Vol. 11, Issue 2 (2022)

Author(s):
KS Mungra, DA Chauhan, PA Vavdia, YV Naghera and GD Vadodariya

Abstract:
Generation mean analysis was carried out by in two cross NCK-13-07 x NCK-15-09 and NCK-13-07 x GC-3 of cowpea. The mean is partition in to additive, dominance and epistasis by using six parameter models. Magnitude of dominance or dominance x dominance gene effect was higher than the additive gene effect for most of traits in both the crosses. Among epistasis, additive x additive gene interaction was found significant in cross NUK NCK-13-07 x NCK-15-09 for branches per plant and clusters per plant and in cross NCK-13-07 x GC-3 for plant height, branches per plant and harvest index. Dominance x dominance component contributed significantly in cross NCK-13-07 x NCK-15-09 for days to maturity, branches per plant, clusters per plant and grain yield per plant and in cross NCK-13-07 x GC-3 for days flowering, days to maturity and harvest index. Hence selection should be carried out in later generation and it would be desirable to follow population improvement approaches involving inter mating of selected plant in advance generation like biparental mating and diallel selective mating design that take care of both additive and non-additive gene actions are more promising for the improvement of various characters studied.