The researchers studied Ethiopian and Chinese wheat varieties to find ones that can survive drought. They tested the plants under normal conditions and with drought stress. Drought caused a decrease in many plant traits, but some traits like root to shoot length ratio and proline content increased. Photosynthetic pigments were positively related in both conditions. Proline was negatively related to most traits, except for root to shoot length ratio and photosynthetic pigments. Some wheat varieties showed high drought tolerance, while others were sensitive. The study found a wide range of genetic variation in the plants. The best drought-tolerant varieties were G12, G16, and G25, while the most sensitive were G6, G42, G4, G11, and G9. These findings suggest that further research is needed to identify genes related to stress response in these wheat varieties.