| 胡杨种子萌发过程中几种相关酶的活性变化 |
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| 引用本文： | 刘亚萍,计巧灵,周小云. 胡杨种子萌发过程中几种相关酶的活性变化[J]. 植物生理学通讯, 2005, 41(5): 607-609 |
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| 作者姓名： | 刘亚萍 计巧灵 周小云 |
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| 作者单位： | 新疆大学生命科学与技术学院,乌鲁木齐,830046 |
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| 摘 要： | 在室温条件下,胡杨种子保留冠毛贮藏可适当延长其生命力;室温贮藏带冠毛的胡杨种子,前20 d萌发率降低幅度不大.随着种子贮藏时间的延长,过氧化物酶(POD)、过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性均先上升后下降,峰值出现时间与种子室温贮藏20 d相对应;脱氢酶活性先上升后下降再回升,峰值出现时间也与种子室温贮藏20 d相对应;酸性磷酸酯酶(ACP)活性与种子萌发率同步下降.室温贮藏40 d的带冠毛胡杨种子仍有22.3%的萌发率.
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| 关 键 词： | 胡杨 种子萌发率 保护酶 脱氢酶 酸性磷酸酯酶 |
| 收稿时间： | 2004-12-27 |
| 修稿时间： | 2005-06-28 |
Changes in Relative Enzyme Activities During Germination of Populus euphratica Oliv. Seeds |
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| LIU Ya-Ping,JI Qiao-Ling,ZHOU Xiao-Yun. Changes in Relative Enzyme Activities During Germination of Populus euphratica Oliv. Seeds[J]. Plant Physiology Communications, 2005, 41(5): 607-609 |
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| Authors: | LIU Ya-Ping JI Qiao-Ling ZHOU Xiao-Yun |
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| Affiliation: | College of Life Sciences and Technology, Xinfiang University, Urumqi 830046, China |
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| Abstract: | Populus euphratica Oliv. seeds with pappus were beneficial to prolong its vigor under room temperature. Germination percentage of seeds with pappus was not evidently decreased after storage for 20 d. The activities of peroxidase (POD), catalase (CAT) and superoxide dismutase (SOD) were increased during the early periods of storage, then decreased. The dehydrogenase activity was first increased followed by decrease, then slight increase. Acid phosphoesterase activity was decreased with decreasing of seed germination percentage. After 40 days, germination percentage of the seeds with pappus still remained 23.3% under room temperature. |
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| Keywords: | Populus euphratica Oliv. germination percentage of seeds protective enzymes dehydrogenase acid phosphoesterase |
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