Vol. 8, Issue 2 (2020)
Genetic variability, heritability and genetic advance estimates for different quantitative traits in Rice (Oriza sativa L.) under sodic soil condition
Author(s): Yogendra Singh, MP Chauhan, Anju Kumari and Kanhaiya Lal
Abstract: An investigation was carried out to assess genetic variability, heritability and genetic advance for different quantitative traits in thirty-one entries (7 female lines + 3 male lines + 21 crosses) with 2 check varieties (Narendra usar dhan-3 and CSR-43). Analysis of variance revealed that variances due to treatments, parents and crosses were highly significant for almost all the traits indicating that sufficient variability was existed in the treatments, parents and crosses. The magnitudes of phenotypic coefficient of variance (PCV) for all the characters were slightly higher than their corresponding genotypic coefficient of variance (GCV), indicated very less environmental influence on the expression of the characters. The maximum GCV was recorded for grains/panicle (189.85%), followed by biological yield/plant (66.15%), grain yield per plant (18.98%), Spikelet fertility (17.02%), days to 50% flowering (15.58%). Degree of dominance was greater than the unity for majority of the traits, indicating the presence of over dominance gene action. The higher values of broad sense heritability (>75%) were observed for majority of traits, except panicle bearing tillers plant-1 (53.67%) and panicle length (54.97%) which showed moderate heritability. Higher estimates of heritability in narrow sense (h2ns) were reported for days to 50% flowering (34.54%) followed by Grains per panicle (25.15%) grain yield plant-1 (23.35%), biological yield plant-1 (22.44%), 1000 grain weight (14.13%) plant height (12.13%), harvest index (10.86%), spikelet fertility (10.24%). The higher values of genetic advance (GA) were recorded for grains per panicle (36.00%), followed by biological yield per plant (21.03%), grain yield per plant (11.27%), spikelet fertility (10.34%), days to 50% flowering (9.51%). The higher values of genetic advance as per cent of mean were observed for grain yield plant-1 (67.32%), followed by biological yield plant-1 (47.57%), grain panicle-1 (29.38%), harvest index (21.26%), panicle bearing tillers plant-1 (16.93%), 1000 grain weight (15.57%), spikelet fertility (12.45%), days to 50% flowering (9.76%), plant height (8.76%), panicle length (7.61%) while, it was lowest for flag leaf area (5.18%). Therefore, grains per panicle, biological yield per plant, grain yield per plant could be utilized as direct selection parameters to achieve high genetic gain under selection.
DOI: 10.22271/chemi.2020.v8.i2af.9064
Pages: 2117-2119 | 499 Views 110 Downloads
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How to cite this article:
Yogendra Singh, MP Chauhan, Anju Kumari, Kanhaiya Lal. Genetic variability, heritability and genetic advance estimates for different quantitative traits in Rice (Oriza sativa L.) under sodic soil condition. Int J Chem Stud 2020;8(2):2117-2119. DOI: 10.22271/chemi.2020.v8.i2af.9064
