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植物研究 ›› 2010, Vol. 30 ›› Issue (2): 157-163.doi: 10.7525/j.issn.1673-5102.2010.02.006

• 论文 • 上一篇    下一篇

蛇足石杉生态适应性研究Ⅰ茎叶解剖特征的比较

周毅1,2;黄衡宇1,2*;李菁1,2   

  1. 1.吉首大学植物资源保护与利用湖南省高校重点实验室,吉首 416000;2.吉首大学生态研究所,吉首 416000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-03-20 发布日期:2010-03-20
  • 通讯作者: 黄衡宇
  • 基金资助:
     

Ecological Adaptation of Huperzia serrataⅠ Leaf and Stem Anatomical Characterstics

ZHOU Yi;HUANG Heng-Yu;*;LI Jing;   

  1. 1.Key Laboratory of Plant Resources Conservation and Utilization,Jishou University,College of Hunan Province,Jishou 416000;2.Institute of Ecology,Jishou University,Jishou 416000
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-03-20 Published:2010-03-20
  • Contact: HUANG Heng-Yu
  • Supported by:
     

摘要: 利用解剖学方法对湘西地区蛇足石杉5个野生居群个体(S1,S2,S3,S4,S5)的茎叶进行了解剖学比较和分析,结果表明:不同居群蛇足石杉解剖结构的性状存在明显的差异性,其中维管柱厚度、皮层厚度、海绵组织厚度、叶片厚度这4个性状是造成居群间蛇足石杉解剖学性状差异的主要因子;茎叶解剖结构也表现出对阴湿环境适应的的形态特征,但是,S1居群的蛇足石杉具有适应旱生生境的趋势。这些解剖学性状除受遗传因子控制外,环境因子(主要为光照和水分)起着重要的作用,因此,蛇足石杉形态解剖学上的差异性或可塑性是其赖以适应环境和生存的基础。

关键词: 蛇足石杉, 湘西地区, 茎叶解剖特征, 生态适应性

Abstract: By using the method of anatomy, we compared and analyzed the anatomical characterstics of the leaf and stem of five wild populations of Huperzia serrata in Xiangxi Region. The results showed that H.serrata populations have obvious differences in anatomical characterstics. Among all anatomical characterstics, vascular cylinder thickness, cortex thickness, spongy tissue thickness, and leaf thickness are the main factors which contribute to the differences of anatomical characterstics of H.serrata populations; The anatomical characterstics of stem and leaf are morphologically adaptive to damp environment, but among all populations, H.serrata in S1 population have the tendency of adapting dry environment. These morphological characterstics are mainly controlled by genetic factors, but environmental factors(mainly light and water) also have important influence on them. Therefore, the anotomical difference and plasticity of H.serrata populations are essential for the adaptation and the existance of H.serrata.

Key words: Huperzia serrata, Xiangxi Region, anatomical characterstics of leaf and stem, ecological adaptation

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