Wheat breeding lines from the IWYP Hub at CIMMYT are out-yielding local checks in tests, validating the strategy of combining high biomass individuals with those that feature better grain filling attributes. The lines are being sent to public and private breeding programs worldwide. Read more about this and other exciting IWYP activities and outputs:
Posts Tagged ‘breeding’
DHAKA, Bangladesh (CIMMYT) — As wheat farmers in Bangladesh struggle to recover from a 2016 outbreak of a mysterious disease called “wheat blast,” the country’s National Seed Board (NSB) released a new, high-yielding, blast-resistant wheat variety, according to a communication from the Wheat Research Centre (WRC) in Bangladesh.
Called “BARI Gom 33,” the variety was developed by WRC using a breeding line from the International Maize and Wheat Improvement Center (CIMMYT), a Mexico-based organization that has collaborated with Bangladeshi research organizations for decades, according to Naresh C. Deb Barma, Director of WRC, who said the variety had passed extensive field and laboratory testing. “Gom” means “wheat grain” in Bangla, the Bengali language used in Bangladesh.
“This represents an incredibly rapid response to blast, which struck in a surprise outbreak on 15,000 hectares of wheat in southwestern Bangladesh just last year, devastating the crop and greatly affecting farmers’ food security and livelihoods, not to mention their confidence in sowing wheat,” Barma said.
Caused by the fungus Magnaporthe oryzae pathotype triticum, wheat blast was first identified in Brazil in 1985 and has constrained wheat farming in South America for decades. Little is known about the genetics or interactions of the fungus with wheat or other hosts. Few resistant varieties have been released in Brazil, Bolivia and Paraguay, the countries most affected by wheat blast.
The Bangladesh outbreak was its first appearance in South Asia, a region where rice-wheat cropping rotations cover 13 million hectares and over a billion inhabitants eat wheat as main staple.
Many blast fungal strains are impervious to fungicides, according to Pawan Singh, a CIMMYT wheat pathologist. “The Bangladesh variant is still sensitive to fungicides, but this may not last forever, so we’re rushing to develop and spread new, blast-resistant wheat varieties for South Asia,” Singh explained.
The urgent global response to blast received a big boost in June from the Australian Centre for International Agricultural Research (ACIAR), which funded an initial four-year research project to breed blast resistant wheat varieties and the Indian Council of Agricultural Research (ICAR), which also provided grant to kick-start the work in South Asia. Led by CIMMYT, the initiative involves researchers from nearly a dozen institutions worldwide.
Chemical controls are costly and potentially harmful to human and environmental health, so protecting crops like wheat with inherent resistance is the smart alternative, but resistance must be genetically complex, combining several genes, to withstand new mutations of the pathogen over time.
Key partners in the new project are the agricultural research organizations of Bangladesh, including the Bangladesh Agricultural Research Institute (BARI), and the Instituto Nacional de Innovación Agropecuaria y Forestal in Bolivia, which will assist with large-scale field experiments to select wheat lines under artificial and natural infections of wheat blast.
Other partners include national and provincial research organizations in India, Nepal and Pakistan, as well as Kansas State University (KSU) and the U.S. Department of Agriculture-Agricultural Research Services (USDA-ARS). The U.S. Agency for International Agricultural Development (USAID) has also supported efforts to kick-start blast control measures, partnerships and upscaling the breeding, testing and seed multiplication of new, high-yielding, disease resistant varieties through its Feed the Future project.
BARI Gom 33 was tested for resistance to wheat blast in field trials in Bolivia and Bangladesh and in greenhouse tests by the USDA-ARS laboratory at Fort Detrick, Maryland. International partnerships are critical for a fast response to wheat blast, according to Hans-Joachim Braun, director of CIMMYT’s Global Wheat Program.
“Worldwide, we’re in the middle of efforts that include blast surveillance and forecasting, studies on the pathogen’s genetics and biology, integrated disease management and seed systems, as well as raising awareness about the disease and training for researchers, extension workers, and farmers,” said Braun.
With over 160 million people, Bangladesh is among the world’s most densely populated countries. Wheat is Bangladesh’s second most important staple food, after rice. The country grows more than 1.3 million tons each year but consumes 4.5 million tons, meaning that imports whose costs exceed $0.7 billion each year comprise more than two-thirds of domestic wheat grain use.
WRC will produce tons of breeder’s seed of BARI Gom 33 each year. This will be used by the Bangladesh Agricultural Development Corporation (BADC) and diverse non-governmental organizations and private companies to produce certified seed for farmers.
