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Paper Details

Genetic variability, heritability and correlation studies in tomato genotypes (Lycopersicon esculentum Mill.)


Journal Title:International Journal of Agricultural Sciences

Genetic variability, heritability, genetic advance and correlation for different yield contributing characters were studied in 19 genotypes of tomato. Significant differences were observed among the genotypes for all the traits. The phenotypic co-efficient of variation (PCV) was higher than genotypic co-efficient of variation (GCV) for all the traits.Traits like plant height 120 DAT, number of branches 120 DAT, number of fruits per plant, average fruit weight, number of cluster per plant, fruit set (%), radial diameter and polar diameter (mm), ascorbic acid (vitaC), TSS (Brix), showed positive correlation with fruit yield per ha, plant height after 120 DAT, days to 50 per cent flowering, leaf curl incidence and intensity showed negative correlation at both phenotypic and genotypic level. Genetic advance at 5 per cent was found high for plant height after 120 DAT, number of fruits per plant, ascorbic acid and fruit yield per plant(g). Where as genetic advance as per cent of mean at 5 per cent was noticed high for all the traits except days to flower initiation and days to first harvest. Number of fruits per plant exhibited the highest positive direct effect followed by days to flower per cent, ascorbic acid content, plant height 120 DAT and fruit diameter at genotypic level. In view at the direct and indirect contributions of component traits towards fruit yield per plant, selection on the basis of horticultural traits viz., average fruit weight and number of fruits per plant would be a paying preposition in the genotypes included in the study