Research Article
GenotypexEnvironment Interaction for Resistance to Purple Blotch (Alternaria porri L. (Ellis) Cif.) in Onion (Allium cepa L.) in Nigeria
Department of Crop Science, Faculty of Agriculture, Usmanu Danfodiyo University, P.M.B. 2346, Sokoto, Nigeria
S.G. Ado
Department of Plant Science, Faculty of Agriculture, Ahmadu Bello University, Samaru-Zaria, Nigeria