Stability of rice yield under different lowland situations

Phenotypic stability was studied in 47 rice genotypes under four different lowland situations for grainyield and its two important components, panicle weight and earbearing tillers (EST) perhill. Significant genotype (G) x environment (E) interactions were observed for all the traits. Among the linear and nonlinear components of G x Einteraction, linear component was predominant for EBT/hill and nonlinear component for grain yield, while both are equally important for panicle weight. On the basis of stability parameters, the genotypes CR 728-7-2-2, CR 673–431 and Utkal Prava were identified as best cultures for both intermediate and semi-deep low land situations under direct seeded as well as transplanted conditions.