1. Department of Agricultural Production, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Uganda
2. Agricultural Research Institute (MARUKU), Bukoba, Tanzania
3. Department of Plant Sciences/MS1, Section of Crop and Ecosystem Sciences, University of California, Davis, CA, USA
4. International Centre for Tropical Agriculture (CIAT), Pan Africa Bean Research Alliance (PABRA), Kampala, Uganda