National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A study was conducted in okra to estimate the magnitude of gene action involved and to identify the good combiner for fruit yield and other yield attributing characters. 55 okra hybrids derived by crossing of 11parents in diallel mating design excluding reciprocals were studied to assess the combining ability and gene action. The general and specific combining ability variances were significant for all the traits except sca mean square for fruit weight. The σ2gca and σ2sca ratio indicated that both additive and non-additive gene action was predominant for the inheritance of different traits. The estimates of general combining ability effects suggested that parents HRB-55 (21.195**), AOL-09-17 (30.008**), AOL-09-2 (10.679**) and JOL-09-7 (1.288**) were good general combiners for fruit yield per plant and its related attributes. The analysis of variance for specific combining ability indicates sufficient variation was there among cross combinations for yield and related traits. The estimates of specific combining ability effects indicated that cross combinations JOL-55-3 x HRB-55 (56.786**), JOL-09-8 x JOL-09-7 (46.346**) and JOL-09-8 x AOL-09-17 (46.110**) were most significant for fruit yield per plant and related traits. Present investigation indicates sufficient scope of exploitation of heterosis using the parents and crosses.
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