科尔沁沙地4种植物抗旱性的比较研究

摘要/Abstract

摘要： 对科尔沁沙地小叶锦鸡儿、紫穗槐、差巴嘎蒿和胡枝子4种植物的若干水分生理生态指标进行了测定.结果表明,小叶锦鸡儿具有低水势、高持水力和束缚水/自由水比及水分利用效率,抗旱性强;紫穗槐的各项指标与小叶锦鸡儿相反,抗旱性最差;差巴嘎蒿虽然水势较高,但它的持水力高,束缚水/自由水比和水分利用效率都较高,抗旱性也较强,但次于小叶锦鸡儿;胡枝子的水势和持水力较低,束缚水/自由水比及水分利用效率一般,它的抗旱性强于紫穗槐,但比差巴嘎蒿差.

关键词: 科尔沁沙地, 小叶锦鸡儿, 紫穗槐, 差巴嘎蒿, 胡枝子, 抗旱性, 超声波, 抗氧化酶, 种子预处理, 发芽率, 种子老化

Abstract: The water physio ecological index and photosynthetic rate of four plant species, Caragana microphylla, Amorpha fruticosa, Artemish halodendron, and Lespedeza bicolor,in kerqin sandy land were determined. The results showed that C.microphylla has the lowest leaf water potential and the highest water maintainance, bound water/free water ratio, and water utilization efficiency.Its drought resistance is the strongest. Amorpha fruticosa was contrary to Caragana microphylla,and its drought resistance was the weakest. Artemish halodendrona had a high leaf water potential, but its water maintainance,bound water/free water ratio,and water utilization efficiency were very high.Its drought resistance was stronger. Lespedeza bicolor had a lower leaf water potential and water maintainance, and a usual bound water/free water ratio,and water utilization efficiency.Its drought resistance was stronger than Amorpha fruticosa 's,but weaker than Artemish halodendron' s.

Key words: germination percentage, antioxidant enzyme., seed pre-treatment, seed ageing, ultrasound

中图分类号:

Q948.112

李雪华, 蒋德明, 阿拉木萨, 范士香, 骆永明. 科尔沁沙地4种植物抗旱性的比较研究[J]. 应用生态学报, 2002, (11): 1385-1388.

LI Xuehua, JIANG Deming, ALAMUSA, FAN Shixiang, LUO Yongming. [J]. Chinese Journal of Applied Ecology, 2002, (11): 1385-1388.

参考文献

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