Evaluation of Durum Wheat Genotypes for Grain Yield in Southern Tigray, Ethiopia

Abstract

An experiment was conducted with the objective of assessing the seasonal adaptation and grain yield stability of durum wheat genotype in ofla district. In this trial, twelve durum wheat genotypes were evaluated in three consecutive cropping seasons during 2011-2013.The trial was laid out in randomized complete block design (RCBD) with two replication . The analysis of variance (ANOVA) revealed that there was significant difference (P< 0.05) for genotype and genotype by season interaction. The genotypes captured (34.5%) sum of square implying the presence large differentia in the durum wheat genotypes. Using the additive main effect and multiplicative interaction biplot analysis and additive main effect and multiplicative interaction stability value, the genotypes Yerer and Kokate were with higher grain yield and stable in performance across seasons. The genotypes Tate and Local were unstable genotypes contributing more to the increased magnitude genotype by season interaction.

Keywords: AMMI, ASV, Durum Wheat, Season