Author(s):

Saurabh Dixit, RM Tripathi, V Prasad and Kumud Singh

Abstract: An investigation with eighty aromatic rice genotypes was undertaken to study the genotypic coefficient of variability (GCV) and phenotypic coefficient of variability (PCV), heritability (broad sense) and genetic advance for days to 50% flowering, days to maturity, plant height, panicle number per hill, number of total spikelet per panicle, number of fertile spikelet per panicle, sterility (%), test weight and grain yield. For all the characters the estimates of GCV were smaller than the PCV, suggesting the influence of environment on the traits studies. High heritability coupled with high genetic advance for days to 50% flowering, days to maturity, plant height, number of total spikelet per panicle and number of fertile spikelet per panicle indicate that these characters were predominantly governed by additive gene action. High heritability and moderate to low genetic advance for, panicle length, panicle number per hill, sterility (%) test weight and grain yield suggested the predominantly role of non- additive gene action in their inheritance. It reflects that heterosis breeding can be used in breeding programme to generate wide genetic variability for improvement of yield in non-basmati aromatic rice

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