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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 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(5): 473-483
DOI: https://doi.org/10.20546/ijcmas.2019.805.056


Studies on Genetic variability, Heritability and Genetic Advance in Groundnut (Arachis hypogaea L.) Genotypes under Normal and Osmotic Stress in In vitro Condition
M. Shankar1*, B.N. Harish Babu2, R. Gobu1 and Sheshaiah1
1College of Agriculture, Shivamogga, University of Agricultural and Horticultural Sciences, Shivamogga, Karnataka, India
2College of Horticulture, Hiriyur, Chitradurga (Dist), University of Agricultural and Horticultural Sciences, Shivamogga, Karnataka, India
*Corresponding author
Abstract:

The present investigation was carried out in 49 groundnut genotypes to assess the nature and extent of genetic variability, heritability and genetic advance under normal (0 % polyethylene glycol-6000 as control) and osmotic stress condition (15 % polyethylene glycol-6000) in germination phases in three replications in a completely randomized design. The observations on germination per cent, root length, shoot length, fresh weight of seedlings and total dry matter were recorded on tenth day after incubation. Further, seed vigour, root to shoot ratio, root length stress tolerance index and plant height stress tolerance index were computed to understand the drought tolerance ability of the genotypes. The results of the analysis of variance for all the characters studied were found to be highly significant in both the conditions indicating the availability of huge variability. A high range of variation and high heritability coupled with high genetic advance was recorded for most of the traits. This indicates the broad genetic base and less environmental influence which specifies the predominance of genetic factor controlling variability. Hence, early generation selection schemes would be effective for improvement and there is an ample scope for isolation of promising lines from the present gene pool for drought tolerance.


Keywords: Groundnut, PEG-6000, GCV, PCV, Heritability, Drought tolerance
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How to cite this article:

Shankar, M., B.N. Harish Babu, R. Gobu and Sheshaiah. 2019. Studies on Genetic variability, Heritability and Genetic Advance in Groundnut (Arachis hypogaea L.) Genotypes under Normal and Osmotic Stress in In vitro Condition.Int.J.Curr.Microbiol.App.Sci. 8(5): 473-483. doi: https://doi.org/10.20546/ijcmas.2019.805.056