“This year WRC will provide seed to BADC for multiplication and the Department of Agricultural Extension will establish on-farm demonstrations of the new variety in blast prone districts during 2017-18,” said Barma.
As an added benefit for the nutrition of wheat consuming households, BARI Gom 33 grain features 30 percent higher levels of zinc than conventional wheat. Zinc is a critical micronutrient missing in the diets of many of the poor throughout South Asia and whose lack particularly harms the health of pregnant women and children under 5 years old.
With funding from HarvestPlus and the CGIAR Research Program on Agriculture for Nutrition, CIMMYT is leading global efforts to breed biofortified wheat with better agronomic and nutritional quality traits. The wheat line used in BARI Gom 33 was developed at CIMMYT, Mexico, through traditional cross-breeding and shared with Bangladesh and other cooperators in South Asia through the Center’s International Wheat Improvement Network, which celebrates 50 years in 2018.
Stable window 1 and 2 (W1W2) funding from CGIAR enabled CIMMYT and partners to react quickly and screen breeding lines in Bolivia, as well as working with KSU to identify sources of wheat blast resistance. The following W1 funders have made wheat blast resistance breeding possible: Australia, the Bill & Melinda Gates Foundation, Canada, France, India, Japan, Korea, New Zeland, Norway, Sweden, Switzerland, the United Kingdom and the World Bank. The following funders also contributed vital W2 funding: Australia, China, the United Kingdom (DFID) and USAID.
by Katelyn Roett, Mike Listman / October 12, 2017
New research shows improved wheat raises the quality of life for men and women across rural communities in Afghanistan.
A recent report from Gennovate, a major study about gender and innovation processes in developing country agriculture, found that improved wheat varieties emerged overwhelmingly among the agricultural technologies most favored by both men and women.
In one striking example from Afghanistan, introducing better wheat varieties alone reduced women’s work burden, showing how the uptake of technology – whether seeds or machinery – can improve the quality of life.
“Local varieties are tall and prone to falling, difficult to thresh, and more susceptible to diseases, including smuts and bunts, which requires special cleaning measures, a task normally done by women,” said Rajiv Sharma, a senior wheat scientist at International Maize and Wheat Improvement Center (CIMMYT) and country liaison officer for CIMMYT in Afghanistan. “Such varieties may comprise mixes of several seed types, including seed of weeds. They also give small harvests for which threshing is typically manual, with wooden rollers and animals, picking up sticks, stones, and even animal excrement that greatly complicates cleaning the grain.”
Both women and men spoke favorably about how improved wheat varieties have eased women’s wheat cleaning work. “Improved seeds can provide clean wheat,” said an 18-year old woman from one of the study’s youth focus groups in Panali, Afghanistan. “Before, we were washing wheat grains and we exposed it to the sun until it dried. Machineries have [also] eased women’s tasks.”
Finally, Sharma noted that bountiful harvests from improved varieties often lead farmers to use mechanical threshing, which further reduces work and ensures cleaner grain for household foods.
Gennovate: A large-scale, qualitative, comparative snapshot
Conceived as a “bottom-up” idea by a small gender research team of CGIAR in 2013, Gennovate involves 11 past and current CGIAR Research Programs. The project collected data from focus groups and interviews involving more than 7,500 rural men and women in 26 countries during 2014-16.
Some 2,500 women and men from 43 rural villages in 8 wheat-producing countries of Africa and Asia participated in community case studies, as part of the CGIAR Research Program on Wheat.
“Across wheat farm settings, both men and women reported a sense of gradual progress,” said Lone Badstue, gender specialist at the CIMMYT and Gennovate project leader. “But women still face huge challenges to access information and resources or have a voice in decision making, even about their own lives.”
According to estimates of the Food and Agriculture Organization of the United Nations (FAO), if women farmers, who comprise 43 per cent of the farm labor force in developing countries, had the same access to resources as men, agricultural output in 34 developing countries would rise by an estimated average of as high as 4 percent.
“Gender-related restrictions such as limitations on physical mobility or social interactions, as well as reproductive work burden, also constitute key constraints on rural women’s capacity to innovate in agriculture,” Badstue explained.
Gender equity drives innovation
The Gennovate-wheat report identified six “positive outlier communities” where norms are shifting towards more equitable gender relations and helping to foster inclusiveness and agricultural innovation. In those communities, men and women from all economic scales reported significantly higher empowerment and poverty reductions than in the 37 other locations. Greater acceptance of women’s freedom of action, economic activity, and civic and educational participation appears to be a key element.
“In contexts where gender norms are more fluid, new agricultural technologies and practices can become game-changing, increasing economic agency for women and men and rapidly lowering local poverty,” Badstue said.
