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 |
Genetically designed analyses for combining abilities, heterosis, genetic advance and heritability were made utilizing line x tester mating design having fourteen divergent parents under multiple environments. Significant mean squares for general combining ability (GCA) and specific combining ability (SCA) indicated joint role of additive and non-additive gene action for most of the characters. The predictability ratio of σ2 gca /σ2 sca was less than 1for all the characters showing preponderance of non-additive gene actions. Based on the GCA effects of parents, VIO 47672 among lines and GJO – 3 among testers were observed to be the best overall general combiners for yield and yield components. The outstanding five hybrids viz., VIO 47672 x GJO – 3, IC – 045796 x GJO – 3, IC – 111493 x GJO – 3, IC – 045796 x GAO – 5 and VIO 47672 x GAO – 5 were identified for developing high yielding F1 hybrids of Okra with many desirable traits based on their SCA and heterosis effects. Assessment of heritability percentages in the narrow sense (h2ns; %) for the various studied traits, were found to be within the range of 4.19% for the first flowering node to 46.33% for fruit weight. On the other hand GAM (%) ranged between 0.93% for the first flowering node and stalk length to 30.42% for the number of branches.
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