Institution: | P. N. Njau, R. Wanyera, D. Singh, R. Singh,M. Gethi(1. Kenya Agricultural Research Institute (KARI)-Njoro. P.O. Njoro, Kenya 2. International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya 3. International Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600, Mexico) |