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应用生态学报 ›› 1998, Vol. 9 ›› Issue (3): 265-268.

• 研究论文 • 上一篇    下一篇

羊草无性系构件在不同环境下的可塑性变化

杨持, 杨理   

  1. 内蒙古大学生态与环境科学系, 呼和浩特010021
  • 收稿日期:1996-12-02 修回日期:1997-06-26 出版日期:1998-05-25 发布日期:1998-05-25
  • 基金资助:

    国家自然科学基金重点资助项目(39330050)

Plasticity of clonal modules of Leymus chinensis in response to different environments

Yang Chi, Yang Li   

  1. Department of Ecology and Environmental Science, Inner Mongolia University, Huhhot 010021
  • Received:1996-12-02 Revised:1997-06-26 Online:1998-05-25 Published:1998-05-25

摘要: 对温室内栽培羊草,人为控制温度及光照强度的条件,观测无性系构件的生长与分化的结果表明,羊草的无性系构件生长存在明显的可塑性变化,长时间的低温显着抑制羊草根茎和无性小株的分化(P<0.05), 而对分蘖无明显抑制作用。遮荫显着抑制根茎和无性小株的分化(P<0.05), 但对分蘖的影响并不显着。羊草的这种生态适应特征有利于对环境变化的适应。

关键词: 羊草, 无性系构件, 可塑性, 温度, 光照强度, 昆虫群落多样性, 近自然森林经营, 樟子松, 林分类型

Abstract: Observations on the growth and differentiation of Leymus chinensis growing in greenhouse under controlled temperature and light intensity show that there was a significant plasticity for the growth of clonal modules. Lower temperature in a long period shading significantly inhibited the differentiation of rhizome and ramet modules (P<0.05), but did not affect tillering. Such an ecological adaptation would benefit Leymus chinensis to adapt to environmental changes.

Key words: Leymus chinensis, Clonal module, Plasticity, Temperature, Light intensity, Pinus sylvestris varmongolica, close-to-nature forest management, forest stand type, insect community diversity