Genotype x Environment interaction and stability analysis for grain yield and its components in Halugidda local rice mutants
2010
B.M.Dushyantha Kumar , Y.G.Shadakshari and S L Krishnamurthy
The genotype (G) x environment (E) interaction and stability for grain yield and some associated traits was studied during theyear 2002-2006 in eight Halugidda local rice mutants in the hill zone of Karnataka. Significant G x E interaction was observedfor all the traits studied. The pooled deviation was significant for the majority of the traits including grain yield andconsiderable genotypic difference was observed. Both the linear and non-liner components of G x E interaction weresignificant, but the linear component was more predominant. Based on the stability parameters, rice mutants HSM-23 andHSM-27 showed higher grain yield over the population mean, with regression coefficient near unity and zero deviation fromregression. Thus, they were found to be stable and may be recommended for the commercial cultivation in this region/ zone ofKarnataka.
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