四种沙漠植物的抗旱研究

›› 2008, Vol. 10 ›› Issue (2): 105-109.

四种沙漠植物的抗旱研究

高天明[1] 闫志坚[2] 高丽[2]

[1]水利部牧区水利科学研究所,呼和浩特010020 [2]中国农业科学院草原研究所,呼和浩特010010

收稿日期:2007-12-19 修回日期:2008-01-31 出版日期:2008-04-15 发布日期:2009-07-29
通讯作者: 闫志坚，研究员，博士，硕士生导师，主要从事恢复生态学研究。Tel：047 1-4926871；E-mail：yanzj1962@sina．com
作者简介:高天明|硕士研究生|主要从事草地生态研究。E-mail：zaohuer@yahoo．com．cn。
基金资助:
中国农业科学院草原研究所专项资金资助.

Studies on Drought Resistance of Four Plants Grown in Desert

GA0 Tian-ming, YAN Zhi-jian, GA0 Li

1. The Institute of Water Resources for Pastoral Areas, Huhhot 010020 |2. Institute of Grassland Science, Chinese Academy of Agricultural Sciences, Huhhot 010010, China

Received:2007-12-19 Revised:2008-01-31 Online:2008-04-15 Published:2009-07-29

摘要/Abstract

摘要：

通过研究库布齐沙漠东段四种植物在干旱胁迫下的生理变化，结果显示，在干旱胁迫下，3种岩黄芪均分泌可溶性糖和游离脯氨酸以降低水势，增强吸水能力，同时提高SOD活性以清除O2^-，表明三者对干旱具有主动适应性；油蒿水势呈一直下降的趋势，可溶性糖也呈一直下降的趋势，游离脯氨酸和SOD活性变化不明显，处于一种“休眠”状态。根据干旱对四种植物造成的伤害程度划分抗旱性强弱顺序为：油蒿〉细枝岩黄芪〉塔落岩黄芪〉山竹岩黄芪。

关键词: 干旱胁迫岩黄芪属油蒿

Abstract:

Physiological changes of four plants （ Hedysarum fruticosum vat. lignosum, H. scoparium, H. fruticosum, Artemisia ordosica）in the east part of Kubuqi Desert under drought stress were studied. Results showed that all three kinds of Hedysarum plants could produce soluble sugar and free proline to decrease leaf water potential for enhancing their water sucking ability, and at the same time to raise their SOD activity so as to erase O2^- This indicated that three Hedysarum plants could actively adapt to drought condition. However, the leaf water potential and soluble sugar of Artemisia ordosica have being decreasing straightly, changes of free proline and SOD activity were not obvious in A. ordosica, it is in a ＂dormancy＂ state. According to differrent injury degrees brought about by drought to these four plants, the order of their drought resistance strength are as follows ： Artemisia ordosica 〉 H. scoparium 〉 H. fruticosum var. lignosum 〉 H. fruticosum.

Key words: drought stress, Hedysarum genus, Artemisia ordosica

中图分类号:

Q945.11

高天明,闫志坚,高丽. 四种沙漠植物的抗旱研究[J]. , 2008, 10(2): 105-109.

GA0 Tian-ming, YAN Zhi-jian, GA0 Li. Studies on Drought Resistance of Four Plants Grown in Desert[J]. , 2008, 10(2): 105-109.