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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2015: 85.95
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95
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 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(4): 851-858
DOI: https://doi.org/10.20546/ijcmas.2017.604.106


Genetic Architecture, Combining Ability and Gene Action Study in Okra [Abelmoschus esculentus (L.) Moench]
Tapas Paul1*, R.T. Desai2 and R. Choudhary3
1Department of Genetics and Plant Breeding, ICAR Res. Complex for NEH Region,Tripura Centre, Lembucherra 799210, India
2Department of Genetics and Plant Breeding, Navsari Agricultural University, Navsari,Gujarat 396450, India
3Department of Genetics and Plant Breeding, G.B. Pant University of Agriculture and Technology, Pantnagar, India
*Corresponding author
Abstract:

A study was conducted in okra to estimate the magnitude of gene action involved and to identify the good combiner for fruit yield and other yield attributing characters. 55 okra hybrids derived by crossing of 11parents in diallel mating design excluding reciprocals were studied to assess the combining ability and gene action. The general and specific combining ability variances were significant for all the traits except sca mean square for fruit weight. The σ2gca and σ2sca ratio indicated that both additive and non-additive gene action was predominant for the inheritance of different traits. The estimates of general combining ability effects suggested that parents HRB-55 (21.195**), AOL-09-17 (30.008**), AOL-09-2 (10.679**) and JOL-09-7 (1.288**) were good general combiners for fruit yield per plant and its related attributes. The analysis of variance for specific combining ability indicates sufficient variation was there among cross combinations for yield and related traits. The estimates of specific combining ability effects indicated that cross combinations JOL-55-3 x HRB-55 (56.786**), JOL-09-8 x JOL-09-7 (46.346**) and JOL-09-8 x AOL-09-17 (46.110**) were most significant for fruit yield per plant and related traits. Present investigation indicates sufficient scope of exploitation of heterosis using the parents and crosses.


Keywords: Combining ability, GCA, SCA, Gene action, Yield, Okra
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How to cite this article:

Tapas Paul, R.T. Desai and R. Choudhary. 2017.  Genetic Architecture, Combining Ability and Gene Action Study in Okra [Abelmoschus esculentus (L.) Moench].Int.J.Curr.Microbiol.App.Sci. 6(4): 851-858. doi: https://doi.org/10.20546/ijcmas.2017.604.106