Heritability and genetic advance for yield and yield related attributes in F2 rice populations
Paper Details
Heritability and genetic advance for yield and yield related attributes in F2 rice populations
Abstract
This study was performed to assess genetic variation, heritability and genetic advance for yield and yield associated traits using sixteen rice genotypes. Four parents and their 12 F2 populations were grown in a randomized completed block design using three replications at Peshawar-Pakistan during 2012 rice crop growing season. The analyses of variance showed significant differences among the genotypes for all the studied traits. F2 populations Kashmir-Basmati/TN-1 and Kangni-27/TN-showed maximum 100-grain weight (2.9 g) while F2 population Dilrosh/TN-1 produced the highest grain yield plant-1 (38.3 g). The highest heritability for 100-grain weight (0.82) was observed for F2 population Kangni-27/TN-1 whereas F2 population Dilrosh/Kashmir-Basmati displayed maximum heitability for grain yield (0.95). F2 populations Dilrosh/Kashmir-Basmati and Kashmir-Basmati/Kangni-27 displayed the highest genetic advance values for 100-grain weight (50.5%) and grain yield (82%), respectively. On the basis of superior performance for yield traits, F2 populations Dilrosh/TN-1, Kashmir-Basmati/TN-1, Kangni-27/TN-1, Dilrosh/Kashmir-Basmati and Kashmir-Basmati/Kangni-27 could be advanced further to develop desirable rice recombinant inbred lines and cultivars.
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