Study of magnitude of genetic variability for yield and yield attributing traits among local cucumber genotypes

Abstract

For finding some superior lines of local cucumber types available in Northern Karnataka, eleven local cucumber lines along with two Private sector varieties were evaluated at Main Agricultural Research Station, College of Agriculture, Dharwad. They were grown in a Randomized Block Design to study different parameters of variability like GCV and PCV, heritability, genetic advance etc.The genotypes exhibited significant differences for almost all the traits under study. The mean of sum squares were highly significant for all traits except node of first female flower bloom, indicating the presence of wide range of variability in the genotypes. The range of variation was high for characters like fruit weight, vine length, fruit length and days to first male and female flower bloom. The difference between PCV and GCV was negligible for all the characters except node of first female bloom representing that the characters (except node of first female bloom) are not much influenced by environment. High heritability and high expected genetic gain were observed for days to 1st male and female flower bloom, days to first fruit harvest, fruit yield per hectare, fruit length, fruit girth, fruit weight, vine length, no of branches per vine, internodal length, sex ratio indicating that these characters had additive gene effect and therefore are more reliable for effective selection.