内蒙古6种沙生柳树叶片解剖结构的抗旱性分析  

Analysis of Drought Resistance by Leaf Anatomical Structure of Six Species of Sandy Willows

作　　者：董建芳[1] 李春红[1] 刘果厚[1] 周世权 苏亚拉图[1] 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019

出　　处：《中国沙漠》2009年第3期480-484,共5页Journal of Desert Research

基　　金：国家自然科学基金项目(30560128)资助

摘　　要：利用常规石蜡切片、光学显微镜观察的方法,对内蒙古地区6种沙生柳树叶片的解剖结构进行比较分析。结果表明,6种柳树的叶片结构具有相似性,均为全栅型的等面叶,表皮均具有角质层,主脉为双韧维管束,栅栏组织发达,5~6层。差异表现在角质层和表皮厚度、主脉和叶片厚度、栅栏组织的厚度等方面。应用SAS和SPSS软件进行分析,根据几种柳树叶片的结构特征,得出抗旱性大小顺序依次为：黄柳、砂杞柳、沙柳、乌柳、筐柳、小红柳。An experiment was conducted to observe the leaf anatomical structures of six sandy willows in Inner Mongolia under optical microscope with the paraffin-section method. Results show that the six species of sandy willows are analogical in leaf structure--They are all total-palisade isolateral leaf; The vascular bun- dles are bicollateral; Palisade tissues are well-developed with five to six layers. Analysis of variance showed that there were significant difference （ a 〈0.05） in thickness of cuticle, epidermis, leaf, midrib of the plants and palisade tissue among the six willows. According to the differences of leaf structure and based on the SAS （Statistical Analysis System） software and SPSS statistical analysis software, there is an order of drought resistance ability from high to low： Salix gordejevii 〉 Salix kochiana 〉 Salix psammophyla 〉 Salix cheilophila 〉 Salix lincaristipularis 〉 Salix microstachya var. bordensis .

关 键 词：沙生柳树 叶片 解剖结构 抗旱性 

分 类 号：Q945.78[生物学—植物学]