1Department of Crop Production & Landscape management, Ebonyi State University, Abakaliki, Nigeria.
2Crop Improvement Division, International Institute of Tropical Agriculture,Oyo Road, P.M.B 5320, Ibadan, Nigeria. International mailing address: IITA c/o L.W. Lambourn and Co., Carolyn House, 26 Dingwall Road, Croydon CR9 3EE, United Kingdom.
Email: [email protected]