Drought is a major factor threatening crop production worldwide. Developing wheat varieties that are adapted to drought prone environments is a sustainable strategy to improve wheat production and productivity. The aim of this study was to evaluate and select bread wheat genotypes for yield and yield components, and for stability under drought stress and non-stress conditions. One hundred and twenty genotypes were evaluated at five test sites in the 2018/19 cropping season using a 10 x 12 alpha lattice design with two replicates. The level of drought stress was imposed using different sowing dates (early planting representing non-stressed, while late planting as drought stressed conditions) following the onset of the main rain at each site. Grain yield and yield components were recorded, and drought indices were calculated for each genotype. Among the drought tolerance indices, GMP, MP, HM, STI and YI were found to be the most suitable for predicting drought tolerance because they had significant and positive correlations with yield under drought stress and non-stress conditions. Rank sum analysis identified the most drought tolerant genotypes as ‘YS-34', ‘YS-85' and ‘YS-82’. The selected wheat genotypes are useful genetic resources for future drought tolerance breeding programmes in Ethiopia or similar agro-ecologies.

干旱是威胁全球农作物生产的主要因素。开发适应干旱环境的小麦品种是提高小麦产量和生产力的可持续战略。这项研究的目的是评估和选择面包小麦基因型的产量和产量组成，以及在干旱胁迫和非胁迫条件下的稳定性。在2018/19种植季节的五个测试点对120个基因型进行了评估，使用10 x 12 alpha格子设计并进行了两次重复。在每个站点的主要降雨开始后，使用不同的播种日期（早播表示无压力，晚播表示干旱）来施加干旱水平。记录谷物产量和产量成分，并计算每种基因型的干旱指数。在耐旱指数中，发现GMP，MP，HM，STI和YI最适合预测耐旱性，因为它们与干旱胁迫和非胁迫条件下的产量具有显着正相关。秩和分析确定了最耐旱的基因型为“ YS-34”，“ YS-85”和“ YS-82”。选定的小麦基因型是埃塞俄比亚或类似农业生态系统未来抗旱育种计划的有用遗传资源。