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植物研究 ›› 2010, Vol. 30 ›› Issue (1): 12-17.doi: 10.7525/j.issn.1673-5102.2010.01.004

• 论文 • 上一篇    下一篇

变豆菜属植物叶表皮微形态及分类学意义

马永红;张雪梅;曾春婷;赵欢   

  1. 西华师范大学生命科学学院,南充 637002
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-20 发布日期:2010-01-20
  • 基金资助:
     

Micro-morphology of Leaf Epidermis and Its Taxonomical Significance of Sanicula L.

MA Yong-Hong;ZHANG Xue-Mei;ZENG Chun-Ting;ZHAO Huan   

  1. College of Life Science,China West Normal University,Nanchong 637002
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-20 Published:2010-01-20
  • Supported by:
     

摘要: 对变豆菜属(Sanicula L.)6种13个居群植物的叶表皮特征进行光学显微观察,并测定了相应的数量指标。结果表明,变豆菜属植物叶表皮形态较为一致:上表皮几乎全为多边形,垂周壁平直或弓形弯曲;下表皮多为不规则形,垂周壁浅波状、波状至深波状;气孔散生,均为不等型。但表皮细胞垂周壁式样、气孔长短轴之比等细微特征在种间存在差异,可以区分种类。因此,叶表皮特征对于变豆菜属种类的划分和亲缘关系的确定具有一定的分类学意义。

关键词: 变豆菜属, 叶表皮微形态, 分类学意义

Abstract: Leaf epidermis of 6 species and 13 populations of Sanicula were observed under light microscope and some quantity index was measured by analyses system of microphotograph. The results revealed that the epidermal structure is the same type: Almost adaxial epidermis are polygonal shapes and their anticlinalwalls are mainly straight-arched, abaxial epidermis are irregular and their anticlinalwalls undulate to sinuate. The stomata are scattered and anisocytic. But the types of anticlinalwall and the proportionment of length to width of stomatal aperture ect. are different among species. Leaf epidermal morphology may verify the systematic relationships and classification of Sanicula.

Key words: Sanicula L., leaf epidermis micro-morphology, taxonomical significance

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