Genetic variability and correlation studies for some quantitative traits in cabbage (Brassica oleracea var. capitata L.) under Lucknow conditions

The present investigation on genetic variability and correlation studies were carried out in 30 diverse genotypes of cabbage (Brassica oleracea var. capitata L.). The study showed high range for yield (11.10 - 56.60), days to maturity (71.28–110.53) and leaf length (15.95 - 46.02). The highest estimates of PCV and GCV were for stalk length (PCV = 40.42, GCV = 39.21) and low for leaf width (PCV = 21.51, GCV = 21.12). High estimates of heritability were noticed for yield (98.90%) while gross weight (78.60%) showed low heritability estimates. High heritability in broad sense indicated that large proportion of phenotypic variance was attributable to the genotypic variance and were less influenced by environment. High % of genetic gain was observed for yield (75.54%) whereas it was low for days to maturity (21.10%) and polar length (33.16%). Positive and significant association of yield was observed with all the characters except days to maturity and stalk length at both genotypic and phenotypic level which indicates that selection based on these characters either in combination or alone will result in identifying the genotypes having high yield potential. Therefore, these should be considered as selection criteria for yield improvement in cabbage breeding.