Exploring the genetic variability, heritability, gene action for yield related traits and ToLCNDV resistance on F3 and F4 generations in cucumber [Cucumis sativus L.]
DOI:
https://doi.org/10.24154/jhs.v19i1.2594Keywords:
Gene action, heritability, kurtosis, skewness, variabilityAbstract
Cucumber is traditionally cultivated in India and is recognized as a primary centre of origin, belonging to the gourd family, Cucurbitaceae. The study focused on assessing genetic variability in F3 and F4 cucumber populations and examining correlations among various characters including ToLCNDV resistance. In both F3 and F4 generations, per cent disease index, fruit weight and vine length exhibited high heritability and genetic advance as per cent of mean. In F4 generation, yield per plant, fruit girth, fruit length, number of branches and number of fruits per plant also showed high heritability and genetic advance as per cent of mean. Yield related traits viz., sex ratio, number of fruits per vine, yield per plant and vine length exhibited complementary gene action. Days to first harvest and crop duration demonstrated negatively skewed distribution suggesting duplicate gene action and rapid genetic gain under selection. Leptokurtic distribution in yield per plant and associated traits implied the involvement of few genes for genetic inheritance of the above traits. Significant positive associations were found between yield per plant and number of fruits per plant, fruit weight and number of branches per plant suggesting potential early selection for these characters to enhance overall yield.
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Copyright (c) 2024 E Naveena, V Rajasree (Author); G Karthikeyan, T K Behara, M Kavitha, S Geethanjali, N Manikanda boopathi, D Rameshkumar
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