo: CIMMYT)

Product design teams (PDTs) are a CGIAR Accelerated Breeding Initiative innovation created to address the aforementioned challenges under the CGIAR-NARES partnership through coordinating SPMS and related TPPs. Each seed product market segment, which in the case of CGIAR is defined at sub-regional level, represents a unique set of requirements. Attached to the segment is a TPP which describes the ideal product to meet the requirements. Taken together, the framework provides a starting point for discussions by breeding teams on investment opportunities.

Discussions on market segments and TPPs need to develop over time as new insights are gained. Some requirements might be overlooked, and others may be emerging due to client requirements and changes in the context. There is a need for a greater understanding of the evolving requirements of the seed companies, farmers, processors, and consumers in the market segments that CGIAR serves. It must be recognized that not all requirements of farmers or consumers are amenable to breeding or efficient to incorporate in breeding pipelines – for example, some post-harvest losses or weed management can be best addressed by appropriate storage mechanisms and improved agronomic practices, respectively.

Product design teams (PDTs) were created to address the aforementioned challenges under the CGIAR-NARES partnership by and coordinating SPMS and related TPPs. A PDT is a group of crop breeding and seed systems stakeholders for a particular crop, who work together to design or redefine TPPs. PDTs have been envisioned to be cross-functional teams that meet annually with the following aims:

Review the market segments at subregional and national levels, addressing critical questions, such as:
- Do the subregional segments capture country-level requirements?
- What is the opportunity for impact from breeding investments across market segments?
- Are there important market segments that have not been captured?
- What are the potential future segments that the team needs to consider?
Review and update TPPs for each segment, addressing questions such as:
- Are any important traits missing?
- Are country-specific trait values factored?
- Are country-specific market-dominant varieties included in the market segment?
Discuss the needs for market intelligence for the PDT:
- Unknowns regarding client requirements.
- Gaps regarding product design parameters.

Director of the Global Maize program at CIMMYT, B.M. Prasanna, said, “PDT meetings serve as an important platform to understand the perspectives of diverse and relevant stakeholders. These discussions enable us to reach a common understanding of the current market requirements and redefine TPPs to reflect needs across value streams through co-creation and shared responsibility.”

The impact of PDTs

Pieter Rutsaert, seed systems specialist at CIMMYT and the CGIAR Market Intelligence Initiative, participated in several PDTs on maize and other crops, such as groundnut. “PDTs are a useful format to understand the unknowns in terms of farmer, processor, and consumer requirements and generate questions that guide future work in market intelligence,” said Rutsaert.

Product Design Team (PDT) meetings bring together breeding and seed systems stakeholders to improve understanding of country and regional needs for a specific crop. (Photo: CIMMYT)

“PDTs will help in routine review of the product requirement for a specific country and will help to remove breeder bias and ensure that all stakeholders’ views are heard and considered”, said Aparna Das, technical program manager for the Global Maize program at CIMMYT.

The main requirements for constituting PDTs for a specific country are:

A multidisciplinary team with 7 to 15 members, ensuring diversity of experience and providing reasonable time for decision-making.
Must consist of a range of stakeholders, such as: breeders from NARES (often the PDT convener/lead) and CGIAR; representatives of farmers’ groups, seed companies, and food processors; gender specialists; and market intelligence specialists.
30% of members should be female.
Should include a member from another crop breeding network, to bring a different perspective.

Bish Das, NARS coordinator, Dragan Milic, breeding specialist, and Lennin Musundire, breeding optimization specialist, from the CGIAR Accelerated Breeding Initiative team said, “Ultimately, the client-led approach to priority setting that CIMMYT’s Global Maize program is implementing in southern and eastern Africa ensures strong alignment with partners’ priorities and client requirements and better targeting of CGIAR regional maize breeding efforts.”

