| 等渗胁迫下NaCl和PEG对小麦幼苗伤害的比较 |
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| 引用本文： | 时丽冉,白丽荣,李会芬.等渗胁迫下NaCl和PEG对小麦幼苗伤害的比较[J].衡水学院学报,2006,8(1):66-68. |
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| 作者姓名： | 时丽冉 白丽荣 李会芬 |
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| 作者单位： | 衡水学院,生命科学系,河北,衡水,053000 |
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| 基金项目： | 河北省科技攻关指导性项目 |
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| 摘 要： | 用等渗的NaC l和PEG处理三叶期小麦幼苗,3d后测定各项生理指标.结果表明,两种处理均引起幼苗叶片相对含水量、叶绿素含量降低,质膜透性增大,丙二醛含量上升,脯氨酸含量大幅度上升,叶片渗透势降低.NaC l处理使叶片可溶性蛋白含量降低,而等渗的PEG处理却引起可溶性蛋白含量上升.相比较而言,在等渗胁迫下,NaC l引起的伤害大于PEG引起的伤害,说明盐胁迫除了引起渗透胁迫外,离子胁迫也起到了重要作用.
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| 关 键 词： | 等渗胁迫 小麦 丙二醛 脯氨酸 可溶性蛋白 渗透势 |
| 文章编号： | 1673-2065(2006)01-0066-03 |
| 收稿时间： | 10 11 2005 12:00AM |
| 修稿时间： | 2005年10月11 |
Comparison Between Injury of ISO-OSMOTIC NaCL And PEG Stress ON Wheat Seedlings |
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| SHI Li-ran,BAI Li-rong,LI Hui-fen.Comparison Between Injury of ISO-OSMOTIC NaCL And PEG Stress ON Wheat Seedlings[J].Journal of Hengshui University,2006,8(1):66-68. |
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| Authors: | SHI Li-ran BAI Li-rong LI Hui-fen |
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| Institution: | Department of Life Science, Hengshui University, Hengshui, Hebei 053000, China |
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| Abstract: | The wheat seedlings were treated with iso-osmotic NaCl and PEG at three leaf stage and some physiological indexes were determined after three days.The results showed that the water relative content and chlorophyll content of leaves decreased,the membrance relative permeability and MDA content increased,the prolinel content increased and the osmotic potential decreased highly.The soluble content of wheat decreased under the NaCl stress but increased under the iso-osmotic PEG stress.Comparing the injury between the iso-osmotic NaCl and PEG stress,it was greater under NaCl stess than PEG stress.It shows that the ionic stress is as important as the osmotic stress in the salt stress. |
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| Keywords: | iso-osmotic stress wheat MDA prolinel soluble protein osmotic potential |
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