Abstract: Aiming to explore the response characteristics of Allium tuberosum(wild chives) to drought environment, taking Qinling wild chives as the experimental material, the study investigated the effects of drought stress and rehydration on its relative chlorophyll content and nitrogen content. The results showed that, with the extension of soil drought stress time, both the relative chlorophyll content and nitrogen content of wild chives showed a decreasing trend, while the water stress index showed an increasing trend. After 21 days of drought treatment, compared with the control group, the wild chives experienced the maximum decrease in relative chlorophyll content and nitrogen content, which decreased by 39.47% and 30.99%, respectively. After rehydration treatment, the relative chlorophyll content and nitrogen content of wild chives gradually recovered. With the extension of rehydration time after drought stress, the recovery of relative chlorophyll content and nitrogen content in wild chives was different. After 14 days of rehydration, the relative chlorophyll content of Qinling wild chives returned to the control level, and after five days of rehydration, the nitrogen content of Qinling wild chives returned to the control level. Rehydration stimulated the physiological compensation effect of wild chives.

Key words: Allium tuberosum/, drought stress, rewatering, compensation effect