| 垂柳幼苗对锶胁迫的生理生化响应 |
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| 引用本文： | 刘建琴,陈珂.垂柳幼苗对锶胁迫的生理生化响应[J].安徽农业科学,2013,41(3):1399-1401. |
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| 作者姓名： | 刘建琴 陈珂 |
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| 作者单位： | 西南科技大学生命科学与工程学院,四川绵阳,621010 |
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| 基金项目： | 西南科技大学实验室开放基金(12xnkf039) |
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| 摘 要： | 目的]探讨垂柳幼苗对锶胁迫的生理生化响应。方法]在水培条件下研究了不同浓度的锶(Sr2+)胁迫对垂柳幼苗生理生化水平的影响。结果]在锶胁迫下,低浓度Sr2+对垂柳幼苗的地上生物量、叶绿素含量以及超氧化物酶(SOD)活性,表现为促进作用,而高浓度时表现为抑制作用;与对照相比,叶片中丙二醛(MDA)含量显著升高,而脯氨酸含量并没有明显的变化。结论]该研究为柳树在锶污染胁迫条件下的适应机理奠定了基础。
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| 关 键 词： | 锶胁迫 垂柳 生理生化响应 |
Physiological and Biochemical Responses of Salix babylonica Linn.to Strontium Stress |
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| Institution: | LIU Jian-qin et al(School of Life Science and Engineering,Southwest University of Science and Technology,Mianyang,Sichuan 621010) |
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| Abstract: | Abstract Objective] The study aims to discuss the physiological and biochemical responses of Salix babylonica Linn. to strontium stress. Method] A hydroponic experiment with different mass concentrations of strontium （Sr2＋）was conducted to investigate the effects of strontium stress on the physiological and biochemical characteristics of Salix babylonica Linn. Result] Under strontium stress, the aboveground bio-stress on the physiological and biochemical characteristics of Salix babylonica Linn. Result] Under strontium stress, the aboveground bio- mass, chlorophyll content and superoxide dismutase （SOD）activity of willow seedlings increased gradually at the low concentration of Sr2＋ , but the high concentration of Sr2＋ showed inhibition effects. Compared with the control, malonaldehyde （MDA）content was significantly ele- vated, and there was no significant change of proline content in the leave. Conclusion] The research could lay foundations for studying the adaptation mechanism of willow under strontium stress. |
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| Keywords: | Strontium stress Salix babylonica Linn Physiological and biochemical responses |
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