AMMI and GGE biplot analysis of genotype by environment interaction and yield stability in early maturing cowpea [ (L) Walp] landraces in Ethiopia.

Cowpea is one of the most important grain legumes for human consumption and animal feeding. Despite this importance, its production is hampered by biotic and abiotic constraints. Genotype by environment interaction study was performed to identify the most stable cowpea genotype(s) and the desirable environment(s) for cowpea research in Ethiopia.