1. African Center for Crop Improvement; University of KwaZulu-Natal; Private Bag X01 Scottsville 3209 Pietermaritzburg South Africa
2. Ethiopian Institute of Agricultural Research; Ambo-PPRC; PO Box 37 Ambo Ethiopia
3. National Agricultural Biotechnology Research Program; Holetta Research Center; Holetta PO Box 2003 Addis Ababa Ethiopia
4. IITA; c/o ICIPE; PO Box 30772-00100 Nairobi Kenya