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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 2
First page : (43) Last page : (53)
Article doi: : http://dx.doi.org/10.18782/2582-2845.7975

Combining Ability and Heterosis Analysis for Green Fodder Yield in Oat (Avena sativa L.)

Atar Singh^1*, Akash Singh², Prafull Kumar³, Chiranjeev⁴ and Pooja Tiwari^5
1,2,4,5Department of Genetics and Plant Breeding
³Department of Agricultural Biotechnology
Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut-250110 (U.P.) India
*Corresponding Author E-mail: atars49@gmail.com
Received: 25.02.2020  |  Revised: 30.03.2020   |  Accepted: 4.04.2020 

 ABSTRACT

Thirty F1s obtained by crossing ten lines and three testers selected from oat germplasm were evaluated along with parents in RBD during winter season of 2017-18.  The observations were recorded on eleven metric characters. Analysis of variance showed significant variability among the parents and hybrids for all character under study indicated that the wide spectrum of variation among the parents and crosses. Analysis of variance among lines and testers with respect to gca and sca of crosses was observed significant differences for all traits. Both additive and dominance genetic variances were involved in the determination of these traits. Lines namely, CSAOFSC12-2, CSAOFSC, JHO3-91, OS344, OS1, CSAOFSC11-4, CSAOFSC11-1, ANDO1, NDO25 and CSAOFSC12-1 which having high gca effects in desirable direction for seed yield and yield components characters may be incorporated in crossing programme to have better genotypes for better yield. The good specific combinations were OS1x ANDO2, JHO3-91 x ANDO2, OS344 x ANDO2, CSAOFSC11-5 x ANDO2, CSAOFSC12-2 x ANDO2, ANDO1 x JHO2007-2 and CSAOFSC11-4 x ANDO2 for different traits. These crosses may be utilized for obtaining transgressive sergeants in the next generation for the selection in oat improvement programme. Highest significant and positive heterosis for seed yield per plant was shown by  OS344 x ANDO2 followed by CSAOFSC11-4 x Kent, OS344 x Kent ANDO1 x JHO2007-2 and CSAOFSC11-4 x ANDO2 may be used in heterosis breeding programme for enhancement in seed yield per plant.

Keywords: Oat, Line x tester analysis, Combining ability, SCA, GCA and Heterosis.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Singh, A., Singh, A., Kumar, P., Chiranjeev, & Tiwari, P. (2020). Combining Ability and Heterosis Analysis for Green Fodder Yield in Oat (Avena sativa L.), Ind. J. Pure App. Biosci. 8(2), 43-53. doi: http://dx.doi.org/10.18782/2582-2845.7975