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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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Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(3): 813-822
DOI: https://doi.org/10.20546/ijcmas.2018.703.095


Assessment of Genetic Variability in Cucumber (Cucumis sativus L.)
Chandan Singh Ahirwar* and D.K. Singh
Department of Vegetable Science, G.B. Pant University of Agriculture and Technology, Pantnagar, (Uttarakhand)-263145, India
*Corresponding author
Abstract:

The present experiment was carried out at vegetable research center, G B Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during the July-October, 2014 and February-June, 2015 in randomized block design with three replications to assess genetic variability, heritability and genetic advance as percent of mean for various yield and its contributing traits. data were recorded on days to first male flowers, node number to first male flower, days to first female flowers, node number to first female flower, internodal length, days to first fruit harvest, number of fruits per plant, fruit length, fruit diameter, fruit weight, test weight, seed index, primary branches per plant, plant height total fruit yield per hectare. Analysis of variance revealed significant differences among the genotypes for all the traits studied indicating the presence of sufficient variability in the studied material. The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) and the difference between PCV and GCV was narrow for most of the characters revealing little influence of the environment in the expression of these traits. During first season, phenotypic coefficient (PCV) of variation was highest for fruit length (32.52), in second season, was highest for yield (38.58) and pooled analysis was highest for yield (33.50) was recorded. During first season, genotypic coefficient (GCV) of variation was highest for fruit length (30.04), in second season, was highest for yield (38.47) and pooled analysis was found moderate for characters, namely, fruit length (27.65) was recorded. The range of heritability in broad sense varied from days to first male flowers (40.91) to fruit weight (98.51) in first season, yield (99.44) to seed index (67.18) in second season and in pooled analysis fruit weight (g) (88.85) to primary branches per plant (25.31). Genetic advance as percentage of mean were found highest for fruit length (57.16), yield (79.03) and highest for fruit length (52.15) in first season, second season and pooled analysis data was recorded respectively. It may be concluded that the existence of wide range of genetic variability in the genotypes for these traits. revealed these traits are under the control of additive gene action and lower influence of environmental factor in the expression of these traits with possibility for genetic improvement through simple selection.


Keywords: Cucumber (Cucumis sativus L.), Variability, PCV, GCV, Heritability, Genetic advance
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How to cite this article:

Chandan Singh Ahirwar and Singh, D.K. 2018. Assessment of Genetic Variability in Cucumber (Cucumis sativus L.).Int.J.Curr.Microbiol.App.Sci. 7(3): 813-822. doi: https://doi.org/10.20546/ijcmas.2018.703.095