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 and gene action for yield and yield contributing traits was studied in 13 parental genotypes (5 lines, 8 testers) in a line x tester scheme during rabi, 2017-18. The purpose of the study was to identify and select superior parents and best hybrid combinations on the basis of estimates 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 preponderance of non-additive gene action for different characters studied. The estimates of gca effects as a whole suggested that if most of the traits are to be improved through hybridization and selection, then priority should be given to parents NIAW-1994 from among the lines and Among male parents, CG-1021, PBN-4357 and UAS-379 were found to be good general combiners for seeds yield per plant, there by classifying these parents as good sources of favorable genes for increasing production of seed yield per plant. The estimates of specific combining ability effects revealed that highest SCA effect for grain yield per plant was exhibited by crosses, HD-2932 x UAS-379 followed by HD-2932 x PBN-4357 and NIAW-1994 x CG-1021.
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