Affiliation: | 1. State Key Laboratory of Arid Land Crop Science, Lanzhou, China;2. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;3. CSIR-Plant Genetic Resources Research Institute (PGRRI), P. O. Box 7, Bunso, Ghana;4. Department of Crop Science, Faculty of Agriculture, Food and Consumer Sciences, University for Development Studies, P. O Box TL 1882, Tamale, Ghana |