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中国沙漠 ›› 2015, Vol. 35 ›› Issue (3): 645-651.DOI: 10.7522/j.issn.1000-694X.2014.00055

• 生物与土壤 • 上一篇    下一篇

黑沙蒿(Artemisia ordosica)对羊柴(Hedysarum laeve)及柠条(Caragana intermedia)的化感作用

高姗1,2,3, 廖超英1,2,3, 刘瑞顺1,2,3, 高智辉1,2,3, 多杰吉1,2,3, 徐松1,2,3   

  1. 1. 西北农林科技大学 西北农林科技大学 资源环境学院, 陕西 杨凌 712100;
    2. 西北农林科技大学 农业部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100;
    3. 西北农林科技大学 林学院, 陕西 杨凌 712100
  • 收稿日期:2014-01-08 修回日期:2014-04-22 出版日期:2015-05-20 发布日期:2015-05-20
  • 通讯作者: 廖超英(Email:chaoying95@163.com)
  • 作者简介:高姗(1989-),女,天津人,硕士研究生,主要从事水土保持与荒漠化防治研究。Email:gsapril@163.com
  • 基金资助:

    国家自然科学基金项目(30670339)

Allelopathic Effects of Artemisia ordosica on Hedysarum laeve and Caragana intermedia

Gao Shan1,2,3, Liao Chaoying1,2,3, Liu Ruishun1,2,3, Gao Zhihui1,2,3, Duojieji1,2,3, Xu Song1,2,3   

  1. 1. College of Resources and Environment Science, Yangling 712100, Shaanxi, China;
    2. Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China;
    3. College of Forestry, Northwest A & F University, Yangling 712100, Shaanxi, China
  • Received:2014-01-08 Revised:2014-04-22 Online:2015-05-20 Published:2015-05-20

摘要:

采用生物测定方法,研究了黑沙蒿(Artemisia ordosica)叶水浸液对生态相关种羊柴(Hedysarum laeve)与柠条(Caragana intermedia)种子萌发与幼苗生长的化感作用。结果表明:黑沙蒿叶水浸液可抑制羊柴种子萌发与幼苗生长,抑制作用随浓度的升高逐渐加强;幼苗形态指标对叶水浸液作用较为敏感,敏感程度为苗干重>苗鲜重>根鲜重>根长>苗高>根干重;丙二醛含量综合化感效应指数值明显大于其他指标,相对电导率也表现出较敏感的抑制效应。黑沙蒿叶水浸液对柠条种子萌发存在低促高抑作用;对幼苗形态指标综合化感效应表现为促进,促进作用随浓度的升高逐渐减弱,根鲜重、根长与苗干重为较敏感指标;对生理指标化感综合效应表现为抑制,抑制作用随浓度升高而增强,相对电导率是最敏感的指标,丙二醛含量指标也较敏感。由此推断,对膜系统的伤害可能是黑沙蒿化感物质多种效应的生物起点。

关键词: 黑沙蒿(Artemisia ordosica), 羊柴(Hedysarum laeve), 柠条(Caragana intermedia), 化感作用

Abstract:

Bioassay methods were used to study the allelopathic effects of Artemisia ordosica leaf aqueous extract on eco-related species Hedysarum laeve and Caragana intermedia seed germination and seedling growth. The results showed that A. ordosica leaf aqueous extract caused inhibition on H. laeve seed germination and seedling growth, the inhibitory effects were increasing along with the concentration of the leaf aqueous extracts. The indexes of seedling morphology were sensitive to leaf aqueous extract, seedling dry weight, seedling fresh weight, root fresh weight, root length, seedling height, root dry weight were listed in terms of their sensitivity. The synthetic effect index of MDA content was significantly greater than other physiological indicators, relative conductivity rate also had a relatively strong inhibitory effect. A. ordosica leaf aqueous extract showed the "Hormesis effect" on C. intermedia seed germination. The leaf aqueous extract accelerated the seedling growth, but with its concentration raised, the positive effect gradually decreased. root fresh weight, root length and seedling dry weight were sensitive indexes. The leaf aqueous extract could inhibit the seedling physiological characteristics in concentration-dependent manner, relative conductivity rate and MDA content were relatively sensitive indexes.

Key words: Artemisia ordosica, Hedysarum laeve, Caragana intermedia, allelopathy

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