SI 9. New tools and methods for NARS and SMEs

double-haploidProvide maize breeders in the developing world with genomics and bioinformatics tools, breeding and phenotyping approaches that enable them to double their breeding gains given limited resources.

For example, the use of doubled haploids (DH) in maize breeding dramatically reduces the time required to produce homozygous inbred lines. However, in developing countries, the adoption of DH technology is limited by the lack of inducers adapted to tropical/sub-tropical conditions. CIMMYT addressed this limitation in 2012 by introducing haploid inducers ready for sharing with interested institutions. In 2012, 91 breeders from developing countries in Latin America, Africa and Asia received training on Doubled Haploid breeding. A Doubled Haploid facility has been established at CIMMYT HQ, Mexico and a second facility is under development in Sub-Saharan Africa.


Estimated impact 2020 2030
Benefit to the poor The target area includes an estimated 616 million maize-dependent poor, of whom 422 million live in rural areas, and an estimated 59 million maize-dependent malnourished children
Annual production increase 0.4 million tons of maize grain 5.5 million tons of maize grain
Food calorie equivalent (at 2000 kcal) 1% of the caloric intake of 609 million maize consumers 15% of the caloric intake of 609 million maize consumers
Annual value addition USD 60 million USD 825 million
Benefit to the environment Increased land and water use efficiency; increased deployment of maize genetic diversity
Others Strengthening of local entrepreneurs and innovation