AMMI Analysis for Grain Yield Stability in Lentil Genotypes Tested in the Highlands of Bale, Southeastern Ethiopia

Abstract

Lentil (Lens culinaris Medik.) as grain legumes it ranks seventh and it is a valuable source of dietary protein. Genotype x environment interaction is the main determinant in identifying genotypes with wider adaptation. A total of seventeen lentil genotypes was used in this study, where the evaluation was made at Sinana and Agarfa for three years 2016-2018. In this study it was revealed that significant variation among the genotypes, locations and genotypes by location interaction for mean grain yield was observed It is also observed in the AMMI analysis significant variation in the first two IPCA components. Accordingly, G1, G6, G13, G14, G16 and G17 gave grain yield above the grand mean. Furthermore, from the stability indicators like AMMI Stability Value: G4, G15 G8, G6, G10, had lower ASV value and showed stabile performance while G7, G11 and G1 had relatively lower ASV and showed moderately stable performance over the testing environments indicating wide adaptation. Furthermore, based on the Genotypes Selection Index (GSI) the most stable genotypes with a high grain yield were G1 and G15. Therefore, we have identified that these two genotypes as candidate genotypes to be verified for possible release in the highlands of bale, Sothern Ethiopia and similar agro-ecologies.