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VOL. 6, ISSUE 5 (2021)
Assessment of genetic variability and correlation studies in rice (Oryza sativa l.) for grain yield and quality traits suited for eastern plain zone of “UP”
Authors
B Sridevi, GM Lal
Abstract
The present investigation consists of 25 genotypes of rice including 1 check, which were grown in the field experimentation centre of the Department of Genetic and Plant Breeding, SHUATS, Prayagraj during 2019-20 following RBD with three replications. The data were recorded on 13 characters to study the amount of genetic variability, heritability, genetic advance, correlation association of yield contributing components with yield and direct and indirect effects of yield contributing components in the rice genotypes. Analysis of variance among 25 rice germplasm showed highly significant differences for all the characters under study indicates the presence of a substantial amount of genetic variability. High to moderate estimates of GCV and PCV were recorded for number of tillers per hill, number of panicles per hill, test weight, biological yield and number of spikelets per panicle indicating that these characters could be used as selection for crop improvement. High estimates of heritability, broad sense revealed that characters like test weight exhibited highest heritability followed by plant height, number of spikelet’s per panicle, number of tillers per hill, number of panicles per hill and panicle length. Estimates of genetic advance revealed that number of spikelets per panicle exhibited highest genetic advance followed by plant height and biological yield. Correlation coefficient analysis phenotypic level revealed that flag leaf length, flag leaf width, biological yield and test weight showed positive significant correlation with grain yield per plant at both genotypic and phenotypic level. Path coefficient analysis revealed that the flag leaf width, number of panicles per plant, panicle length, days to maturity, biological yield and harvest index has positive direct effect on grain yield per plant.
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Pages:873-877
How to cite this article:
B Sridevi, GM Lal "Assessment of genetic variability and correlation studies in rice (<em>Oryza sativa</em> l.) for grain yield and quality traits suited for eastern plain zone of “UP”". International Journal of Botany Studies, Vol 6, Issue 5, 2021, Pages 873-877
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