披碱草属4种植物叶下表皮微形态特征  

Micromorphology of Leaf Lower Epidermis of 4 Species Plants of Elymus L.

作　　者：王海清[1,2] 徐柱[1] 祁娟[1,3] 

机构地区：[1]中国农业科学院草原研究所,农业部草地资源生态重点开放实验室,呼和浩特010010 [2]中国农业科学院研究生院,北京100081 [3]甘肃农业大学草业学院,兰州730070

出　　处：《科技导报》2009年第4期80-84,共5页Science & Technology Review

基　　金：国家重点基础研究发展计划(973计划项目)项目(2007CB106800)

摘　　要：披碱草属(Elymus L.)是禾本科小麦族中一个重要的多年生属,借助光学显微镜对披碱草属4种植物的叶下表皮微形态特征进行分类鉴别。结果表明,脉间长细胞为近长方形,垂周壁形状为浅波状、深波状;有短细胞存在,呈椭圆形、孪生;气孔器副卫细胞呈圆屋顶形、平屋顶形;硅质乳突存在于脉间长细胞上;表皮细胞大小、垂周壁式样、气孔器大小和硅质乳突等特征在种间存在一定的差异,可以作为本属种间分类鉴别的参考依据,从而为该属种质资源的合理利用及开发提供解剖学依据。Elymus L. is an important perennial genus within the tribe Triticeae. The micro morphology of leaf lower epidermis of 4 species of Elymus L. were examined under light microscope （LM）. The results show that the leaf lower epidermis of Elymus L. were characterized by long rectangle cells, sinuolate or sinuat anticlinal wall, presence of short cells in shape of an ellipse and in twins, round or plat tectiform subsidiary cells, silica bodies in intercostal long cell. But some characteristics were different among these species, including the size of surface cells and the pattern of its antichnal wall, the size of stomas, silica ceils, which can be used for their identification. The study on the micro morphology of leaf lower epidermis could provide some anatomy evidences, useful in reasonable utilization and exploitation of the germplasm resource.

关 键 词：披碱草属 叶下表皮 微形态 

分 类 号：Q944[生物学—植物学]