| Physiological and ecological response of different drought\|tolerant adzuki beans root system to drought\|rehydration |
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| DOI：10.7606/j.issn.1000-7601.2023.01.12 |
| Key Words: adzuki bean root system drought rewatering physiological and ecological response |
| Author Name | Affiliation | | SHAN Hao | Institute of Wheat Research，Shanxi Agricultural University, Linfen, Shanxi 041000, China | | LUO Haijian | School of Life Science, Shanxi Normal University, Taiyuan, Shanxi 030000, China | | ZHANG Song | Institute of Wheat Research，Shanxi Agricultural University, Linfen, Shanxi 041000, China | | ZHANG Jiugang | Institute of Wheat Research，Shanxi Agricultural University, Linfen, Shanxi 041000, China | | ZHANG Hu | Institute of Wheat Research，Shanxi Agricultural University, Linfen, Shanxi 041000, China | | CUI Aimin | Institute of Wheat Research，Shanxi Agricultural University, Linfen, Shanxi 041000, China | | XUE Chao | Institute of Wheat Research，Shanxi Agricultural University, Linfen, Shanxi 041000, China | | ZHANG Yongqing | School of Life Science, Shanxi Normal University, Taiyuan, Shanxi 030000, China |
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| Abstract: |
| This study used Jingnong 2, Zunhuahong and B1783 as experimental materials to explore the physiological and ecological responses of the roots of adzuki bean varieties with different drought resistance to drought and rehydration and examine the effects of drought stress and rehydration on root morphology, root system vitality, root antioxidant enzyme activity, malondialdehyde (MDA), soluble sugar, soluble protein and proline content in roots. The test results showed that drought stress caused different degrees of damage to the root system of adzuki bean, resulting in a significant decrease in the dry weight of adzuki bean root, main root length, root activity, and root soluble protein content. Among the three cultivars, Jingnong 2 had the smallest decrease, and the decrease of SS under severe drought stress was 8.82%, 12.15%, 18.83% and 15.80%, respectively. After rehydration, there were different degrees of recovery, but it was still lower than the control value. The activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) in roots increased, and Jingnong 2 had the largest increase, and the increases under SS treatment were 15.02%, 86.76%, and 37.70%, respectively. The contents of MDA, soluble sugar and proline in roots increased with the deepening of drought stress, and the stronger the drought resistance of the varieties, the greater the increase. It recovered after rehydration but did not reach the control level. It indicated that the recovery ability of different drought\|resistant adzuki beans after drought\|rewatering was quite different, and the overall performance was that the more drought\|resistant adzuki bean varieties, the stronger the recoverability after drought\|rewatering. |
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