In 2018, CIMMYT continued to innovate and forge strategic alliances to combat malnutrition, tackle the effects of climate change and respond to emerging threats.
Building on the release of a new wheat genome reference map, our researchers more precisely tagged genes for valuable traits, including disease resistance, heat tolerance, and grain quality, in more than 40,000 CIMMYT wheat lines.
In collaboration with our partners, CIMMYT released 81 maize and 48 wheat varieties. More than 40,000 farmers, scientists and technical workers across the world took part in over 1,500 training and capacity development activities. CIMMYT researchers published 338 journal articles.
As the maize-hungry fall armyworm spreads from Africa to Southeast Asia, CIMMYT joined with more than 40 partners in an international consortium to advance research against the devastating insect pest.
CIMMYT used a scaling approach to extend the benefits of crop research to more farmers and consumers in developing countries in transformative and lasting ways. Smallholder farmers in Mexico, Pakistan and Zimbabwe are benefitting from the use of appropriate machinery and implements for efficient and climate-smart agriculture. A manual developed with the Food and Agriculture Organization (FAO) of the United Nations offers technical and business advice for local entrepreneurs offering mechanized services, such as sowing or threshing, to smallholder farmers.
As part of taste tests in Ethiopia, Kenya, and Tanzania, consumers indicated their willingness to pay a premium for quality protein maize (QPM), which contains enhanced levels of the amino acids needed to synthesize protein.
A CIMMYT-led study on gender has explored the lives and viewpoints of 7,500 men and women from farming communities in 26 countries, providing invaluable information that will lead to better productivity and food security.
2018 showed us that the passion and values of staff and partners help CIMMYT to have major impact on the livelihoods of smallholders and the poor. This Annual Report pays tribute to them.
In 2018, CIMMYT continued to innovate and forge strategic alliances to combat malnutrition, tackle the effects of climate change and respond to emerging threats.
Margaret R. Bath joined CIMMYT’s Board of Trustees in 2019. She is a CEO with a strong background in research and development (R&D) and quality systems in food.
Bath spent seventeen years with the Kellogg Company, including over twelve years as Chief Technology Officer. In that role, she globalized the company’s R&D and quality network. During her tenure, global staff increased by almost 50% to over 900 professionals and the operating budget increased by approximately 20%. During her last six years at the Kellogg Company, six new R&D centers were opened, four of them in emerging markets. This globalization led to broader access of talent, external knowledge and new technologies, thereby strengthening the company’s entire global network, yielding stronger ideas, and speed to market.
Prior to joining the Kellogg Company in 2000, she spent several years at PepsiCo’s Frito Lay division, where she held positions of progressive responsibility in R&D.
Currently, as Founder & Managing Partner at Strong Harbor, LLC — a consultancy helping food companies with R&D and quality challenges — Bath is focused on bringing unique technology and regulatory insights to others in the consumer goods industry.
Throughout her career, Bath has served on the boards of several non-profit organizations. She is currently serving on the boards of directors at EIT Food, the International Food Protection Training Institute (IFPTI) and Monnell Chemical Senses.
Bath holds a Bachelor of Science degree in Food Science from the University of Maryland, United States, and an Honorary Doctorate in Bioscience Engineering from the Katholieke University in Leuven, Belgium.
Francelino Rodrigues prepares an UAV for radiometric calibration for multispectral flight over a maize tar spot complex screening trial at CIMMYT’s Agua Fría experimental station, Mexico. (Photo: Alexander Loladze/CIMMYT)
A new study from researchers at the International Maize and Wheat Improvement Center (CIMMYT) shows that remote sensing can speed up and improve the effectiveness of disease assessment in experimental maize plots, a process known as phenotyping.
The study constitutes the first time that unmanned aerial vehicles (UAVs, commonly known as drones) with cameras that capture non-visible electromagnetic radiation were used to assess tar spot complex on maize.
The interdisciplinary team found among other things that potential yield losses under heavy tar spot complex infections could reach 58% — more than 10% greater than reported in previous studies.
Caused by the interaction of two fungal pathogens that thrive in warm, humid conditions, tar spot complex is diagnosed by the telltale black spots that cover infected plants. (Photo: Alexander Loladze/CIMMYT)
“Plant disease resistance assessment in the field is becoming difficult because breeders’ trials are larger, are conducted at multiple locations, and there is a lack of personnel trained to evaluate diseases,” said Francelino Rodrigues, CIMMYT precision agriculture specialist and co-lead author of the study. “In addition, disease scoring based on visual assessments can vary from person to person.”
