| 干旱胁迫对大叶冬青叶片生理特性的影响 |
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| 引用本文： | 夏鹏云,吴军,乔俊鹏,苏金乐.干旱胁迫对大叶冬青叶片生理特性的影响[J].河南农业大学学报,2010,44(1). |
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| 作者姓名： | 夏鹏云 吴军 乔俊鹏 苏金乐 |
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| 作者单位： | 河南农业大学,河南郑州,450002 |
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| 基金项目： | 河南省重点科技攻关计划项目 |
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| 摘 要： | 用PEG-6000模拟土壤干旱胁迫,对2年生大叶冬青叶片生理生化等指标进行研究.结果表明,随着胁迫程度的加强和时间的延长,叶片中叶绿素含量变化并不呈现单一的上升和下降;叶片中丙二醛的含量增幅较缓;保护酶的活性明显增强,SOD活性表现为先升后降;POD活性的变化呈现先升后降再升再降;CAT活性呈现先升后降再升的趋势.这3种保护酶协同作用,有效清除自由基,减轻干旱胁迫对细胞膜的伤害,增加了大叶冬青的抗旱性,试验说明了大叶冬青有较强的抗旱能力.
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| 关 键 词： | 大叶冬青 抗旱 生理特性 |
Physiological responses of broadleaf holly leaves under drought stress |
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| XIA Peng-yun,WU Jun,QIAO Jun-peng,SU Jin-le.Physiological responses of broadleaf holly leaves under drought stress[J].Journal of Henan Agricultural University,2010,44(1). |
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| Authors: | XIA Peng-yun WU Jun QIAO Jun-peng SU Jin-le |
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| Institution: | Henan Agricultural University/a>;Zhengzhou 450002/a>;China |
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| Abstract: | Simulating soil water stress with PEG-6000,this paper studied the drought resistance indices of broadleaf holly,such as physiological and biochemical characteristics.The results showed: as drought stress intensified and time prolonged,the change of chlorophyll content in the leaves did not show a single tendency;MDA content increaseed slowly;the activity of protective enzyme increased significantly;the activity of SOD first increased and then decreased;the activity of POD showed a repeated rising and fallin... |
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| Keywords: | PEG-6000 broadleaf holly PEG-6000 drought resistance physiological characteristic |
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