Stability analysis for yield and its contributing traits in Brown sarson (Brassica rapa L.) under Kashmir conditions in India

Abstract

Twelve elite genotypes of Brown sarson (Brassica rapa L.) including two checks viz., KS-101 and SBS-1
were evaluated during rabi 2011-12 across three random environments for stability performance in yield,
yield contributing characters and oil content as per Eberhart and Russell model. Analysis of variance
revealed that the genotypes exhibited highly significant genetic variability for all the traits viz., primary branches
plant-1, length of main raceme (cm), number of siliquae on main raceme, number of siliquae plant-1, number of
seeds siliqua-1, 1000-seed weight (g), seed yield plant-1 (g) and oil content (%). The mean squares due to
environments were also significant for all the traits indicating the environments selected were random and
were different in agro-climatic conditions. G x E interactions were observed to be significant for all the traits.
Based on the stability parameter of Eberhart and Russel model, SKBR-11 was considered as stable and
average responsive to the environments for yield and most of the component traits.