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植物研究 ›› 1997, Vol. 17 ›› Issue (1): 65-71.

• 论文 • 上一篇    下一篇

锦鸡儿属植物幼茎及叶的解剖结构及其生态适应性

常朝阳1, 张明理2   

  1. 1. 中国科学院西北植物研究所, 陕西杨陵 712100;
    2. 中国科学院昆明植物研究所, 昆明 650204
  • 出版日期:1997-03-15 发布日期:2016-06-14

ANATOMICAL STRUCTURES OF YOUNG STEMS AND LEAVES OF SOME CARAGANA SPECIES WITH THEIR ECOLOGICAL ADAPTABILITIES

Chang Zhao-yang1, Zhang Ming-li2   

  1. 1. Northwestern Institute of Botany, Academia Sinica, Yangling, 712100;
    2. Kunming Institute of otany Academia Siniea Kuming Heilongtan 650004
  • Online:1997-03-15 Published:2016-06-14

摘要: 对采自我国的5种锦鸡儿属植物的幼茎及8种锦鸡儿属植物的叶片进行了解剖学观察和研究,结果表明这5种锦鸡儿的幼茎具有相同结构,其特征是具皮层纤维束(5-7束),周皮层发达。叶片的解剖结构与生态环境有关,森林和草原种的旱生结构不如高原荒漠种发达,差异主要在于有无下皮层、海绵组织与栅栏组织分化程度及单宁含量等方面。以川西锦鸡儿为代表的高寒荒漠种在解剖结构上的特化,表明长期对高寒生境的适应,促使其更为强烈地分化出旱生结构,因而具有明显的生态适应性。

关键词: 锦鸡儿属, 解剖结构, 生态适应性

Abstract: We deal with the anatomy of young stems and leaves of some Caragana species, the results are as follows:the young stems of all five observed species are identical in general structure, which have the characteristics of 5-7 cortical strands of fibers and developed periderm, in accordance with those of some other species by previous reports.The structure differences of leaves of eight observed species are mainly in the following aspects:with or without hypoderm, differential degrees of palisade and spongy tissue, and quantities of tanniniferous contents in mesophyll.The specialization of anatomical structure in Caragana erinacea, a species of high altitude representatives of Xizang (Tibet) and Sichuan, reflects the adaptation to special habitat of high altitude and cold, and this enablesa plant to differentiate strongly into xeromorphic structure.Therefore, it is of obvious significance in ecological adaptability.

Key words: Caragana, Anatomical structure, Ecological adaptability