Vol. 8, Special Issue 3 (2019)
Study on selection parameter in rice genotypes
Author(s): Akhilesh Kumar Yadav, RP Vyas and VK Yadav
Abstract: Eighty four genotypes (including four checks) of rice (Oryza sativa L.) were evaluated for performance, variability, heritability and genetic advance for yield and yield contributing character under saline-alkaline soil conditions. The best genotypes in order of merit for higher grain yield per plant were recorded as IR59418-7B-21-3(38.38g), Swarna Sub-1(32.41), NDR-359(32.64g), IR79218-63-2-3-1(30.46), Narendra dhan-2064(29.20g), Swarna (27.03g), NDRK-50002(27.61g), Pant dhan-4(27.15g), NDRK-50007(26.53g), and TR2005-041(26.31g). The high estimates of phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were observed for panicle bearing tillers per plant, grain yield per plant, L: B ratio and moderate estimates of PCV and GCV were recorded for Biological yield per plant, plant height, harvest index kernel length, spikelet per panicle, kernel length after cooking, kernel breadth and test weight. High value of heritability in broad sense was observed for all the characters (except spikelet fertility). The highest value was obtained for panicle bearing tillers per plant, harvest index, grain yield per plant, L:B ratio, spikelet per plant, Biological yield per plant, plant height, days to 50% flowering, kernel length after cooking, panicle length, kernel birth, test weight, kernel elongation ratio and spikelet fertility. The high genetic advance in per cent of mean were recorded for the panicle bearing tillers per plant, followed by grain yield/plant, L:B ratio, Biological yield per plant, harvest index, plant height, spikelet per panicle, kernel length after cooking, kernel length, days to 50% flowering, kernel breadth, panicle length, test weight, Kernel elongation ratio and spikelet fertility while spike fertility was expressed low magnitude of genetic advance.