华北农学报 ›› 2008, Vol. 23 ›› Issue (3): 81-84. doi: 10.7668/hbnxb.2008.03.021

所属专题: 抗旱节水

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干旱胁迫下紫花苜蓿叶片几种内源激素的变化

韩瑞宏1, 张亚光2, 田华3, 卢欣石4   

  1. 1. 华南农业大学, 生命科学学院, 广东, 广州, 510642;
    2. 赤峰市红山区园林管理处, 内蒙古, 赤峰, 024000;
    3. 华南农业大学, 农学院, 广东, 广州, 510642;
    4. 北京林业大学, 资源与环境学院, 北京, 100083
  • 收稿日期:2008-02-18 出版日期:2008-06-28
  • 通讯作者: 卢欣石(1947-)男、博士、教授、博士生导师、主要从事草地遗传资源与生态方面研究。
  • 作者简介:韩瑞宏(1974-),女,内蒙古牙克石人,博士,主要从事牧草抗逆性研究工作.
  • 基金资助:
    教育部博士点基金项目(20060022011);国家“十一五”科技支撑计划课题(2006BAD01A19)

Study on Changes of Endogenous Hormones in the Leaves of Alfalfa under Drought Stress

HAN Rui-hong1, ZHANG Ya-guang2, TIAN Hua3, LU Xin-shi4   

  1. 1. College of Life Science, South China Agricultural University, Guangzhou 510642, China;
    2. Gardens Administration Bureau of Hongshan District, Chifeng City, Chifeng 024000, China;
    3. College of Agronomy, South China Agriculture University, Guangzhou 510642, China;
    4. Institute of Resources and Environment, Beijing Forestry University, Beijing 100083, China
  • Received:2008-02-18 Published:2008-06-28

摘要: 以陇东(耐旱)、BL-02-329(不耐旱)2种抗旱性强弱差异较大的紫花苜蓿为试验材料,对干旱胁迫下2种紫花苜蓿叶片中ABA,IAA,GA3,ZR 4种内源激素的含量变化进行研究,结果表明:在干旱胁迫下,陇东、BL-02-329两种紫花苜蓿叶片ABA,IAA含量均有不同程度的上升,GA3和ZR的含量均呈下降趋势。干旱胁迫下4种内源激素之间的协调总趋势是向着气孔关闭、促进根系发展的方向进行。重度干旱时,苜蓿叶片中4种内源激素之间的协调趋势反映出抗旱性强的陇东苜蓿通过减缓生长速率来保证生存方面的调节能力较强,能有效地避免缺水伤害。

关键词: 干旱胁迫, 紫花苜蓿, 叶片, 内源激素, 变化

Abstract: In this study,Longdong(strong drought-resistance)and BL-02-329(weak drought-resistance)were chosen as experimental material to study the change of four endogenous hormones in the leaves of alfalfa under drought stress.The results of study on endogenous hormones content in alfalfa leaves showed:under drought stress the content of ABA and IAA in the leaves of alfalfa increased and the content of GA3 and ZR decreased at different extent.The general trend of coordination among four endogenous hormoneswas closing the stoma and promoting the growth of root.Under severe drought stress,the trend of coordination among four endogenous hormones in the leaves of alfalfa indicated Longdong(strong drought-resistance alfalfa)had higher coordination ability in reducing growth rate to ensure surviving to avoid the damage of lack of water effectively.

Key words: Drought resistance, Atfalfa, Leaves, Endogemus harmones, Changes

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引用本文

韩瑞宏, 张亚光, 田华, 卢欣石. 干旱胁迫下紫花苜蓿叶片几种内源激素的变化[J]. 华北农学报, 2008, 23(3): 81-84. doi: 10.7668/hbnxb.2008.03.021.

HAN Rui-hong, ZHANG Ya-guang, TIAN Hua, LU Xin-shi. Study on Changes of Endogenous Hormones in the Leaves of Alfalfa under Drought Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(3): 81-84. doi: 10.7668/hbnxb.2008.03.021.

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