Vol. 11, Issue 1 (2022)

Author(s):
PK Yadav, PK Singh and OP Verma

Abstract:
The experimental materials of rice for this investigation was comprised of 22 genotypes as lines (female) and three testers (male) viz., Narendra Usar 3, NDR 359 and CSR 36. Each of three testers was crossed with 22 lines during kharif, 2013. The experiment was based on evaluation of a line × tester set of 66 hybrids (F₁s) along with their 22 parents and two check varieties viz., Narendra Usar 3 and Arize 6444, in order to assess twelve characters viz., days to 50% flowering, flag leaf area, (cm²), plant height (cm), panicle bearing tillers per plant, panicle length (cm), spikelets per panicle, spikelet fertility (%), biological yield per plant (g), harvest index (%), L:B ratio, 1000-grains wt. (g) and grain yield per plant (g) under salt affected soil following randomized block design with three replications. The analysis of variance revealed that all the treatments, parents, parent vs crosses, crosses, lines and lines x testers were highly significant for majority of the yield and its contributing traits which indicated sufficient variation among the treatment/materials under study. In general, PCV were higher than the GCV for all the characters under salt affected soil which indicated influence of environment. High heritability coupled with high genetic advance in per cent of mean were observed for flag leaf area, panicle bearing tillers per plant, spikelets per panicle, grains per panicle, biological yield per plant, L:B ratio and grain yield per plant it indicating the preponderance of additive gene action. Hence, emphasis should be given to select these quantitative traits to enhance the yield potential of rice (Oryza sativa L.) under salt affected soil.