The contributions and presence of CIMMYT in Afghanistan, which include support for breeding research and training for local scientists, date back several decades. In the last five years, the Agricultural Research Institute of Afghanistan (ARIA) of the country’s Ministry of Agriculture, Irrigation & Livestock (MAIL) has used CIMMYT breeding lines to develop and make available to farmers seed of 15 high-yielding, disease resistant wheat varieties.
Read the full report “Gender and Innovation Processes in Wheat-Based Systems” here.
GENNOVATE has been supported by generous funding from the World Bank; the CGIAR Gender & Agricultural Research Network; the government of Mexico through MasAgro; Germany’s Federal Ministry for Economic Cooperation and Development (BMZ); numerous CGIAR Research Programs; and the Bill & Melinda Gates Foundation.
With generous funding from the Australian Centre for International Agricultural Research (ACIAR) over the last 15 years, Afghanistan research organizations and the International Maize and Wheat Improvement Center (CIMMYT) have helped supply Afghan farmers with improved varieties and farming practices to boost production of maize and wheat.
“As of 2012, the start of the most recent phase of ACIAR-funded work, Afghanistan partners have developed and released 12 high-yielding and disease resistant bread wheat varieties, as well as 3 varieties of durum wheat, 2 of barley and 3 of maize,” said Rajiv Sharma, a senior wheat scientist at CIMMYT and country liaison officer for CIMMYT in Afghanistan.
Sharma spoke at a workshop, which took place on August 28, with partners from the Agricultural Research Institute of Afghanistan (ARIA) of the country’s Ministry of Agriculture, Irrigation & Livestock (MAIL). The event was organized to review accomplishments and facilitate MAIL’s takeover of all activities, when the project ends in October 2018.
“The pedigrees of all new varieties feature contributions from the breeding research of CIMMYT and the International Winter Wheat Improvement Programme based in Turkey, both responsible for introducing more than 9,000 new wheat and maize lines into the country since 2012,” Sharma added. The International Winter Wheat Improvement Programme (IWWIP) is operated by Turkey, CIMMYT, and ICARDA (the International Center for Agricultural Research in the Dry Areas).
Sharma noted that CIMMYT’s presence in Afghanistan, which includes support for breeding research and training for local scientists, dates back several decades and that the latest achievements with ARIA and other partners and ACIAR support include:
- The delineation of wheat agro-climatic zones.
- Forecasting climate change impacts on the Afghan wheat crop.
- Strategizing to raise wheat production.
- Characterization of Afghanistan’s wheat genetic resource collection.
- Training abroad for 64 Afghan researchers and in-country for 4,000.
- Launching research on wheat hybridization.
- In direct partnership with farmers, more than 1,800 farmer field demonstrations, 80 field days, and introduced machinery like seed drills and mobile seed cleaners.
- Shared research on and promotion of conservation agriculture, genomic selection, wheat bio-fortification, quality protein maize, climate change, crop insurance and wheat blast resistance and control.
In good years Afghan farmers harvest upwards of 5 million tons of wheat, the country’s number-one food crop, but in some years annual wheat imports exceed 1 million tons to satisfy domestic demand, which exceeds 5.8 million tons.
Multiple partners map avenues to fortify cereal farming
The workshop attracted 45 participants representing ARIA, MAIL, ICARDA, CIMMYT, Michigan State University, ACIAR, the Food and Agriculture Organization of the United Nations (FAO), the Embassy of Australia, and several provincial Directorates of Agriculture, Irrigation & Livestock (DAIL) of Afghanistan.
Among other participants, Mahboobullah Nang, Director of Seed Certification, and Akbar Waziri, Director of the Cereal Department, both from MAIL, offered the Ministry’s support for the continuation of CIMMYT’s longstanding efforts in Afghanistan, particularly in breeding and varietal testing and promotion.
Representing ACIAR, Syed Mousawi commended capacity development activities organized by CIMMYT since the 1970s, which have raised the quality of crop research in Afghanistan and provided a vital link to the global science community over the years.
Participants also recommended extending CIMMYT outreach work, offering training in extension, introducing advanced technologies, and support for and training in varietal maintenance, conservation agriculture, experimental designs, research farm management, data analysis and data management.
With backing from leading international donors and scientists, nine South Asia wheat researchers recently visited the Americas for training on measures to control a deadly and mysterious South American wheat disease that appeared suddenly on their doorstep in 2016.
Known as “wheat blast,” the disease results from a fungus that infects the wheat spikes in the field, turning the grain to inedible chaff. First sighted in Brazil in the mid-1980s, blast has affected up to 3 million hectares in South America and held back the region’s wheat crop expansion for decades.