Case study: maize seed systems

CIMMYT’s Global Maize program has refined variety development to meet market needs across the value chain including farmers, processors, and consumers, thus enhancing variety adoption, which is the end goal of breeding pipelines. This has been implemented through the regional CGIAR-NARES-SMEs collaborative breeding networks and having ‘a bottom-up’ approach towards developing market segments and TPPs. This refers to building an understanding of end-users’ needs through inclusive in-country and regional stakeholder PDT meetings. PDTs also ensure that there are CGIAR-NARES-SME defined roles: a national mandate for NARES partners focusing on niche markets, the consolidated national mandate for CGIAR/NARES/SMEs, and a regional mandate for CGIAR Research Centers like CIMMYT.

In 2023, maize PDT teams were established and held meetings for five countries in eastern and southern Africa: Zambia, Ethiopia, Kenya, Zimbabwe, and Uganda. These meetings brought together stakeholders from different fields who play an important role in product development and seed systems (national partners and seed companies), varietal release (representatives from regulatory agencies) and end-product users (for example, millers).

The advantages of TDPs are emphasized by Godfrey Asea, director of Research and Daniel Bomet Kwemoi, maize breeder at the National Agricultural Research Organization (NARO) in Uganda. They highlighted that the NARO maize program has now begun a systematic journey toward modernizing its breeding program. The PDT team validated the country’s market segments and aligned five product profiles with two major target production environments (TPEs), with the mid-altitude regions taking 85% of the maize seed market and the highlands accounting for 15%. “These TPPs will be reviewed annually by the PDT since market segments tend to be dynamic. The breeding program has reclassified and aligned breeding the germplasm to TPPs, which will guide effective resource allocation based on the market shares,” said Asea.

Feedback on PDT meetings so far suggests positive experiences from stakeholders. Wendy Madzura, head of agronomy at SeedCo in Zimbabwe, said, “The unique PDT meeting held at CIMMYT in Zimbabwe provided a conducive environment for public and private stakeholders to have meaningful and honest discussions on the current market segments and TPPs.” Plans for continuous improvement are embedded in the PDT model. “As a follow-up to the PDT meeting, there is a need for further involvement of various stakeholders at the village, ward, and district levels to enable deeper insights and reach because the client needs are constantly changing,” said Madzura.

Building on fifty years of collaboration, a visit by Chinese politicians to CIMMYT in Mexico breeds new opportunities for tackling global agricultural challenges

Written by Sarah McLaughlin on February 19, 2024. Posted in News.

Tang Renjian, former governor of Gansu province, China, and current Minister of Agriculture and Rural Affairs and CIMMYT Director General, Bram Govaerts. (Photo: CIMMYT)

The Minister of Agriculture and Rural Affairs for China, Tang Renjian, visited CIMMYT headquarters on Thursday, 11 January, along with dignitaries from the Ministry of Agriculture and Rural Affairs (MARA) and the Embassy of China. Tang, the former governor of Gansu province in China, attended the site with the aim of building on collaborative scientific work between his country and CIMMYT through the Joint Laboratory for Maize and Wheat Improvement in China.

CIMMYT was delighted to host Tang to showcase the benefits of the CIMMYT-China relationship for wheat and maize, and to identify opportunities for sustained collaboration. The highly regarded minister was able to hear about work including genetic analysis service for agriculture and methods to close the gap between farmers and research, as well as to observe CIMMYT’s facilities and field experiments. The meeting laid the foundations for potential future CIMMYT-China projects in areas such as germplasm exchange, molecular breeding, climate-resilient technology, and training.

Bram Govaerts, director general of CIMMYT, said, “Showcasing our science to Tang is an exciting chance for CIMMYT and China to grow what is already a fruitful partnership, impacting millions of people globally.”

Exemplifying impactful global partnerships

Since 1974, the CIMMYT-China relationship has improved the lives of millions of people via numerous evidence-based scientific projects, with support from the Chinese Academy for Agricultural Sciences (CAAS). Through five decades of partnership, the collaboration has resulted in up to 10.7 million additional tons of wheat for China’s national output with a value of US $3.4 million.

