B. HEMA SAI*, B. RUPESH KUMAR REDDY, M. SHANTHI PRIYA AND ESWARRAYA RAMIREDDY

Department of Genetics and Plant Breeding, S.V. Agricultural College, ANGRAU, Tirupati-517 502.

ABSTRACT

In the present study, analysis of variance for 60 rice genotypes revealed significant differences among the genotypes for 15 yield and yield attributes indicating the presence of considerable amount of genetic variability among the rice genotypes. Higher estimates of PCV and GCV observed for number of chaffy grains panicle-1, number of filled grains panicle-1, number of spikelets panicle-1, grain yield plant-1 and thousand grain weight showed ample amount of variation for these traits. High heritability coupled with high genetic advance as per cent of mean was observed for days to 50% flowering, days to maturity, thousand grain weight, number of chaffy grains panicle-1, grain L/B ratio, grain width, plant height, number of spikelets panicle-1, number of filled grains panicle-1 and grain yield plant-1 indicating the predominance of additive gene action and direct selection would be effective for improvement of these traits.

KEYWORDS: PCV, GCV, Heritability, Genetic Advance.