In 2016, a surprise outbreak in seven districts of Bangladesh blighted wheat harvests on some 15,000 hectares and announced blast’s likely spread throughout South Asia, a region where rice-wheat cropping rotations cover 13 million hectares and nearly a billion inhabitants eat wheat.
“Most commercially grown wheat in South Asia is susceptible to blast,” said Pawan Singh, head of wheat pathology at the International Maize and Wheat Improvement Center (CIMMYT), an organization whose breeding lines are used by public research programs and seed companies in over 100 countries. “The disease poses a grave threat to food and income security in the region and yet is new and unknown to most breeders, pathologists and agronomists there.”
As part of an urgent global response to blast and to acquaint South Asian scientists with techniques to identify and describe the pathogen and help develop resistant varieties, Singh organized a two-week workshop in July. The event drew wheat scientists from Bangladesh, India, Nepal and Mexico, taking them from U.S. greenhouses and labs to fields in Bolivia, where experimental wheat lines are grown under actual blast infections to test for resistance.
The training began at the U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) Foreign Disease-Weed Science Research facility at Fort Detrick, Maryland, where participants learned about molecular marker diagnosis of the causal fungus Magnaporthe oryzae pathotype triticum (MoT). Sessions also covered greenhouse screening for blast resistance and blast research conducted at Kansas State University. Inside Level-3 Biosafety Containment greenhouses from which no spore can escape, participants observed specialized plant inoculation and disease evaluation practices.
The group then traveled to Bolivia, where researchers have been fighting wheat blast for decades and had valuable experience to share with the colleagues from South Asia.
“In Bolivia, workshop participants performed hands-on disease evaluation and selection in the field—an experience quite distinct from the precise lab and greenhouse practicums,” said Singh, describing the groups time at the Cooperativa Agropecuaria Integral Colonias Okinawa (CAICO), Bolivia, experiment station.
Other stops in Bolivia included the stations of the Instituto Nacional de Innovación Agropecuaria y Forestal (INIAF), Asociación de Productores de Oleaginosas y Trigo (ANAPO), Centro de Investigación Agrícola Tropical (CIAT), and a blast-screening nursery in Quirusillas operated by INIAF-CIMMYT.
“Scientists in South Asia have little or no experience with blast disease, which mainly attacks the wheat spike and is completely different from the leaf diseases we normally encounter,” said Prem Lal Kashyap, a scientist at the Indian Institute of Wheat and Barley Research (IIWBR) of the Indian Council of Agricultural Research (ICAR). “To score a disease like blast in the field, you need to evaluate each spike and check individual spikelets, which is painstaking and labor-intensive, but only thus can you assess the intensity of disease pressure and identify any plants that potentially carry genes for resistance.”
After the U.S.A. and Bolivia, the South Asia scientists took part in a two-week pathology module of an ongoing advanced wheat improvement course at CIMMYT’s headquarters and research stations in Mexico, covering topics such as the epidemiology and characterization of fungal pathogens and screening for resistance to common wheat diseases.
The knowledge gained will allow participants to refine screening methods in South Asia and maintain communication with the blast experts they met in the Americas, according to Carolina St. Pierre who co-ordinates the precision field-based phenotyping platforms of the CGIAR Research Program on Wheat.
“They can now also raise awareness back home concerning the threat of blast and alert farmers, who may then take preventative and remedial actions,” Singh added. “The Bangladesh Ministry of Agriculture has already formed a task force through the Bangladesh Agricultural Research Council (BARC) to help develop and distribute blast resistant cultivars and pursue integrated agronomic control measures.”
The latest course follows on from a hands-on training course in February 2017 at the Wheat Research Center (WRC) of the Bangladesh Agricultural Research Institute (BARI), Dinajpur, in collaboration with CIMMYT, Cornell University, and Kansas State University.
Participants in the July course received training from a truly international array of instructors, including Kerry Pedley and Gary Peterson, of USDA-ARS, and Christian Cruz, of Kansas State University; Felix Marza, of Bolivia’s Instituto Nacional de Innovación Agropecuaria y Forestal (INIAF); Pawan Singh and Carolina St. Pierre, of CIMMYT; Diego Baldelomar, of ANAPO; and Edgar Guzmán, of CIAT-Bolivia.
Funding for the July event came from the Bangladesh Agricultural Research Institute (BARI), the Indian Council of Agricultural Research (ICAR), CIMMYT, the United States Agency for International Development (USAID) and the Bill & Melinda Gates Foundation (through the Cereal Systems Initiative for South Asia), the Australian Centre for International Agricultural Research (ACIAR), and the CGIAR Research Program on Wheat.
