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 |
The present study is aimed to estimate general combining ability of the parents and specific combining ability of hybrids for fruit yield and its attributing traits in okra. Combining ability analysis revealed that the mean squares due to general and specific combining ability were important for inheritance of various traits. However, the magnitude of GCA variance were higher than SCA variance for most of the characters except number of internodes per plant, fruit weight, total sugar and total phenol indicating pre ponderance of additive type gene action for inheritance of these traits. This was further supported by high magnitude of σ2gca /σ2sca ratios. The general combining ability effects revealed that among females, JOL-11-12, AOL-03-1, Arka-Anamika and KS-404 were good general combiners for fruit yield per plant and most of their yield attributing traits, whereas among males GAO-5 was good general combiner for fruit yield per plant and its yield attributing characters. In the present study none of the cross combination was the best specific combinations for all the characters. However, eleven crosses appeared positive specific cross combinations for fruit yield per plant. Among these the hybrids viz., JF-55 x VRO-6, JF-108-02 x VRO-6 and JOL-11-12 x GAO-5 were found to be the best specific cross combinations and the use of heterosis breeding approach in these hybrids will be more rewarding. On the other hand, the hybrids JOL-13-07 x VRO-6, Arka-Anamika x VRO-6, JOL-11-12 x VRO-6 and JF-55 x GO-2 show low sca effect and involved poor combiners. These combinations may be useful for isolating the desired transgressive segregants.
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