1Department of Plant Breeding and Genetics, Rajasthan Agricultural Research Institute (SKNAU), Durgapura-302018, Rajasthan, India
Department of Genetics and Plant Breeding, Institute of Agricultural Sciences Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
*Email for correspondence: umesh7155@gmail.com
Online published on 25 July, 2018.
The present investigation was carried out on 24 rice genotypes to study different genetic parameters viz range, coefficient of variation (CV), heritability and genetic advance for yield attributing and quality characters. The data indicated the existence of genetic variability for all the traits varying from lower to higher coefficients of variance. The genotypic coefficient of variation (GCV) for characters like spikelets/panicle and alkali spread value were 28.23 and 21.77 respectively whereas phenotypic coefficient of variation (PCV) values for these characters were 28.68 and 21.83 respectively. Small differences between GCV and PCV were recorded for all the characters. Amylose content (0.66) recorded lesser influence with environment and highest was recorded with flag leaf width (12.33) in agronomic traits. Thus it can be concluded that the quality characters are less influenced than the agronomic traits by environmental factors. The heritability values for various yield and quality traits ranged from 27.61 (spikelet fertility) to 99.43 per cent (alkali spread value). The genetic advance values ranged from 0.19 (kernel breadth) to 70.33 (spikelets/panicle) for different yield and quality traits.
Range, genetic advance, variability, heritability, rice
