In order to determine stable rice genotypes (Oryza Sativa L.) with high grain yield through a single parameter, field experiment was conducted using fifteen rice genotypes in two different conditions (irrigated and rainfed) in a complete randomized block design with three replications across four locations within two rice producing hubs in Northern Ghana; the Savelugu hub in the Northern Region and the Navrongo hub in the Upper East Region. Combined analysis of variance showed significant differences for the interaction between the genotypes and the environments, indicating the possibility of selecting stable genotypes. The results of the additive main effects and multiplicative interaction analysis revealed that 12.31% of variability was justified by the interaction between the genotype and the environment. The scores of the principal interaction components showed high variability for the environments relative to the variety effects. The study identified genotypes Perfume (short), Basmati 370-1, genotypes GH1837, Good and new (JP) and genotype Perfume (short) as stable entries. The genotypes Perfume (short), GH1837, Basmati 370-1, and Good and new(JP) were observed to be stable with high grain yield across both rainfed and irrigated conditions.

Keywords

Genotype, Rank Sum, Rice (Oryza sativa L.), Yield Stability Index