A major foliar disease that affects maize throughout Latin America, tar spot complex results from the interaction of two species of fungus that thrive in warm, humid conditions. The disease causes telltale black spots on infected plants, killing leaves, weakening the plant, and impairing ear development.
Phenotyping has traditionally involved breeders walking through crop plots and visually assessing each plant, a labor-intensive and time-consuming process. As remote sensing technologies become more accessible and affordable, scientists are applying them more often to assess experimental plants for desired agronomic or physical traits, according to Rodrigues, who said they can facilitate accurate, high-throughput phenotyping for resistance to foliar diseases in maize and help reduce the cost and time of developing improved maize germplasm.
“To phenotype maize for resistance to foliar diseases, highly trained personnel must spend hours in the field to complete visual crop evaluations, which requires substantial time and resources and may result in biased or inaccurate results between surveyors,” said Rodrigues. “The use of UAVs to gather multispectral and thermal images allows researchers to cut down the time and expenses of evaluations, and perhaps in the future it could also improve accuracy.”
Color-infrared image of maize hybrids in the experimental trials under fungicide treatment (A1) and non-fungicide treatment (A2) of tar spot complex of maize. Image data were extracted from two polygons from the two central rows in each plot (B).
Technology sheds new light on phenotyping
Receptors in the human eye detect a limited range of wavelengths in the electromagnetic spectrum — the area we call visible light — consisting of three bands that our eyes perceive as red, green and blue. The colors we see are the combination of the three bands of visible light that an object reflects.
Remote sensing takes advantage of how the surface of a leaf differentially absorbs, transmits and reflects light or other electromagnetic radiation, depending on its composition and condition. The reflectance of diseased plant tissue is different from that of healthy ones, provided the plants are not stressed by other factors, such as heat, drought or nutrient deficiencies.
In this study, researchers planted 25 tropical and subtropical maize hybrids of known agronomic performance and resistance to tar spot complex at CIMMYT’s experimental station in Agua Fría, central Mexico. They then carried out disease assessments by eye and gathered multispectral and thermal imagery of the plots.
This allowed them to compare remote sensing with traditional phenotyping methods. Calculations revealed a strong relationship between grain yield, canopy temperature, vegetation indices and the visual assessment.
Future applications
“The results of the study suggest that remote sensing could be used as an alternative method for assessment of disease resistance in large-scale maize trials,” said Rodrigues. “It could also be used to calculate potential losses due to tar spot complex.”
Accelerated breeding for agriculturally relevant crop traits is fundamental to the development of improved varieties that can face mounting global agricultural threats. It is likely that remote sensing technologies will have a critical role to play in overcoming these challenges.
“An important future area of research encompasses pre-symptomatic detection of diseases in maize,” explained Rodrigues. “If successful, such early detection would allow appropriate disease management interventions before the development of severe epidemics. Nevertheless, we still have a lot of work to do to fully integrate remote sensing into the breeding process and to transfer the technology into farmers’ fields.”
Funding for this research was provided by the CGIAR Research Program on Maize (MAIZE).
How food is produced, consumed, and how much is lost or wasted shapes the health of both people and planet. The EAT-Lancet Commission report, released in January 2019, brought together 30 interdisciplinary scientists from across the globe to propose a dietary pattern that meets nutritional requirements and promotes health but uses less environmental resources.
The report promotes diets consisting of a variety of plant-based foods, with low amounts of animal-based foods, refined grains, highly processed foods or added sugars, and with unsaturated rather than saturated fats.
The EAT Food Forum 2019 is taking place in Stockholm June 11-14, 2019. Natalia Palacios, maize quality specialist at the International Maize and Wheat Improvement Center (CIMMYT), will participate in a panel of agricultural research experts organized by CGIAR which will explore the implications of the EAT-Lancet report in the Global South, particularly for small farmers.
Palacios and her CIMMYT colleagues Santiago Lopez Ridaura, agronomist, and Jason Donovan, socioeconomist, got together for a conversation with CIMMYT editors to analyze how EAT-Lancet recommendations adapt to smallholder farmers’ realities.
Can nutrition bring the food system together?
Santiago Lopez Ridaura: Nutrition is the perfect setting to create system approaches to food. Nutrition involves everything: production quality, the genetics of the seed, input supply, output demand, as well as the purchasing power of farmers, dietary and cooking habits. It truly requires an interdisciplinary approach to look at food systems through a nutrition lens.
Natalia Palacios: We must stop thinking about the crop and think about the diet. Interdisciplinary and inter-institutional research is key to improve nutrition and agricultural sustainability in the context of smallholder farmers in Africa, Asia and Latin America.
