Genetic variability and correlation studies in selected F₄ population of sorghum (Sorghum bicolor (L.) Moench)
2014
Kalpande, H.V. | Chavan, S.K. | More, A.W. | Havinale, V.C. | Patil, V.S. | Misal, M.B.
Analysis of variance showed significant genetic variability in the genotypes for all the characters. Phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were more or less equal for the characters plant height, days to 50% flowering, relative water content, panicle length, fodder yield, test weight, number of primary branches, grain⁻¹ primary branches and grain yield. However, larger differences in PCV and GCV were exhibited for rest of the characters. High heritability accompanied with high genetic advance was observed for the characters viz., test weight, plant height, fodder yield, grain yield, grains⁻¹ primary branch and harvest index. Characters like number of primary branches, panicle length, grains-1 primary branches, plant height, fodder yield and panicle width had positive significant correlation with grain yield planr¹. Path coefficient analysis revealed maximum contribution of plant height, fodder yield, panicle width, harvest index, days to 50% flowering, leaf area index and test weight to the grain yield. Out of 28 F₄ genotypes the five genotypes viz., IB 12 x IS 25017B-1-2-1, SRT 18 x MR 836 (1-2-3), CSV 15 x B 58586-1-2-1, PVK 809 x IS 25017-1-2-1, GMRP 9 x IS 25017-1-2-1 were found superior for different yield component characters over the checks.
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