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2024, Vol. 9, Special Issue 5

Studies on genetic variability, correlation and path analysis in Bt genotypes of cotton (Gossypium hirsutum L.)


Author(s): Bhale Aniket, Gaikwad AR, Kalpande HV, Baig KS, Chinchane VN, Kadam Hanuman and Aundhkar Pranav

Abstract: This experiment aimed to investigate genetic variability among 34 Bt genotypes of cotton (Gossypium hirsutum L.) along with heritability presence, genetic advance percent over mean, correlation and path coefficient studies for 13 different characters in all Bt genotypes including two checks viz., Rajat Bt and Suraj Bt. The trial was conducted at the Cotton Research Station, Nanded (Maharashtra) during Kharif 2023-2024. The Fibre quality traits were analyzed at CIRCOT, Nagpur. The genotypic coefficient of variation was lower than phenotypic coefficient of variation. Variability studies revealed moderate estimates of GCV and PCV for plant height, seed cotton yield per plant, number of sympodia per plant, fibre fineness, boll weight and lint index and high estimates of PCV for number of bolls per plant. Heritability analysis showed high heritability for various traits, including days to 50% flowering, plant height, sympodia per plant, number of bolls per plant, boll weight, lint index, seed cotton yield, seed index, fiber strength and fiber fineness. Moreover, plant height, number of sympodia per plant, number of bolls per plant, boll weight, lint index and seed cotton yield per plant demonstrated both high heritability and significant genetic advance as percent over the mean. This stipulate significant attributing part of additive gene action in the heredity of these characteristics and phenotypic selection may be more productive and effective for desired genetic improvement. During the correlation study, it was found that seed cotton yield per plant showed noteworthy positive correlations with several traits like plant height (0.35), the number of bolls per plant (0.71), seed index (0.42) and lint index (0.55) and ginning% (0.57). Path analysis revealed that the trait number of bolls per plant had exerted highest and positive direct effect on seed yield per plant at both genotypic level and phenotypic level.

Pages: 251-258 | Views: 94 | Downloads: 6

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How to cite this article:
Bhale Aniket, Gaikwad AR, Kalpande HV, Baig KS, Chinchane VN, Kadam Hanuman, Aundhkar Pranav. Studies on genetic variability, correlation and path analysis in Bt genotypes of cotton (Gossypium hirsutum L.). Int J Stat Appl Math 2024;9(5S):251-258.

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