Vol. 7, Issue 1 (2019)
Evaluation of combining ability and genetic variance for growth traits in Bauhinia variegata L.
Author(s): Tesfaye Ashine and IK Thakur
Abstract: The present investigation was undertaken to study the combining ability and genetic variance for growth traits in Bauhinia variegata. In this study 6 lines (female) genotypes (P3, P8, P16, P24, P27 and P32) and 4 testers (male) genotypes (P12, P13, P14 and P17) were crossed using line x tester mating design and their 24 F1 hybrids were raised in the mist chamber of the Department of Tree Improvement and Genetic Resources, Dr. Y S Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) during 2017-2018. After 6 months the resulting progenies were evaluated for growth traits in a randomized complete block design with three replications at nursery stage. ANOVA suggested significant differences among lines and testers on most studied characters. Among lines P16 followed by P32, P27 and P3 were identified as promising good general combiners for growth traits with significant positive general combining abilities (GCA). Among testers P17 followed by P14 provided good GCA for most of the traits studied. Crosses P16 × P14, P32 × P17 and P3 × P17 exhibited best specific combining ability (SCA) for the majority of growth and biomass traits. The ratio of σ²gca/σ²sca which was less than unity in most of the traits and more than unity in others suggested the important role of both additive and non-additive gene actions in the inheritance of these characters with preponderance of non-additive gene actions.
Pages: 1681-1685 | 341 Views 62 Downloads
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How to cite this article:
Tesfaye Ashine, IK Thakur. Evaluation of combining ability and genetic variance for growth traits in Bauhinia variegata L.. Int J Chem Stud 2019;7(1):1681-1685.
