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 choice of parents in a breeding programme for hybridization is one of the most critical considerations, since the selection on the basis of performance does not provide clear information. Combining ability, play a significant role in crop improvement, since they help in characterizing the nature and magnitude of genetic effects governing yield and component traits, besides pinpointing the promising parents to be used in the creation of genetic variability for eventual use in development of suitable varieties in self-pollinated crops. Hence, a study was undertaken to assess combining ability of crosses and their relationship with their parental general combining ability and elicit mode of action of genes controlling pod yield and its component traits in Dolichos bean using 12 lines and 4 testers. The 48 crosses (developed through Line × Tester combination) and their parents were evaluated for seed yield and its component traits during 2013 and 2014 kharif seasons at experimental plots of University of Agricultural Sciences, Bengaluru. Significant differences were found among the lines for all the traits and among testers for all the characters except for racemes plant-1, justifying the selection of parents. Further, greater magnitude of sca variance for most of the traits studied in both years indicates greater importance of non-additive gene action for the inheritance of these traits. The lines RIL 185, HA 10-8 and tester RIL 60 were considered as best general combiners for most of the traits studied irrespective of the years. While, the crosses involving the line RIL 185 followed by RIL 332 and tester RIL 60 exhibited desirable sca effects in both years for most of the traits.
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