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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - 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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(6): 2831-2843
DOI: https://doi.org/10.20546/ijcmas.2017.606.337


Detection of Gene Effects and Epistasis for Specific Physiological Traits to Develop Drought Resistant Cultivar
A.K. Singh1 and A.K. Mall2*
1ND University of Agriculture and Technology, Kumarganj, Faizabad-224 221 (U.P.), India
2ICAR-Indian Institute of Sugarcane Research, Lucknow-226 002 (U.P.), India
*Corresponding author
Abstract:

The ANOVA revealed significant differences among the six cross families for all the characters in E1 and E2 except for ATR in E2. Differences among the progenies within families were also significant for all the characters in the six crosses in E1 and E2. Simple scaling tests indicated presence of epistatic gene interactions and fitness of digenic interaction model for all the characters in most of the six crosses in both conditions. Across the six crosses, role of epistasis was comparatively more pronounced in E2 as compared to E1. The generation mean analysis revealed importance of additive (d) and/or dominance (h) gene effects as well as one or more of the epistatic gene interactions (i, j, l) for all the characters in most of the crosses in E1 and E2. However, nature and magnitude of gene effects and epistatic interactions for a character exhibited considerable variation across the six crosses and both conditions. The significance of additive gene effects for most of the sixteen characters in the six crosses under two conditions suggested substantial improvement in yield status can still be achieved in rice by using breeding procedures exploiting fixable components of genetic variance leading to development of pure-line varieties in rice for irrigated and drought condition. Significance of dominance gene effects and epistatic interactions for most of the traits in six crosses under two conditions indicated that exploitation of heterosis through hybrid varieties appears to be a potential alternative. The non-additive gene effects may also be utilized for facilitating development of pure-line cultivars by involving population improvement methods.


Keywords: Gene effects, Simple scaling test, Epistasis, Rice, Drought
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How to cite this article:

Singh, A.K., and Mall, A.K. 2017. Detection of Gene Effects and Epistasis for Specific Physiological Traits to Develop Drought Resistant Cultivar.Int.J.Curr.Microbiol.App.Sci. 6(6): 2831-2843. doi: https://doi.org/10.20546/ijcmas.2017.606.337