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园艺学报 ›› 2008, Vol. 35 ›› Issue (5): 761-764.

• 研究简报 • 上一篇    下一篇

高温和干旱胁迫对尾巨桉幼苗生理特性的影响

刘奕清1,2,3*;陈泽雄1,2,3;杨婉晴1   

  1. 1重庆文理学院生命科学系,重庆永川402160;2重庆文理学院花卉研究所,重庆永川402160;3重庆高校园林花卉工程研究中心,重庆永川402160)
  • 收稿日期:2008-02-01 修回日期:2008-04-06 出版日期:2008-05-25 发布日期:2008-05-25
  • 通讯作者: 刘奕清

Effect of High Temperature and Drought Stress on the Physiological Characteristics of Eucalyptus urophylla×E. grandis Seedling

LIU Yi-qing1,2,3*,CHEN Ze-xiong1,2,3,and YANG Wan-qing1   

  1. (1Department of Life Science, Chongqing University of Arts and Sciences, Yongchuan Chongqing 402160,China; 2Flower Research Institute, Chongqing University of Arts and Sciences, Yongchuan Chongqing 402160,China; 3Garden and Flower Engineering Research Center of Chongqing Colleges, Yongchuan Chongqing 402160,China)
  • Received:2008-02-01 Revised:2008-04-06 Online:2008-05-25 Published:2008-05-25
  • Contact: LIU Yi-qing1

摘要:

以木本植物尾巨桉无性系幼苗为试验材料,研究高温(40℃)和干旱胁迫(停止浇水)对其生理特性的影响。结果表明:随着高温和干旱胁迫处理时间的延长,幼苗受害指数、膜透性、丙二醛含量和脯氨酸含量均有不同程度的增高;叶片含水量、叶绿素含量均明显降低,干旱胁迫的影响大于高温胁迫的影响。

关键词: 尾巨桉, 高温, 干旱胁迫, 生理特性

Abstract:

Eucalyptus urophylla × E. grandis seedlings were used to study the physiological effects of high temperature and drought stress on leaves. The results showed that with the extension of high temperature (40oC) and drought stress (water withholding) the injury index, membrane leakage and MDA content and proline concentration in the leaves of the eucalyptus seedlings increased to different degrees. Leaf water content, chlorophyll and carotenoid concentrations were significantly reduced. The variations of the above parameters under drought stress were greater than under high temperature.

Key words: Eucalyptus urophylla × E. grandis, High temperature, Drought stress, Physiological characteristics

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