| Effect of PEG stress on seed germination and seeding physiology of three Legumes |
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| DOI：10.7606/j.issn.1000-7601.2012.05.19 |
| Key Words: Legume PEG stress seed germination physiological indexe |
| Author Name | Affiliation | | YU Rugang | College of Life Science and Anhui Key Laboratory of Plant Resources and Biology, Huaibei Normal University, Huaibei, Anhui 235000, China | | DU Xueling | College of Life Science and Anhui Key Laboratory of Plant Resources and Biology, Huaibei Normal University, Huaibei, Anhui 235000, China | | CHEN Chu | College of Life Science and Anhui Key Laboratory of Plant Resources and Biology, Huaibei Normal University, Huaibei, Anhui 235000, China | | ZHOU Xiujie | College of Life Science and Anhui Key Laboratory of Plant Resources and Biology, Huaibei Normal University, Huaibei, Anhui 235000, China | | SHI Gangrong | College of Life Science and Anhui Key Laboratory of Plant Resources and Biology, Huaibei Normal University, Huaibei, Anhui 235000, China |
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| Abstract: |
| The seed germination and seeding physiology of three legumes (white clover, sainfoin, lucerne) were researched under artificial drought stress using different concentrations of polyethylene glycol (PEG-6000). T
he results showed that the germination rate (GR), germination index(GI) and relative water concent (RWC) of three legumes decreased with the increase of the drought stress，but the germination potential (GP) of seeds of white clover had a inflection point at 10% PEG. With different PEG concentrations, GR of white clover was the highest and GR of lucerne was lower. The RWC of sainfoin was higher than others legumes. SOD activity of white clover and sainfoin first increased and then decreased as drought stress increased, but the lucerne had an opposite change. POD activity of white clover and sainfoin presented a “Z” tendency. CAT and root activity of three legumes increased and then decreased, and the root vigor of sainfoin was higer than the other two legumes. |
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