GENETIC VARIABILITYAND CORRELATION STUDIES FOR MORPHOPHYSIOLOGICAL TRAITS IN BRASSICA NAPUS L.

Abstract

Genetic variability, heritability, genetic advance and correlation were determined in ten Brassica napus L. genotypes for morpho-physiological traits at The University of Agriculture, Peshawar, Pakistan. Significant differences among genotypes for most of the characters indicated presence of sufficient genetic variability for effective selection. High heritability and high genetic advance were observed for flowering initiation, 50% flowering and flowering completion, plant height, seeds pod-1 and 100-seed weight. Significant positive correlations were observed for plant height with main raceme length (r=0.48**), pods main raceme-1 (r=0.67**) and 100-seed weight (r=0.47**). Seeds pod-1 was positively correlated with pod length (r=0.51**) and pod width (r=0.46**). Similar associations were observed for pod length with pod width (r=0.44*) and 100-seed weight (r=0.59**). Plant height, seeds pod-1, pod length and 100-seed weight can be used as selection criteria.