CIMMYT’s contribution to China’s wheat and maize is significant. In terms of wheat, 26% of wheat grown in China has been derived from CIMMYT germplasm since the year 2000, with Chinese scientists adding more than 1,000 accessions to the CIMMYT gene bank. CIMMYT maize varieties have been planted on more than 1 million hectares in China, with the partnership responsible for the release of 13 commercial varieties.

Renjian and Chinese dignitaries tour CIMMYT’s museum. (Photo: CIMMYT)

In 2023, the Joint Wheat Molecular Breeding International Lab (Joint Lab) launched as a collaborative project between China, Pakistan, and CIMMYT, with the aim of developing new high yield wheat varieties and enhancing capacity for crop breeding and production.

More recently, scientists have played an important role in the free exchange of germplasm between China and countries in Africa, which will help to mitigate against any gene pool loss caused by climate-induced extreme weather events and enable the development of more resilient crop varieties.

Tang said, “Witnessing first-hand the work of CIMMYT’s scientists in Mexico is inspiring. We look forward to exploring further how we can build on the excellent relationship between China and CIMMYT to address global agricultural challenges.”

Govaerts said, “We hope that this partnership continues in order to address the need for nutritious crops and to develop innovative solutions for smallholder farmers.”

CIMMYT unveils 20 heat-resistant maize hybrids to combat climate change in South Asia

Written by dmedina on February 16, 2024. Posted in In the media.

CIMMYT has introduced 20 heat-resistant maize hybrids in South Asia, including Pakistan, to boost resilience against climate change and support smallholder farmers. This breakthrough, achieved after a decade of collaboration with regional research institutes and seed companies, aims to secure food supplies amid rising temperatures. Through initiatives like Pakistan’s Agricultural Innovation Programme, CIMMYT is committed to enhancing maize production and food security, showcasing the power of scientific innovation in addressing global agricultural challenges.

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Heat tolerant maize hybrids: a pursuit to strengthen food security in South Asia

Written by Julian Bañuelos-Uribe on February 2, 2024. Posted in Blogs.

After a decade of rigorous effort, CIMMYT, along with public-sector maize research institutes and private-sector seed companies in South Asia, have successfully developed and released 20 high-yielding heat-tolerant (HT) maize hybrids across Bangladesh, Bhutan, India, Nepal, and Pakistan. CIMMYT researchers used a combination of unique breeding tools and methods including genomics-assisted breeding, doubled haploidy (a speed-breeding approach where genotype is developed by chromosome doubling), field-based precision phenotyping, and trait-based selection to develop new maize germplasm that are high-yielding and also tolerant to heat and drought stresses.

While the first batch of five HT maize hybrids were released in 2017, by 2022 another 20 elite HT hybrids were released and eight varieties are deployed over 50,000 ha in the above countries.

In South Asia, maize is mainly grown as a rainfed crop and provides livelihoods for millions of smallholder farmers. Climate change-induced variability in weather conditions is one of the major reasons for year-to-year variation in global crop yields, including maize in Asia. It places at risk the food security and livelihood of farm families living in the stress-vulnerable lowland tropics. “South Asia is highly vulnerable to the detrimental effects of climate change, with its high population density, poverty, and low capacity to adapt. The region has been identified as one of the hotspots for climate change fueled by extreme events such as heat waves and intermittent droughts,” said Pervez H. Zaidi, principal scientist at CIMMYT.

Heat stress impairs the vegetative and reproductive growth of maize, starting from germination to grain filling. Heat stress alone, or in combination with drought, is projected to become a major production constraint for maize in the future. “If current trends persist until 2050, major food yields and food production capacity of South Asia will decrease significantly—by 17 percent for maize—due to climate change-induced heat and water stress,” explained Zaidi.

From breeding to improved seed delivery–the CIMMYT intervention

In the past, breeding for heat stress tolerance in maize was not accorded as high a priority in tropical maize breeding programs as other abiotic stresses such as drought, waterlogging, and low nitrogen in soil. However, in the last 12–15 years, heat stress tolerance has emerged as one of the key traits for CIMMYT’s maize breeding program, especially in the South Asian tropics. The two major factors behind this are increased frequency of weather extremes, including heat waves with prolonged dry period, and increasing demand for growing maize grain year-round.

