1. National Crops Resources Research Institute (NaCRRI) 9 km Gayaza‐Zirobwe Road, P.O. Box 7084 Kampala Uganda
2. Makerere University P.O Box 7062 Kampala Uganda
3. CIRAD, UMR Qualisud MontpellierF‐34398France
4. Qualisud, CIRAD, Institut Agro, Univ Montpellier, Avignon Universit_e, Universit_e de La R_eunion Montpellier France
5. Cornell University Ithaca NY14850USA