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 |
Combining ability effects of yield and its components in okra were studied through full diallel analysis of 66 F1 hybrids derived by crossing 12 nearly homozygous germplasm lines viz., IC- 45831, IC- 282272, IC- 43733, IC- 43750, IC- 45802, Sel – 4, Pusa Mukhmali, Parbhani Kranti, VRO- 3, Sel – 10, Pusa A-4 and SB – 8 and by using Arka Anamika as check. Out of these 12 genotypes, IC-45802, Parbhani Kranti and VRO-3 exhibited highest significant GCA effect for fruit yield per plant (g) and subsequent fruit yield per hectare (q). High GCA effects were attributed to additive or additive x additive gene effects, which represent the fixable genetic components of variance. Of the top three cross combinations showing positively significant SCA effects for total fruit yield per plant and fruit yield per hectare were, IC-45802 × SB-8 (49.85), IC-45802 × Pusa A-4 (48.46) and IC-282272 × Sel-4 (48.07). The first two crosses involved high x low general combiners as parents, while the remaining cross involved low x low general combiners as parents. High performance of these crosses may be attributed to additive x additive (high x high), additive x dominance (high x low) or dominance x dominance (low x low) epistatic interactions. Superiority of the cross combinations involving high x low or low x low general combiners as parents may be attributed to the genetic diversity in the form of number of heterozygous loci of the parents involved in the cross combinations
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