Lopez-Ridaura: An economic analysis, a soil fertility study, or pest and disease breeding alone does not give us a holistic view of the food system. However, nutrition gives us the opportunity to have an integrated view. Equally, sustainability and avoiding food loss relate to all parts of the food system.
It’s a synergy of things. CIMMYT has been advocating for a systems approach to maize and wheat farming and nutrition, and sustainability fits right in with this.
Jason Donovan: It’s time to develop that dialogue, including specialists from different fields such as nutritionists, economists, agronomists, breeders and gender specialists when we investigate and form research questions on the health benefits and sustainability of our food systems and take holistic view of how all these things come together.
Palacios: A shift in our priority research is needed. It is important to integrate resilient production with nutrition. Focus only on productivity should no longer be the driver. We might not need big changes in the technologies and interventions, but we need to make sure nutrition and consumer demands are included.
There is no silver-bullet solution. You need to take action from different points, whether it is biofortified crops, intercropping for diversified diets or access to markets.
Is the EAT-Lancet report a recipe for a planetary diet?
Palacios: The report takes a global focus and is overwhelmingly targeted at high income nations. However, if we look at its five strategies, they are actually applicable for low- and middle-income countries as well: Seek international and national commitment to shift toward healthy diets; reorient agricultural priorities from producing high quantities of food to producing healthy food; sustainably intensify food production to increase high-quality output; strong and coordinated governance of land and oceans; and halve food losses at the production side and food waste at the consumption side.
CIMMYT scientists Natalia Palacios (left), Santiago Lopez-Ridaura (center) and Jason Donovan discuss the implications of a “planetary health diet” for producers and consumers in low- and middle-income countries. (Photo: Alfonso Cortés/CIMMYT)
Lopez-Ridaura: Rather than a recipe, the commission proposes a “reference healthy diet” that will need to be adapted to different regions and cultures. More importantly, the trajectories towards such diet will probably be very different, depending on the region and culture, the current dietary habits of the population, and the production systems they are based on.
In some cases, consumption of meat and sugars will need to decrease, but in other regions it might need to be increased. It all depends on the current situation.
Donovan: The report highlighted the sustainability issues around our food production. Although it was focused toward high-income countries who consume a lot of proteins. One of the big questions I had after reading it was the “how” question. In a lot of countries where we work — in Africa, Asia and Latin America — the consumption of meat is increasing at a rapid pace.
So, the question that struck me was how do these societies with fast rural and urban transformations, and an increasing taste for animal-based food products, fit into the context of the report? How can we promote plant-based diets in these contexts?
Adjusting their diets towards a universal healthy reference diet would be difficult as there is little room for maneuver.
Is adaptation the key to success?
Lopez-Ridaura: Yes, adaptation is needed and I think the EAT-Lancet Commission colleagues are well aware of that. The healthy reference diet needs to be seen as such, as a reference, with some basic principles regarding food quantity and quality as well as sustainable use of resources.
Each region, sub-region or even families and individuals will need to adapt their dietary habits and production systems in order to attain healthy diets and halt the degradation of the resource base.
Palacios: It is important to look at smallholder farmers in the context of diet and sustainable agriculture. We need to ask, what are they growing? How are they growing it? How are they eating it? What do they sell?
Quite often smallholder farmers are already using agricultural practices that improve their nutrition and benefit the environment. For example, look at the milpa farm system: it combines maize, beans, squash, chili, tomatoes and seasonal fruits to provide a diverse plant-based diet. The milpa system, combined with crop residue retention and other conservation agriculture techniques can improve soil fertility.
It is important that these initiatives are promoted through national and local government policy and supported by the private sector if they are to have real impact on the health of people and the planet.
Donovan: Local policies to promote healthy diets and diversification in the field are being put in place — Latin America is a good example. However, this is not at a scale where it can have real impact on the health of people and environments. There is pressure on the private sector to respond, especially considering the increasing consumption of processed foods. It is important to engage with the private sector on issues of nutrition and sustainability.
Solutions will be at multiple levels when we look at nutrition and food systems. Too often the actors in a food system act alone, for example many NGOs, universities, and government programs. There needs to be unity in action — players need to work together as creators of holistic solutions. This is currently a gap, as many nutritionists do not look at agriculture or food systems. Addressing this can have a significant impact on the health of family farmers in Africa, Asia and Latin America.
Lennart Woltering is helping colleagues achieve more and lasting impact with their work. By finding practical applications for complex theories on scaling, he has been able to support project teams in formulating scaling ambitions, help provide clarity on what an “enabling environment” for an innovation means, and create a realistic picture of what a project can and cannot address and where strategic collaboration is required to exert influence.
