Author(s):

Rohit Yadav, Priyanka Rajpoot, OP Verma, PK Singh, Priyansh Singh and Vijayanand Pathak

Abstract: Thirty five diverse genotypes of rice (Oryza sativa L.) with two checks were evaluated for twelve quantitative traits under sodic soil. The variability studies indicated that high PCV (phenotypic coefficient of variability) and GCV (genotypic coefficient of variability) was observed in case of biological yield/plant indicating greater scope of improvement through selection in the environment. Moderate PCV and GCV was observed in case of plant height (PCV =18.80%, GCV =18.52%), grain yield per plant (18.67%, 18.15%) effective tillers per plant and flag leaf area (PCV =17.47%, GCV = 14.07%). while spikelets per panicle followed by 1000 grain weight, days to 50% flowering, harvest index, days to maturity, panicle length and spikelet fertility (%) showed lower PCV and GCV. High heritability in broad sense was noted for plant height followed by days to 50% flowering, biological yield per plant, days to maturity, grain yield per plant 1000-grain weight and spikelet per panicle whereas, flag leaf area per plant, spikelet fertility and harvest index showed moderate heritability. Panicle length and effective tillers per plant recorded low heritability among all traits under study. while high genetic advance as % of mean was noted for biological yield per plant while panicle length had lowest value for this parameter. High heritability coupled with high genetic advance as per cent mean was observed for plant height and grain yield per plant indicating the involvement of additive gene action. Hence, emphasis should be given to select these quantitative traits to enhance the yield potential of rice in sodic soil.

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