1. Amhara Regional Agricultural Research Institute, Bahir Dar, Ethiopia
2. School of Agricultural, Earth, and Environmental Sciences, University of KwaZulu-Natal, African Centre for Crop Improvement, Scottsville, South Africa
3. Agricultural Research Council, Vegetable and Ornamental Plants, Roodeplaat, Pretoria, South Africa
4. Sasakawa Africa Association/Sasaakawa Global 2000 Ethiopia, Addis Ababa, Ethiopia