Prior to joining CIMMYT, Woltering worked for ICRISAT in Niger (2005-2010) on local adaptation of innovations. From 2010-2016 he worked for a management consulting firm designing, implementing and backstopping projects for international donors.
In 2017, a call for proposals from Copernicus Climate Change Service Sectoral Information Systems led the International Maize and Wheat Improvement Center (CIMMYT to collaborate with Wageningen University, the European Space Agency (ESA), and other research and meteorological organizations to develop practical applications in agricultural and food security for satellite-sourced weather data.
The project, which recently ended, opened the door to a wide variety of potential uses for this highly detailed data.
ESA collects extremely granular data on weather, churned out at an hourly rate. CIMMYT researchers, including Foresight Specialist Gideon Kruseman, reviewed this data stream, which generates 22 variables of daily and sub-daily weather data at a 30-kilometerlevel of accuracy, and evaluated how it could help generate agriculture-specific weather and climate data sets.
“For most people, the reaction would be, ‘What do we do with this?’ Kruseman said. “For us, this is a gold mine.”
For example, wind speed — an important variable collected by ESA satellites — is key for analyzing plant evaporation rates, and thus their drought tolerance. In addition, to date, information is available on ideal ago-climatic zones for various crop varieties, but there is no data on the actual weather conditions during a particular growing season for most sites.
By incorporating the information from the data sets into field trial data, CIMMYT researchers can specifically analyze maize and wheat cropping systems on a larger scale and create crop models with higher precision, meaning that much more accurate information can be generated from the trials of different crop varieties.
The currently available historic daily and sub-daily data, dating back to 1979, will allow CIMMYT and its partners to conduct “genotype by environment (GxE)” interaction analysis in much higher detail. For example, it will allow researchers to detect side effects related to droughts and heat waves and the tolerance of maize and wheat lines to those stresses. This will help breeders create specific crop varieties for farmers in environments where the impact of climate change is predicted to be more apparent in the near future.
“The data from this project has great potential fix this gap in information so that farmers can eventually receive more targeted assistance,” said Kruseman.
These ideas are just the beginning of the agricultural research and food security potential of the ESA data. For example, Kruseman would like to link the data to household surveys to review the relationship between the weather farmers experience and the farming decisions they make.
By the end of 2019, the data will live on an open access, user-friendly database. Eventually, space agency-sourced weather data from as far back as 1951 to as recent as five days ago will be available to researchers and weather enthusiasts alike.
Already CIMMYT scientists are using this data to understand the potential of a promising wheat line, for seasonal forecasting, to analyze gene-bank accessions and for a statistical analysis of maize trials, with many more high-impact applications expected in the future.
Family farmers produce more than 80% of the world’s food, but often have the least amount of access to support.
As the UN Decade of Family Farming launched on May 29, 2019, I talked with Trevor Nicholls, CEO of the Centre for Agriculture and Bioscience International (CABI), on this topic.
On an article published on the Economist Intelligence Unit’s Food Sustainability Index blog, we propose six key actions that can help family farmers thrive in the coming decade:
Invest in women and youth: Make family farming work for all
Attract young farmers into tech-smart farming
Make climate-resilient crops more accessible
Share practical plant health advice with family farmers
Help family farmers diversify and grow more from less land
Translate national and global goals into practical farming support
TEXCOCO, Mexico (CIMMYT) — More nutritious crop varieties developed and spread through a unique global science partnership are offering enhanced nutrition for hundreds of millions of people whose diets depend heavily on staple crops such as maize and wheat, according to a new studyin the science journal Cereal Foods World.
From work begun in the late 1990s and supported by numerous national research organizations and scaling partners, more than 60 maize and wheat varieties whose grain features enhanced levels of zinc or provitamin A have been released to farmers and consumers in 19 countries of Africa, Asia, and Latin America over the last 7 years. All were developed using conventional cross-breeding.
Farmer and consumer interest has grown for some 60 maize and wheat varieties whose grain features enhanced levels of the essential micronutrients zinc and provitamin A, developed and promoted through collaborations of CIMMYT, HarvestPlus, and partners in 19 countries (Map: Sam Storr/CIMMYT).
“The varieties are spreading among smallholder farmers and households in areas where diets often lack these essential micronutrients, because people cannot afford diverse foods and depend heavily on dishes made from staple crops,” said Natalia Palacios, maize nutrition quality specialist at the International Maize and Wheat Improvement Center (CIMMYT) and co-author of the study.
