The East Africa program of the Borlaug Global Rust Initiative (BGRI) was launched to reduce the scale and scope of wheat stem rust epidemics in Kenya and Ethiopia, and to mitigate the global threat of virulent and dangerous rust races originating from this region. Since the launch in 2005, the screening facilities in Kenya and Ethiopia have helped to determine the extent of the world’s vulnerability to stem rust race Ug99 and its variants, identify diverse sources of resistance including adult plant resistance based on minor genes, and catalyze a comprehensive global response, leading to expanded awareness, expanded research and breeding activities, and resource mobilization. This paper reviews the role and achievements of the eastern African screening facilities along with the opportunities and challenges faced by the facilities during the ongoing global response to the emergence of Ug99 and its variants.
Screening for stem rust resistance in East Africa
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