Heritability (BS) and selection response estimates for yield and yield related traits in Brassica napus L.

Broad sense heritability and selection response were measured among fifteen rapeseed (brassica. napus l. genotypes for seed yield and yield related traits during 2010-2011 at the university of agricultural,peshawar. the experiment was designed in randomized complete block with three replications. broad sense heritability estimates were higher (>60%) for primary branches plant-1,pod length,seeds pod-1 and seed yield plant-1. moderate (30-60%) heritability values were observed for pods raceme-1 and 1000-seed weight. the expected response to selection was higher (≥20%) for seed yield plant-1 whereas,moderate values (10-20%) for selection response were recorded for primary branches plant-1and seeds pod-1. pods raceme-1,pod length and 1000-seed weight showed lower values (≤10%) for expected response to selection. higher broad sense heritability estimates and considerable genetic advance could be a valuable tool for breeders to select improved genotypes of brassica napus for higher seed yield. the genotypes j-35,j-38 and j-40 presented better results for studied traits and hence could be used in future breeding schemes.