More than 2 billion people worldwide suffer from “hidden hunger,” wherein they fail to obtain enough of such micronutrients from the foods they eat and suffer serious ailments including poor vision, vomiting, and diarrhea, especially in children, according to Wolfgang Pfeiffer, co-author of the study and head of research, development, delivery, and commercialization of biofortified crops at the CGIAR program known as “HarvestPlus.”
“Biofortification — the development of micronutrient-dense staple crops using traditional breeding and modern biotechnology — is a promising approach to improve nutrition, as part of an integrated, food systems strategy,” said Pfeiffer, noting that HarvestPlus, CIMMYT, and the International Institute of Tropical Agriculture (IITA) are catalyzing the creation and global spread of biofortified maize and wheat.
“Eating provitamin A maize has been shown to be as effective as taking Vitamin A supplements,” he explained, “and a 2018 study in India found that using zinc-biofortified wheat to prepare traditional foods can significantly improve children’s health.”
Six biofortified wheat varieties released in India and Pakistan feature grain with 6–12 parts per million more zinc than is found traditional wheat, as well as drought tolerance and resistance to locally important wheat diseases, said Velu Govindan, a breeder who leads CIMMYT’s work on biofortified wheat and co-authored the study.
“Through dozens of public–private partnerships and farmer participatory trials, we’re testing and promoting high-zinc wheat varieties in Afghanistan, Ethiopia, Nepal, Rwanda, and Zimbabwe,” Govindan said. “CIMMYT is also seeking funding to make high-zinc grain a core trait in all its breeding lines.”
Pfeiffer said that partners in this effort are promoting the full integration of biofortified maize and wheat varieties into research, policy, and food value chains. “Communications and raising awareness about biofortified crops are key to our work.”
For more information or interviews, contact:
Mike Listman Communications Consultant
International Maize and Wheat Improvement Center (CIMMYT)
m.listman@cgiar.org, +52 (1595) 957 3490
Jelle Van Loon is an agricultural engineer with a PhD in biosystems modelling, and over a decade of experience in agricultural research for development in Latin America. He currently serves as Associate Director for Latin America of CIMMYT’s Sustainable Agrifood System Program, leading research initiatives aimed at building pathways towards resilient food systems and long-term rural development. Leading the innovations for development team, he coordinates a transdisciplinary team, including aspects like farmers market linkages and responsible sourcing, capacity development, and community-based outreach and explores the multiple interfaces between adaption, adoption and scaling from a socio-technical viewpoint in research for agricultural development.
In addition, Jelle has ample expertise in scale-appropriate mechanization from smallholder farm solutions to precision agriculture applications, has actively progressed to work in innovation systems thinking, and in addition he serves CIMMYT as representative for Latin America in which he focusses this line of work to establish impactful partnerships and innovative business models.
In November 2015, Jelle Van Loon set off for Zimbabwe, with a cross-section plan in his backpack. He spent two weeks working with a group of blacksmiths, searching Harare for parts and assembling machines in a bid to test whether the construction plans developed by his team were indeed designed to be built anywhere. “We might have had to change a few things, but three working machines were built, proving the accessibility of the construction plans and inherent replicability of the designs.”
From studying agronomic engineering and crop modelling in Belgium to working on supply chain issues in Peru, Jelle Van Loon amassed a range of experience before joining the International Maize and Wheat Improvement Center (CIMMYT) in 2012. Soon after joining, he began shaping up a team to work on mechanization issues.
“First and foremost I’m an agricultural engineer; I just happen to have a high affinity with mechanics,” he says. “I think my advantage is having a broad knowledge, being able to understand agronomy as well as mechanical engineering, and having studied agricultural economics in developing countries.”
This background has served him well in a role where a hands-on, multidisciplinary approach is crucial.
“Mechanization doesn’t necessarily mean building or creating more machines,” Van Loon explains, “but rather introducing technology and farm equipment to farmers to facilitate their work, as well as supporting them on how and when to use it to increase production efficiency.” Many people also assume that mechanization only involves motorized equipment such as tractors, he adds, when in fact any tool, even simple hand tools, which facilitate farmer work and alleviate drudgery fit into this concept.
CIMMYT’s mechanization team carries out research and development on a range of farm equipment. Team members draw and design prototypes, test them in the field and develop protocols for experiments. Combining agronomy and mechanics, they work to create machinery that supports farmers in their day-to-day work at each stage of the crop cycle: from land preparation, planting and fertilization, to harvest and shelling. They also support the generation of new business models which can deliver appropriate machinery to farmers working within resilient agri-food systems.
