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植物研究 ›› 2005, Vol. 25 ›› Issue (1): 39-44.doi: 10.7525/j.issn.1673-5102.2005.01.015

• 论文 • 上一篇    下一篇

干旱对浑善达克沙地榆叶片解剖结构的影响

张红霞, 刘果厚, 崔秀萍   

  1. 内蒙古农业大学生态环境学院, 呼和浩特 010019
  • 收稿日期:2004-01-02 出版日期:2005-03-15 发布日期:2016-06-14
  • 作者简介:张红霞(1978-), 女, 汉, 硕士研究生, 从事沙区植物资源开发与利用的研究工作。
  • 基金资助:
    中国科学院知识创新工程项目(KSCX1-08)

Affection of aridity to anatomical structure of leave of Ulmus pumila L. var. sabulosa

ZHANG Hong-Xia, LIU Guo-Hou, CUI Xiu-Ping   

  1. College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Huhhot 010019
  • Received:2004-01-02 Online:2005-03-15 Published:2016-06-14

摘要: 采用石蜡切片法对浑善达克沙地流动沙丘顶部、丘间草地处的浑善达克沙地榆及呼和浩特市白榆叶的解剖结构进行了对比观察和分析,以期探讨浑善达克沙地榆在解剖学方面适应干旱的机理。结果表明,虽然属同种植物,但由于环境条件的不同,叶片的解剖结构表现出明显的差异。生境条件最差的流动沙丘顶部的浑善达克沙地榆的抗旱性最强,具体表现为:叶片厚,表皮细胞大,具有较厚的表皮细胞外壁与角质层;栅栏组织发达,细胞缩小,排列紧密。

关键词: 浑善达克沙地榆, 叶片, 解剖结构, 抗旱性

Abstract: In order to discuss the drought-resistant mechanism of Ulmus pumila L. var. sabulosa in anatomy, the comparative observation and analysis of anatomical structure of leaves of Ulmus pumila L. var. sabulosa from the top of drifting sandy dune and inter-dunes grassland in Otindag Sandy Land, Ulmus pumila from Huhhot were demonstrated by using the method of slices of paraffin wax in this paper. The results showed that the anatomical structure of the leave showed notable differences owing to different environmental condition in spite of belonging to the same species. The drought resistance of Ulmus pumila L. var. sabulosa from the top of drifting sandy dune whose habitat was the poorest was the strongest. Its leave was thick, and its epidermis cell was big. Its epidermis cell wall and cuticle were thick. Its palisade tissue was developed, and the cell of palisade tissue became smaller and densely arranged.

Key words: Ulmus pumila L. var. sabulosa, leave, anatomical structure, drought resistance