M.Sc., Agriculture and Natural Resources Research Center of Isfahan
Abstract
Introducing of new genotypes and cultivars is one of the main reasons for increasing grain yield of crop plants in recent years. This research was carried out to evaluate the yield stability of rice genotypes in Isfahan province. In current study, eleven promising rice genotypes together with Sazandegi as control cultivar were evaluated using randomized complete block design with four replications in two locations of Isfahan province (Fozveh Research Station and Shorefirozan region) during 2008 and 2009. Results of combined analysis of variance for grain yield showed that the simple effects of year and location at 5% and genotype at 1% probability levels were significant. Also, interaction effects of year×location and year×genotype were significant at 5% and year×location×genotype at 1% probability levels. Results of stability analysis of genotypes by different methods showed that the genotypes 11, 2 and 4 were stable and had better responses to experimented environmental conditions than other genotypes. The grain yield of genotypes 2 and 4 was 8061 and 7955 kg.ha-1, respectively, which was 7.1% and 5.7 % higher than the control variety, Sazandegi. Results from current research showed that the genotypes 2 and 4 with desirable stable, high grain yield and suitable grain quality and agronomic characteristics were superior genotypes under Isfahan climate conditions.
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