Genetic variability, correlation and path analysis studies in cauliflower (Brassica oleracea var. botrytis)
Keywords:
Cauliflower, correlation, heritability, genetic advance, path analysisAbstract
Fourteen cauliflower genotypes, including Palam Uphar as a standard check, were examined to determine parameters of variability, association and direct/indirect effects for marketable curd weight and its component traits. Analysis of variance showed significant differences among the genotypes for most of the traits. Based on marketable curd weight, DPCaf-SP2 significantly outperformed all genotypes though at par with DPCafCMS-4. Moderate GCV and PCV along with high heritability and moderate genetic advance were recorded for days to curd initiation, leaf length, leaf size index, marketable curd weight, gross plant weight, curd size index and harvest duration. Correlation studies revealed that marketable curd weight had a positive association with gross plant weight, curd diameter, net curd weight, curd size index, curd solidity, plant height, leaf size index, leaf length and harvest index at both genotypic and phenotypic levels. Path analysis indicated maximum positive direct effect of curd size index on marketable curd weight followed by gross plant weight, plant frame and harvest index at both phenotypic and genotypic levels signifying their effect on marketable curd weight. Based on these results, due consideration must be given on curd and leaf attributes for genetic improvement of cauliflower.Downloads
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