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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
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
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(6): 1-12
DOI: https://doi.org/10.20546/ijcmas.2020.906.001


Genetic Variability Studies in Gossypium barbadense L. Genotypes for Seed Cotton Yield and its Yield Components
N. Premalatha1*, L. Mahalingam1, M. Kumar2 and S. Rajeswari1
1Department of Cotton, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore – 641 003, India
2Technical and Personal officer to the Vice – Chancellor, TNAU, Coimbatore, India
*Corresponding author
Abstract:

A total of one hundred and sixty germplasm accessions of Gossypium barbadense were evaluated for sixteen traits to assess their per se performance, variability, heritability, genetic advance, correlation and path analysis. The analysis of variance had shown significant differences between the genotypes for all the traits indicating the presence of sufficient variability in the experimental material. Based on the per se performance and range in G. barbadense, the accessions viz., Giza 45, CCB-1, 26/5W, CBS 202, EC111248, 32/2R, SIA-9 and K 2308 exhibited desirable values for the characters viz., single plant yield, boll weight, seed index, Upper half mean length, fibre strength, micronaire value, uniformity ratio and elongation percentage. PCV was higher than the GCV for all the studied characters. This denotes that all the traits under the investigation were influenced by the environmental effects. High heritability along with high genetic advance was observed in traits like plant height, number of bolls per plant, seed index, lint index, boll weight, micronaire and single plant yield per plant. These characters need to be given more importance during selection as these traits were governed by additive genes and hence selection of genotypes based on these characters would be effective. Correlation studies revealed that single plant yield had highly positive significant association with number of sympodia per plant, number of bolls per plant and boll weight. Hence selection based on these characters will help in improving the seed cotton yield.


Keywords: Cotton, Gossypium barbadense L., per se performance, genetic variability, heritability and genetic advance
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How to cite this article:

Premalatha. N., L. Mahalingam, M. Kumar and Rajeswari. S. 2020. Genetic Variability Studies in Gossypium barbadense L. Genotypes for Seed Cotton Yield and its Yield Components.Int.J.Curr.Microbiol.App.Sci. 9(6): 1-12. doi: https://doi.org/10.20546/ijcmas.2020.906.001