The 2016 CIMMYT Annual Report details the strong partnerships and science through which CIMMYT creates and shares innovations for farmers to grow more, earn more and reduce environmental impacts, now and in the future. Highlights include:
- Maize and wheat breeding speeds up to equip farmers with varieties for dryer, hotter climates, and to resist evolving pathogens and pests.
- Scientists refute trendy claims disparaging wheat and promote the nutritional benefits of this vital food grain.
- Growing partnerships, including the joint launch with Henan Agricultural University, China, of a new maize and wheat research center.
- Dramatically expanded maize seed markets for Mexican farmers.
- Use of zero tillage and other sustainable agriculture practices in southern Africa and South Asia.
In 2016, CIMMYT marked and celebrated 50 years of applying excellence in maize and wheat science to improve the livelihoods of the disadvantaged. With the commitment and continuous support of dedicated staff, partners and donors, the Center will continue contributing to a food- and nutrition-secure future for all.
Click here TO VIEW OR DOWNLOAD A COPY OF THE REPORT.
EL BATAN, Mexico (July 1, 2017) — The urgent global response to wheat blast, a little understood fungal disease that appeared suddenly and blighted wheat crops in Bangladesh in 2016, has received a big boost from the Australian Centre for International Agricultural Research (ACIAR), which is funding an initial four-year research project to breed blast resistant wheat varieties.
The wheat blast pathogen, which can move on air currents or ride infected grain, is likely to spread soon throughout South Asia, a region where rice-wheat cropping rotations cover 13 million hectares and nearly a billion inhabitants eat wheat.
Under the initiative led by the Mexico-based International Maize and Wheat Improvement Center (CIMMYT), researchers from nearly a dozen institutions worldwide will join forces to develop high-yielding varieties with resistance to blast, reducing the risk of catastrophic crop losses.
“This research project aims to identify sources of resistance, characterize the resistance genes, and develop DNA markers to create resistant, locally-adapted wheat varieties and make them available to farmers,” said Pawan Singh, head of wheat pathology at CIMMYT, an organization whose breeding lines are used by public research programs and seed companies in over 100 countries. “The work could not be more critical, given the likelihood of blast’s spread and its deadly virulence for wheat varieties worldwide.”
Caused by the fungus Magnaporthe oryzae pathotype Triticum (MoT), wheat blast was first identified in Brazil in 1985 and has threatened and constrained wheat farming in South America for decades.
Fungicides offer only partial control of blast, according to N.C.D. Barma, director at Bangladesh’s Wheat Research Centre (WRC). “Under the right conditions, the fungus can develop with lightning speed, blanching and withering the grain,” Barma said. “By that time the farmer’s losses are near total.”
Wheat experts and government officials in Bangladesh, in collaboration with CIMMYT, sounded the alarm last year, when a surprise blast outbreak struck 15,000 hectares of wheat fields near the country’s border with India.
By Matthew O’Leary/CIMMYT
EL BATAN, Mexico (May 30,2017)– In an effort to stamp out hidden hunger, scientists are calling for support to make zinc-biofortification a core trait in the world’s largest wheat breeding program.
At least 2 billion people around the world suffer from micronutrient deficiency, or hidden hunger, which is characterized by iron-deficiency anemia, vitamin A and zinc deficiency.
Zinc deficiency remains a crucial health issue in sub-Saharan Africa and South Asia. As a key nutrient in red meat, zinc deficiency is prevalent in areas of high cereal and low animal food consumption.
CIUDAD OBREGÓN, Mexico- Ravi Singh compares plots of wheat lines growing in the fields of Obregón to determine which lines have potential as new varieties. Relying on reams of statistical breeding data and an experienced eye, the head of bread wheat improvement at the International Maize and Wheat Improvement Center (CIMMYT) evaluates plants for resistance to rusts and other diseases, height, tillering ability, grain fill or the mass and size of the spikes, and general vigor or robustness. After detailed evaluation, the fate of the plant is determined: it is selected for advancement and harvested for seed for a yield trial, or it is passed over. With his team, Singh surveys tens of thousands of small wheat plots each season.
As part of varied approaches at the International Maize and Wheat Improvement Center (CIMMYT) to unleash the power of wheat biodiversity, researchers from India and Mexico have been mobilizing native diversity from ancestral versions of wheat and related grasses to heighten the crop’s resilience to dryness and heat—conditions that have held back wheat yields for several decades and will worsen as earth’s climate changes. Now their results are beginning to reach breeders worldwide.