Genetic diversity studies in turnip (Brassica rapa L) under low hills of Himachal Pradesh

The present investigations were carried out at the vegetable research farm of the Department of Vegetable Science, College of Horticulture and Forestry, Neri, Hamirpur, Himachal Pradesh during rabi 2020. Twelve genotypes were evaluated in randomized complete block design with 3 replications to know the extent of variability, heritability and genetic advance as per cent of mean for average root yield with leaves and other horticulture traits among the genotypes. Analysis of variance showed significant differences among all the genotypes for all the characters under study. Best genotype in terms of average root yield with leaves was Pusa Sweti (200.66 g) along with T-COHF-NERI-5 (185.77 g). The traits viz leaf area, root-shoot ratio, plant spread and ascorbic acid content expressed high GCV and PCV values. High heritability was exhibited by the trait duration of availability of marketable roots followed by days to first harvest and ascorbic acid content. However high genetic advance as percentage of mean was observed for the trait root-shoot ratio followed by plant spread, ascorbic acid content, duration of availability of marketable roots and average root yield with leaves.