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Generation mean analysis study in cowpea was undertaken to estimate the gene action operating in the inheritance of yield and its components using six basic generations viz. P1, P2, F1, F2, BC1 and BC2 of two different crosses namely PGCP-63 X Pant Lobia-1 and Pant Lobia-3 x Pant Lobia-1 were studied. For most of the studied traits, additive, dominant, additive x additive, additive x dominance and dominance x dominance were significant. Additive effect significantly contributed for number of pods per plant and 100 seed weight. Dominance effect was significant for the pod length in both the families. Additive x dominance type of interaction contributed significantly for days to flowering, days to pod maturity and seed yield per hectare. Duplicate type of epistasis was observed for days to flowering, and pod length in family1 and also in family 2.The findings suggested that the recurrent selection could be followed in cowpea improvement.

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Maize (Zea mays L.) is one of the emerging crops having its position in top three cereal crops throughout the world in area and production. In this study, six lines and five testers were crossed in Line × Tester mating design to produce 30 single cross hybrids. The hybrids, their parents along with standard check GAYMH-1 were evaluated in Randomized Block Design, with three replications for yield and attributing traits. The results indicated non-additive gene action found to be predominant for inheritance of flowering traits while, kernel yield, cob yield, cob girth and cob length showed solely non-additive gene actions. Among the parents, BLD-250, BLD-221, BLD-210 and BLD-107 reported as best combiners for yield and attributing traits. The hybrids, Z 488-4 × VL-1032 and BLD-250 × BLD-46 reported good specific combining ability, higher magnitude of heterobeltiosis and standard heterosis for kernel yield per plant. Whereas, the cross combination, WNC 18242 × VL-1032 reported desirable SCA and heterobeltiosis for flowering and maturity traits. The cross