Abstract: The experiment was conducted with 40 genotypes of rice during Kharif 2013 in Randomized Block Design. The data were recorded for 13 quantitative characters to study genetic variability, heritability, genetic advance, correlation and path coefficient. On the basis of mean performance highest grain yield per plant reported in OM-6070 (46.93) genotype followed IR-8070-7-69-1-3-3 (44.55), IR-79228-9-2-3-1 (42.53) and IR-77186-148-3-4-3 (41.30). Analysis of variance revealed significant difference among 40 rice genotypes for all characters indicating the existence of variability. High GCV and PCV were observed for grain yield per plant and biological yield per plant. High heritability coupled with high genetic advance as percent mean for all the character except days to flowering, days to maturity, number of tillers per plant, number of panicle per plant and plant height. Correlation and path-coefficient analysis, concluded that, biological yield per plant and harvest index exhibited maximum positive direct effect on grain yield seems to be primary yield contributing characters and could be relied upon for selection of genotypes to improve genetic yield potential of rice. Hence, utmost importance should be given to these characters during selection for single plant yield improvement.
Keywords: Variability, Heritability, Genetic Advance, Correlation Coefficient and Path Coefficient Analysis
Title: Genetic Variability, Correlation and Path Coefficient Studies for Grain Yield and Other Yield Attributing Traits in Rice (Oryza Sativa L.)
Author: SATISH KUMAR RAI, SURESH B.G., P.K. RAI, G.R. LAVANYA, RAVI KUMAR, SANDHYA
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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