Vol. 7, Issue 6 (2019)
Deciphering the estimates of combining ability and heterosis for yield and quality traits through line × tester analysis in basmati rice (Oryza sativa L.)
Author(s): Deepayan Roy, Indra Deo, Babita Kohli and Kuldeep Nagar
Abstract: Nine lines and three testers were crossed in Line × Tester mating design during kharif season 2017 in Norman E. Borlaug Crop Research Center, GBPUAT, Pantnagar. In kharif season 2018, field experiment with 39 genotypes comprising 12 parents and 27 F1s was laid down in randomized block design with three replications. Sixteen characters including yield and quality parameters were taken under study. Among lines UPR-3716-27-1-1 emerged as a good general combiner for the maximum number of traits. Among the testers, Taraouri Basmati and Lal Basmati was found good general combiners. UPR-3709-11-1-1 ×Lal Basmati, Pusa Sugandh Dhan 4 ×Sugandhmati and Hariyana Basmati ×Sugandhmati was identified as the best specific combination for most of the traits and Pusa Sugandh Dhan 4 ×Sugandhmati was identified as the best specific combination for grain yield plant-1. Relative heterosis, heterobeltiosis and standard heterosis was estimated for all the characters among which for grain yield Hariyana Basmati ×Sugandhmati and Basmati 370 ×Taraouri Basmati excelled over maximum levels. Basmati 370 ×Sugandhmati and UPR-3506-7-1-1 ×Taraouri Basmati was identified as best heterotic combination at different levels for maximum traits like, days to 50% flowering, hulling recovery, grain yield plant-1 etc.
Pages: 2233-2241 | 230 Views 63 Downloads
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How to cite this article:
Deepayan Roy, Indra Deo, Babita Kohli, Kuldeep Nagar. Deciphering the estimates of combining ability and heterosis for yield and quality traits through line × tester analysis in basmati rice (Oryza sativa L.). Int J Chem Stud 2019;7(6):2233-2241.
