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 for yield, its contributing traits and heat tolerance traits was studied in 17 parental genotypes (14 lines, 3 testers) in a line x tester scheme in timely and late sown condition and pooled environment. The purpose of the study was to identify and select superior parents and best hybrid combinations on the basis of general and specific combining abilities. The differences among genotypes were highly significant for all the characters studied. Estimates of variance due to general combining ability (gca) and specific combining ability (sca) and their ratio revealed that both additive and non-additive gene effects were important for different characters studied. The estimates of gca effects as a whole suggested that most of the traits are to be improved through hybridization and selection, the priority should be given to parents BAV 92 in timely sown condition, VL 944 in late sown condition and PBW 644 in pooled condition among the lines. PBW65*/PASTOR x DPW 621-50 was the best specific cross in timely sown condition, BAV 92 x UP 2572 in late sown condition and HD 2888 x DPW 621-50 in pooled condition for most of the traits.
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