三江平原不同生境条件下毛苔草叶解剖结构  

Anatomical structure of Carex lasiocarpa leaves at different habitats in Sanjiang Plain

作　　者：张艳馥[1] 沙伟[1] 薛红[1] 倪红伟[2] 

机构地区：[1]齐齐哈尔大学生命科学与农林学院,黑龙江齐齐哈尔161006 [2]黑龙江省科学院自然资源研究所,哈尔滨150040

出　　处：《生态学杂志》2010年第8期1538-1541,共4页Chinese Journal of Ecology

基　　金：黑龙江省杰出青年基金资助项目(JC03-09)

摘　　要：采用石蜡切片法,应用光学显微镜对生长在三江平原不同生境条件下的毛苔草叶解剖结构进行观察,对硅质层厚度、导管直径和鞘细胞厚度进行测量及统计分析。结果表明:在不同的生境条件下,毛苔草叶片具有相同的解剖结构,均由表皮、叶肉和维管束三部分构成。不同生境条件下生长的毛苔草,环境积水程度会对叶片解剖结构产生一定影响,其中硅质层厚度、鞘细胞厚度与地表积水呈一定的负相关性,导管直径与地表积水呈显著负相关。By using paraffin cut section method, the anatomical characters of Carex Lasiocarpa leaves collected from different habitats in Sanjiang Plain were observed under microscope, and the thickness of silica layer, diameter of conduit, and thickness of ensheathing cell were measured. The C. Lasiocarpa leaves collected from different habitats had the same anatomical structure, i.e., all composed of epidermis, mesophyll, and vascular bundle. The waterlogged depth in the environment had definite effects on the leaf anatomical structure. The thickness of silica layer and of ensheathing cell had definite negative correlation with waterlogged depth, and the diameter of conduit was significantly negatively correlated with the waterlogged depth.

关 键 词：毛苔草 不同生境 解剖结构 

分 类 号：Q948[生物学—植物学]