International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 3
First page : (863) Last page : (870)
Article doi: http://dx.doi.org/10.18782/2320-7051.2967
Estimation of Heterosis and Combining Ability in Oats (Avena sativa L.) for Green Fodder Yield and Attributing Traits using Line X Tester Design
Rahul Kapoor1* and Gagandeep Singh2
1Assistant Forage Breeder, 2Project Fellow
Department of Plant Breeding and Genetics, PAU, Ludhiana
*Corresponding Author E-mail: rahulkapoor@pau.edu
Received: 10.05.2017 | Revised: 21.05.2017 | Accepted: 22.05.2017
ABSTRACT
Forty F1 hybrids which were obtained by crossing eight lines and five testers selected from oat germplasm available at Forage Research farm, PAU, Ludhiana were evaluated along with parents in RBD during Rabi 2016-17. Analysis revealed significant gca and sca mean squares for most of the traits, however non-additive gene action was found to be more predominant as variances due to sca were higher than gca variances. Among female parents OS-403 showed significant positive gca effects for green fodder yield, number of leaves, number of tillers, stem girth and number of leaves on main shoot. The male parent OL-125 was best general combiner for green fodder yield whereas OL-1760 was good general combiner for green fodder yield, number of leaves, leaf length, number of tillers, flag leaf length and number of leaves on main shoot. The best specific combinations were OS-403 x OL-125, OL-1842 x OL-9,OS-403 x OL-9, Kent x OL-1892, OL-1869 x OL-9 and OS-403 x OL-1760 for different traits. Highest significant and positive heterosis for green fodder yield (1702.1%) was shown by F1 OS-403 x OL-125 followed by OS-403 x OL-1760.
Key words: Oat, Line x tester, Combining ability, SCA, GCA.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Kapoor, R. and Singh, G., Estimation of Heterosis and Combining Ability in Oats (Avena sativa L.) for Green Fodder Yield and Attributing Traits using Line X Tester Design, Int. J. Pure App. Biosci.5(3): 863-870 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2967
