1. Department of Plant Breeding and Seed Science; University of Agriculture Makurdi; PMB 2373, Makurdi Nigeria
2. International Institute of Tropical Agriculture; Ibadan Nigeria. C/o IITA Ltd, Carolym House, 26 Dingwall Road, Croydon CR9 3 EE
3. Cell Biology and Genetics Department; Faculty of Science; University of Lagos. PMB 66 Akoka Yaba Lagos Nigeria
4. Department of Biology; University of Virgina; Charlottesville VA 22904 USA