Heritability and genetic advance analysis using generation mean analysis in rice (oryza sativa L.) under sodic soil

Heritability and genetic advance was estimated in rice for twenty quantitative traits in four cross combinations Swarna Sub-1 x CSR-10, Sambha Sub-1 x CSR-10, Pusa Sugandha -5 x CSR-10, and Pusa Sugandha -5 x NDR-2064 with respect to yield including quality attributes using generation mean analysis viz., six generation (P1, P2, F1, F2, B1, B2) following Compact Family Block Design in three replications. The promising two crosses, first and second have been discussed. This experiment was conducted on Main Experimental Station of A.N.D. University of Agriculture & Technology, Narendra Nagar (Kumarganj), Ayodhya during Kharif, season 2019. The analysis of variance revealed that all the six generations in each cross combination were highly significant for majority of the yield contributing and quality traits indicating sufficient variability among the parents and their derivatives under study. High heritability coupled with high genetic advance were observed in the cross I for days to 50% flowering, carotene, plant height (cm), flag leaf area (cm2), number of spikelets/panicle, grains/panicle and protein content. In cross II for days to 50% flowering, chlorophyll a, carotene, total chlorophyll, plant height, number of effective tillers/plant, flag leaf area, number of spikelets/panicle, grains/panicle and protein content. which indicated better scope of their improvement through selection to enhance the yield potential of rice (Oryza sativa L.) under sodic soil, as these characters were predominantly governed by additive gene action possessing fixable in nature to sustain the production in target environment.