Madras Agricultural Journal
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GENOTYPE X ENVIRONMENT INTERACTION FOR GRAIN YIELD IN COWPEA

Abstract

                                Thirteen varieties of cowpea were evaluated in three environments and stability parameters were studied for yield. The varieties IT- 86-D-1056 and Co-4 had average response to changes in environmental conditions with higher mean yield as against the population mean yield. VCP-4 had the highest mean seed yield among the materials studied and was found specially suited for unfavourable growing season.

Key words : Cowpea, Grain Yield, Genotype, Environment, Interaction

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