Vol. 16 No. 3
Estimation of genetic variation and characters conglomeration for yield ascribing economic traits of rice (Oryza sativa L.)
Author(s): A. ROY, L. HIJAM, A. DAS, S. K. ROY, M. CHAKRABORTY, P.C. DEY AND N. SAHANA
Abstract: Twenty rice genotypes had been characterized to assess the yield attributing traits under the research programme in two different seasons, Pre-Kharif and Kharif following RBD with 3 replications. Statistical analysis was carried out to compute genotypic coefficient of variation, phenotypic coefficient variation, Broad Sense heritability and Genetic advance as percentage of mean for all the yield attributing traits. ANOVA, PCV and GCV revealed significant variations to all characters under study. All the Characters except grain length showed high heritability coupled with high genetic advance. Genotypic correlation studies revealed that days to 50% flowering was significantly correlated with yield. Path coefficient studies revealed that characters like plant height, days to 50% flowering, number of effective tillers plant-1, filled grain panicle-1, grain breadth, grain L:B ratio and harvest index had positive direct effect on yield. The study also revealed that the potentially high yielding genotypes were Piolee, Haripowasali, Borosolpana and Satyaranjan.
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