Performance Evaluation and Stability Analysis of Faba Bean (Vicia faba L.) Varieties in Siltie and Guraghe Zones, Ethiopia

Mukerem E. S.; Shimelis M. A.; Muhamed S. E.

Abstract

The experiment was conducted with ten faba bean Varieties for two consecutive years (2015–2016) comprising six environments in order to determine the effect of genotype x environment interaction and to identify and select high yielding, stable and best performing faba bean varieties with better adaptability. The experiment was laid out in a randomized complete block design with three replications. The combined analysis of variance of grain yield showed a highly significant differences (P<0.001) for environments, genotypes and genotype by environment interactions. Mean yield performance across varieties ranged from 1899.83 kg/ha (Walki) to 2797.79 kg/ha (TUMSA) varieties. The lowest and highest mean yield measured at Mirab azernet-2015 (2204.38 kg/ha) and Alicho wuriro-2016 (2556.03 kg/ha), respectively. Additive main effect and multiplicative interaction (AMMI) analysis revealed that the genotype by environments partitioned in two significant PCAs at P ≤ 0.001 for PCA1 and at P ≤ 0.05 for PCA2 cumulatively contributing for 92.8% interaction values indicating that most the information could be generated from the two axes. AMMI stability value, yield stability index and GGE biplot analysis identified that TUMSA, and Moti varieties are high yielder and stable varieties across the tested environment and Gabelcho specifically best performed at Gumer-2015 and Gumer-2016 locations Therefore, TUMSA and Moti varieties were recommended for all tested environments and similar agro-ecology areas. In addition to Gebelcho variety also recommended for Gumer location.

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