Welcome to the machine
One of the biggest challenges is changing the way farmers work. Many are resistant to investing in new machinery because they are unsure of how to use it, and simply cannot afford the risk of failure. As such, the team also places an emphasis on extension work. They have set up centers where growers can learn about the equipment and rent out some model machines. They also build the capacity of service providers through training on functional engineering for blacksmiths and manufacturers, and market intelligence for small sector entrepreneurs.
“It’s beyond just designing the machine. It’s really about taking products out to the field, seeing what works well and where, and then thinking about how we can get these products into the hands of farmers.”
Building on the work being carried out in Mexico, Van Loon is always looking at how other regions can also benefit from the mechanization unit and opportunities for collaborating with colleagues and partners in Africa and Asia. Equipment developed for farmers in Africa or Latin America could be adapted for use in South Asia or vice versa, but this requires a solid understanding of each region’s unique opportunities and challenges.
He points to the example of the two-wheel tractor engine, developed in China and popularized in Asia during the 1980s, when famine and the loss of draft animals prompted governments to subsidize that particular piece of equipment at the right time. The tractor is ubiquitous in countries such as Bangladesh, but it is unclear whether the same success is replicable in Africa and Latin America, neither of which has the same conditions, second-hand markets or import facilities. “We’re trying to learn from cross-regional efforts to scale up. Being able to understand different areas helps us find the weakest links and create more enabling environments,” Van Loon explains.
He and his team are continuously developing and evaluating new ideas, trialing ways of embedding mechatronics or sensory-based technology into their machines to help capture data and ease farmer workloads. Finding a way to keep these low-cost and convenient for farmer use may be a challenge, but positive testimonials from farmers keep him excited about the possibilities.
“I think it’s worthwhile to follow through on wild new ideas and see what happens because when it works out, the positive impact and change we help create is all that matters,” Van Loon notes.
“And more so, the cool thing about working in mechanization is we can go as far as our creativity lets us.”
Jelle Van Loon demonstrates machinery for visitors at CIMMYT’s global headquarters in Mexico. (Photo: Gerardo Mejía/CIMMYT)
CIMMYT field workers working on wheat crossing as part of the breeding process. (Photo: CIMMYT)
In early 2019, an article published by European climate researchers in the Proceedings of the National Academy of Science (PNAS) journal questioned the climate resilience of modern wheat varieties. The article suggested that modern wheat varieties showed reduced climate resilience as a direct result of modern breeding methods and practices, a claim that researchers at the International Maize and Wheat Improvement Center (CIMMYT) vehemently rebuke.
In a rebuttal letter published in the June issue of PNASa group of scientists, including CIMMYT’s Susanne Dreisigacker and Sarah Hearne, strongly contradict the finding that breeding has reduced climate resilience in European wheat, citing significant flaws in the authors’ methodology, data analyses and interpretation.
“This article discredits European plant breeders and wheat breeders in general, who have been working over many decades to produce a wide range of regionally adapted, stable varieties which perform well under a broad range of climate change conditions,” said CIMMYT wheat molecular geneticist Susanne Dreisigacker.
Among other flaws, they found a number of omissions and inconsistencies.
The article shows a lack of understanding of commonly used terms and principles of breeding theory, criticizing newer wheat varieties for demonstrating a decrease in “climatic response diversity.” Less diversity in wheat response — that is, more stable yields despite the influence of climate change — is a benefit, not a threat, to farmers.
The article authors contradict the common knowledge among farmers and plant breeders that new elite wheat varieties are generally more productive than older varieties; new cultivars are only approved if they show added value in direct comparison to existing varieties.
The article’s claim of long-term losses of climate resilience in “European wheat” is unsubstantiated. The authors extensively used data from three small countries — the Czech Republic, Denmark and Slovakia — which contribute less than five percent of Europe’s wheat supply. Three of the five most important wheat producers in Europe — Russia, Ukraine and the United Kingdom — were not accounted for in the analysis.
The authors failed to report the actual wheat yields in their study, neglected to publish the underlying data with the manuscript and have up to now declined requests to make the data available.
Europe is one of the world’s major wheat producers and threats to its wheat production due to climate change would have serious consequences for world’s food security. Luckily, say the scientists who published the rebuttal letter, this fear is unfounded.
“Wheat producers and bread consumers around the world will be relieved to learn that breeders have not ignored climate change after all,” said letter lead-author Rod Snowdon, from the Department of Plant Breeding at Justus Liebig University of Giessen, Germany.
