Early Generation Selection of Lines Suitable for Yield and Earliness in Cauliflower Brassica oleracea var botrytis L

Abstract

Cauliflower is a thermo-sensitive cool season vegetable crop. On the basis of temperature requirement to curd initiation the crop is grouped into early, mid and late cauliflower. The hybrid is most important as because of uniform maturity, compacted curd, and resistant to environmental stresses. Very few hybrids are available for cultivation in early group of cauliflower. Inbreeding programme in cauliflower is tedious, labour intensive and costly that slower down the effectiveness of hybrid breeding programme. To reduce these problems, Jenkin (1935) had been proposed a technique to early generation testing in genotypes during inbreeding based on GCA estimation. In the present experiment 19 S2 generation lines were tested for combining ability analysis using line x tester mating design with two testers namely Sabour Agrim and Pusa Kartik Sankar. The experiment was laid out in Randomised Block Design with a spacing of 50x 50 cm in two replications with two dates of planting. newline