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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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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(8): 1095-1103
DOI: https://doi.org/10.20546/ijcmas.2020.908.120


Investigation of Combining Ability and Gene Action for Seed Yield and its Component Traits in Pigeonpea [Cajanus cajan (L.) Millspaugh]
Hiren S. Patel1*, A. M. Patel2, Naresh B. Chaudhary1, P. C. Patel1 and Y. A. Viradiya3
1Department of Genetics and Plant Breeding, S. D. Agricultural University, Sardarkrushinagar, Gujarat, India
2Seed Spices Research Station, S. D. Agricultural University, Jagudan, Gujarat, India
3Department of Seed Technology, S. D. Agricultural University, Sardarkrushinagar,
Gujarat, India
*Corresponding author
Abstract:

To ascertain combining ability and genetic variance of thirteen quantitative characters by evaluating forty hybrids developed by line x tester mating design using ten females and four males in pigeonpea. Analysis of variance for combining ability revealed that variance due to parents (ó2 gca) were found significant for majority of the traits under study except seed yield per plant and variance due to hybrids (ó2 sca) were found significant for all the traits under study, which indicates the presence of both additive and non additive gene action. A perusal of variance ratio (ó2gca / ó2sca) was less than unity suggested the preponderance of non additive genetic variance for all the characters except days to maturity. Based on estimates of general combining ability effects for various characters, the five parents were CMS GT 1603 A, CMS GT 1616 A, CMS GT 288 A, CMS GT 307 A and GTR 97 were found good general combiners for seed yield and its contributing traits. Therefore these parents were noted as good source of favourable genes for increasing seed yield through various yield contributing characters. The estimates of SCA effects revealed that out of forty hybrids, twelve hybrids registered significant positive SCA effects for seed yield per plant. The best five hybrids on the basis of significant positive SCA effects for seed yield per plant were CMS GT 288 A x GTR 55, CMS GT 1616 A x GTR 55, CMS GT 1002 A x GTR 97, CMS GT 1402 A x GTR 18 and CMS GT 1602 A x GTR 23. On the basis of mean performance and specific combining ability for seed yield per plant and its component traits the hybrid CMS GT 288 A x GTR 55 was found most promising. Therefore it needs to be exploited in future breeding programme of pigeonpea.


Keywords: Combining ability, gene action, GCA effects, SCA effects
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How to cite this article:

Hiren S. Patel, A. M. Patel, Naresh B. Chaudhary, P. C. Patel and Viradiya, Y. A. 2020. Investigation of Combining Ability and Gene Action for Seed Yield and its Component Traits in Pigeonpea [Cajanus cajan (L.) Mills paugh].Int.J.Curr.Microbiol.App.Sci. 9(8): 1095-1103. doi: https://doi.org/10.20546/ijcmas.2020.908.120