The full rebuttal letter by 19 international plant breeders, agronomists and scientists, is available on the PNAS site and reprinted in its entirety below.
Reduced response diversity does not negatively impact wheat climate resilience
Kahiluoto et al. (1) assert that climate resilience in European wheat has declined due to current breeding practices. To support this alarming claim, the authors report yield variance data indicating increasingly homogeneous responses to climatic fluctuations in modern wheat cultivars. They evaluated “response diversity,” a measure of responses to environmental change among different species jointly contributing to ecosystem functions (2). We question the suitability of this measure to describe agronomic fitness in single-cultivar wheat cropping systems. Conclusions are made about “long-term trends,” which in fact span data from barely a decade, corresponding to the duration of a single wheat breeding cycle. The authors furthermore acknowledge increasing climate variability during the study period, confounding their analysis of climate response in the same time span.
The underlying data are not published with the manuscript. Thus, the assertion that there is “no inherent trade-off between yield potential and diversity in weather responses” (1) cannot be verified. Inexplicably, the analysis and conclusions ignore absolute yields, which increase over time through breeding (3–6). Furthermore, incompatible data from completely different ecogeographical forms and species of wheat are apparently considered together, and the dataset is strongly biased toward a few small countries with minimal wheat production and narrow agroclimatic gradients.
The study assumes that increased response diversity among different cultivars is associated with yield stability. In contrast, the common, agronomic definition of yield stability refers to the ability of a single cultivar to stably perform well in diverse environments, without excessive responses to fluctuating conditions. Response diversity measures that ignore absolute yield do not support statements about food security or financial returns to farmers.
Cultivar yield potential, stability, and adaptation are enhanced by multienvironment selection over long breeding time frames, encompassing climate fluctuations and a multitude of other relevant environmental variables. Translation to on-farm productivity is promoted by national registration trials and extensive, postregistration regional variety trials in diverse environments. The unsurprising conclusion that planting multiple cultivars enhances overall production stability mirrors longstanding farming recommendations and practice (7). The availability of robust performance data from a broad range of high-performing cultivars enables European farmers to manage their production and income risks.
Kahiluoto et al. (1) speculate about “genetic erosion” of modern cultivars due to a “lack of incentives for breeders to introduce divergent material.” To substantiate these claims, the authors cite inadequate genetic data from non-European durum wheat (8), while explicitly dismissing clearly opposing findings about genetic diversity in European bread wheat (9). Short-term reductions in response diversity in five countries were misleadingly reported as a “long-term decline” in climate resilience in “most European countries,” although six out of seven countries with sufficient data showed no long-term decline. The article from Kahiluoto et al. and the misrepresentation of its results distorts decades of rigorous, successful breeding for yield potential and stability in European wheat and misleads farmers with pronouncements that are not supported by relevant data.
References:
1 H. Kahiluoto et al., Decline in climate resilience of European wheat. Proc. Natl. Acad. Sci. USA 116, 123–128 (2019).
2 T. Elmqvist et al., Response diversity, ecosystem change, and resilience. Front. Ecol. Environ.1, 488–494 (2003).
3 S. De Schepper, M. De Loose, E. Van Bockstaele, P. Debergh, Ploidy analysis of azalea flower colour sports. Meded. Rijksuniv. Gent. Fak. Landbouwkd. Toegep. Biol. Wet.66, 447–449 (2001).
4 I. Mackay et al., Reanalyses of the historical series of UK variety trials to quantify the contributions of genetic and environmental factors to trends and variability in yield over time. Theor. Appl. Genet.122, 225–238 (2011).
5 F. Laidig et al., Breeding progress, environmental variation and correlation of winter wheat yield and quality traits in German official variety trials and on-farm during 1983-2014. Theor. Appl. Genet.130, 223–245 (2017).
6 T. Würschum, W. L. Leiser, S. M. Langer, M. R. Tucker, C. F. H. Longin, Phenotypic and genetic analysis of spike and kernel characteristics in wheat reveals long-term genetic trends of grain yield components. Theor. Appl. Genet.131, 2071–2084 (2018).
7 P. Annicchiarico, “Genotype x environment interactions: Challenges and opportunities for plant breeding and cultivar recommendations.” (Food and Agriculture 201 Organisation of the United Nations, Rome, Italy, 2002), FAO Plant Production and Protection Paper 174.
8 F. Henkrar et al., Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers. Sci. Agric.73, 134–141 (2016).
9 M. van de Wouw, T. van Hintum, C. Kik, R. van Treuren, B. Visser, Genetic diversity trends in twentieth century crop cultivars: A meta analysis. Theor. Appl. Genet. 120, 1241–1252 (2010).
