Pardeep Kumar M. K. Nautiyal Pankaj Kumar


The field experiment conducted with eighteen TGMS lines, seventy two F1’s and four checks in randomized complete block design with three replications at the Norman E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during Kharif 2013 and Kharif 2014. Estimates of variance of general combining ability were lower than those of variance of specific combining ability for all the traits e.g panicle number per plant (0.54), 1000 grain weight (1.50), harvest index (3.83) and grain yield per plant (17.09) showing preponderance of non-additive gene action except panicle length (1.28) and spikelet number per panicle
(522.70) which showed high gca and indicated additive gene action. High estimates of broad sense heritability coupled with high genetic advance in mean percentage for Spikelet number per panicle (98 and 27.23 respectively). For grain yield per plant (98 and 14.38) and grain number per panicle (97 and 19.93) high heritability coupled with moderate genetic advance (98 and 14.38) indicated the scope of getting better recombinants. Selection will be more effective for the traits those have high heritability and high genetic advance.


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Combing ability, Genetic advance, Heritability, Line×Tester, TGMS

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Kumar, P., Nautiyal, M. K., & Kumar, P. (2016). Gene action and component of genetic variance analysis in the thermo sensitive genetic male sterile (TGMS) line in rice (Oryza sativa L.). Journal of Applied and Natural Science, 8(4), 2011–2015. https://doi.org/10.31018/jans.v8i4.1079
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