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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

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

Int.J.Curr.Microbiol.App.Sci.2018.7(1): 1442-1450
DOI: https://doi.org/10.20546/ijcmas.2018.701.175


Hybrid Specific Combining Ability in Relation to Parental General Combining Ability in Dolichos Bean (Lablab purpureus L.)
C.M. Keerthi1*, S. Ramesh1, M. Byregowda2 and A. Mohan Rao1
1Department of Genetics and Plant Breeding, University of Agricultural Sciences (UAS), GKVK, Bangalore-560 065, Karnataka, India
2All India Coordinated Research Project on Pigeonpea, ZARS, UAS, Bangalore-560 065, Karnataka, India
*Corresponding author
Abstract:

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.


Keywords: Combining ability, Dolichos bean, Gene action, per se performance
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How to cite this article:

Keerthi, C.M., S. Ramesh, M. Byregowda and Mohan Rao, A. 2018. Hybrid Specific Combining Ability in Relation to Parental General Combining Ability in Dolichos Bean (Lablab purpureus L.).Int.J.Curr.Microbiol.App.Sci. 7(1): 1442-1450. doi: https://doi.org/10.20546/ijcmas.2018.701.175