For more than 50 years, CIMMYT has been dedicated to safeguarding and using maize and wheat genetic diversity for the betterment of millions of peoples’ lives around the globe. To accomplish this mission, CIMMYT relies on the diversity of its staff.
Just as there is no future for our food security and health of ecosystems without plant and animal biodiversity, an organization can only go so far without diversity and inclusion. These are no longer trendy keywords, they ensure success. According to recent studies, as organizations become more inclusive — in terms of age, gender, sexual orientation, race — the performance of their staff can skyrocket by 30% or more.
On the occasion of the International Day for Biological Diversity, we sat down with CIMMYT’s Director of Human Resources, Monika Altmaier, to discuss what organizations can do to become better, more resilient and efficient through investing in the diversity of staff.
Q: How do you see CIMMYT using diversity to support its growth and goals?
Monika Altmaier: As a research organization, we need to be innovative to stay relevant. Hiring diversity fosters just that. Different backgrounds provide different approaches, therefore speeding up the process of locating the best solution. According to experts, inclusive organizations are 1.7 times more likely to be innovation leaders in their market. Combining peoples’ diverse perspectives opens doors to innovation.
Employing diverse staff allows us to be more creative, competitive and improves our best practices. It provides a fresh pair of eyes. For me, diversity is an asset that enables us to learn about ourselves and others and grow, as people and professionals. Figuring out how people think and why is so interesting.
Q: What is CIMMYT doing to attract and retain more diverse talent?
MA: We have just finished sharpening our Gender and Diversity in Research and the Workplace policy. This document outlines how CIMMYT integrates gender and social inclusiveness in its research and innovation for development. Also, it describes what needs to be done to promote gender equality and diversity at all stages of employment, from securing new talent to retaining it.
Creating a 360-degree induction in multiple languages for all of our staff has been high on our agenda ever since hearing opinions of staff from 46 countries that gathered at our Science Week last year. This induction course will outline what is expected from everyone at CIMMYT: respect and dignity for all colleagues and stakeholders, regardless of gender identity and expression, disability or health status.
On a monthly basis, when doing outreach, HR post vacancy announcements that are attractive to people from different countries, that use gender-sensitive language and invite everyone, especially women to apply. We include colleagues of different genders, nationalities, and from various research and administration units in the selection and interview process. We scrutinize shortlists and make sure we are giving everyone the same opportunity.
One thing that is harder to change is the market. Still today, in some countries women do not get the same opportunities as men, not to talk about people from marginalized communities and members from the LGBTQ community. I hope that this will change because equality not only helps companies, but also countries, to have a happier population. CIMMYT works closely with universities across the world to make sure that more and more talent trickles where it is most needed: into research for development.
Monika Altmaier (center) takes a selfie with CIMMYT scientists during CIMMYT’s Science Week 2018. (Photo: Alfredo Saenz for CIMMYT)
Q: In line with hiring diversity, how is CIMMYT attracting millennial talent (people who are mainly born between 1980 and 2000)?
MA: Millennials are a vast workforce. In just a couple years they will reach the peak of representation in the labor force. There is no issue with attracting millennials: thankfully, our mission resonates with them and they are already working for us across all of our offices.
With this Millennial-centric shift, however, the key thing is to meet the needs that they express. Studies say, and I see this in all of our offices, that young people want a more collaborative approach to work. They want to embrace relationships, transparency, dialogue and creativity.
At CIMMYT’s HR, we are exploring different approaches to talent management and succession planning. Traditionally, one progresses hierarchically. But the world, even the research world, is moving too fast to be satisfied with that. We are currently putting our focus on training, which helps with functional evolution. We are exploring the geographic mobility of staff both within the organization and outside, within our vast network of partners, including those within CGIAR. We are also putting more emphasis on work-life balance, which is said to improve employee retention by more than 50%. In the future, we plan to explore functional mobility, too, and encourage young people to think outside the box they may have preselected for themselves at the beginning of their careers.
Q: What do you think about investing in cognitive diversity?
MA:Cognitive diversity helps teams solve problems faster because it unites people with diverse perspective or information processing styles. Basically, how people think about or engage with new uncertain and complex situations.
It’s not easy to surface cognitive diversity and equally complex to harness its benefits. At CIMMYT, we started with doing psychometric testing when hiring team leaders. These tests are designed to measure candidates’ personality characteristics and cognitive abilities. They show if people would fit in a team. Since then we have expanded to testing research and admin teams. In my experience, such tests are highly trustworthy and interesting, and can help team building.