At CIMMYT, systematic breeding for HT maize was initiated under Heat Stress Tolerant Maize for Asia (HTMA), a project funded by the United States Agency for International Development (USAID) Feed the Future program. The project was launched in 2013 in a public–private alliance mode, in collaboration with public-sector maize research institutions and private seed companies in Bangladesh, Bhutan, India, Nepal, and Pakistan.

The project leveraged the germplasm base and technical expertise of CIMMYT in breeding for abiotic stress tolerance, coupled with the research capacity and expertise of the partners. An array of activities was undertaken, including genetic dissection of traits associated with heat stress tolerance, development of new HT maize germplasm and experimental hybrids, evaluation of the improved hybrids across target populations of environments using a heat stress phenotyping network in South Asia, selection of elite maize hybrids for deployment, and finally scaling via public–private partnerships.

Delivery of HT maize hybrids to smallholder farmers in South Asia

After extensive testing and simultaneous assessment of hybrid seed production and other traits for commercial viability, the selected hybrids were officially released or registered for commercialization. Impact assessment of HT maize hybrid seed was conducted in targeted areas in India and Nepal. Studies showed farmers who adopted the HT varieties experienced significant gains under less-favorable weather conditions compared to farmers who did not.

Under favorable conditions the yield was on par with those of other hybrids. It was also demonstrated that HT hybrids provide guaranteed minimum yield (approx. 1 t ha^-1) under hot, dry unfavorable weather conditions. Adoption of new HT hybrids was comparatively high (19.5%) in women-headed households mainly because of the “stay-green” trait that provides green fodder in addition to grain yield, as women in these areas are largely responsible for arranging fodder for their livestock.

“Smallholder farmers who grow maize in stress vulnerable ecologies in the Tarai region of Nepal and Karnataka state in southern India expressed willingness to pay a premium price for HT hybrid seed compared to seed of other available hybrids in their areas,” said Atul Kulkarni, socioeconomist at CIMMYT in India.

Going forward–positioning and promoting the new hybrids are critical

A simulation study suggested that the use of HT varieties could reduce yield loss (relative to current maize varieties) by up to 36% and 93% by 2030 and by 33% and 86% by 2050 under irrigated and rainfed conditions respectively. CIMMYT’s work in South Asia demonstrates that combining high yields and heat-stress tolerance is difficult, but not impossible, if one adopts a systematic and targeted breeding strategy.

The present registration system in many countries does not adequately recognize the relevance of climate-resilience traits and the yield stability of new hybrids. With year-to-year variation in maize productivity due to weather extremes, yield stability is emerging as an important trait. It should become an integral parameter of the registration and release system.

Positioning and promoting new HT maize hybrids in climate-vulnerable agroecologies requires stronger public–private partnerships for increasing awareness, access, and affordability of HT maize seed to smallholder farmers. It is important to educate farming communities in climate-vulnerable regions that compared to normal hybrids the stress-resilient hybrids are superior under unfavorable conditions and at par with or even superior to the best commercial hybrids under favorable conditions.

For farmers to be able to easily access the new promising hybrids, intensive efforts are needed to develop and strengthen local seed production and value chains involving small-and medium-sized enterprises, farmers’ cooperatives, and public-sector seed enterprises. These combined efforts will lead to wider dissemination of climate-resilient crop varieties to smallholder farmers and ensure global food security.

Siman hybrid: revolutionizing maize farming for prosperity in Somalia

Written by dmedina on January 31, 2024. Posted in In the media.

In a significant breakthrough for Somalia’s agriculture, Filsan Seed Company and CIMMYT have introduced Siman, a high-yielding hybrid maize. Developed under CIMMYT’s Stress Tolerant Maize for Africa program, Siman marks a new era of enhanced productivity and food security in Somalia. Stay tuned for more on this game-changing agricultural innovation.

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