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当前位置: 首页 > 文章 > 胡枝子属12种植物叶表皮微形态研究 中国草地学报 2019,41 (4) 57-65
Position: Home > Articles > Studies on the Leaf Epidermal Micromorphology of12Species of the Genus Lespedeza Chinese Journal of Grassland 2019,41 (4) 57-65

胡枝子属12种植物叶表皮微形态研究

作  者：
吴叶;杨文权;刘赢;曹翠兰;寇建村
单  位：
西北农林科技大学草业与草原学院;西北农林科技大学生命科学学院
关键词：
胡枝子属;叶表皮;微形态
摘  要：
利用光学显微镜对12种胡枝子属常见植物的叶表皮微形态特征进行研究,结果表明:12种胡枝子属植物叶表皮细胞形状有3种,分别为不规则形、长方形、不规则形和长方形均有;垂周壁式样有浅波状、深波状、平直—弓形、浅波状和平直—弓形均有4种;依据表皮细胞形状和垂周壁式样,12种胡枝子可以分为5类.气孔器普遍存在于所有类群的下表皮及大部分类群的上表皮上,有无规则型、不等型、平列型3种,以平列型为主;12种胡枝子属植物的气孔器长宽比在1.26~2.11之间,截叶铁扫帚和铁马鞭气孔长轴的差异最显著;气孔器密度在23.7~1135.5个/mm2之间;气孔指数为1.5%~25.7%,各种间差异显著.表皮毛普遍存在于下表皮及大部分类群的上表皮上,长短和密度因种而异.这些叶表皮微形态特征是胡枝子属植物对不同生态环境的形态响应,可作为部分胡枝子属植物种间分类的依据.
译  名：
Studies on the Leaf Epidermal Micromorphology of12Species of the Genus Lespedeza
作  者：
WU Ye;YANG Wen-quan;LIU Ying;CAO Cui-lan;KOU Jian-cun;College of Grassland Agriculture, Northwest A&F University;College of Life Sciences, Northwest A&F University;
关键词：
Lespedeza;;Leaf epidermis;;Micromorphology
摘  要：
The leaf epidermal micromorphology of 12 species in the genus Lespedeza was observed by optical microscope. The results showed that the shape of leaf epidermal cells had 3 types, irregular, rectangular or both. The anticlinal walls had 4 types, sinuolate, sinuate, straight-blow, both sinuolate and straight-blow. 12 species in the genus Lespedeza could be classified into 5 categories according to the shape of leaf epidermal cells and the anticlinal walls. Stomatal apparatus generally existed on the lower epidermis of all the species examined and on the upper epidermis of most species, and were assigned to anomocytic, anisocytic and paracytic types, but mainly in paracytic. The ratio of stomatal orgen length to width of 12 species of Lespedeza was between 1.26 and 2.11, and the difference of stomatal long axis between Lespedeza buergeri and Lespedeza virgate was the most significant. The density of the stomata was 23.7～1135.5/mm~2. The stomatal index was 1.5%～25.7%, which has the significant difference among the species. The length and density of the trichomes varied with the species and presented in the lower epidermis and the upper epidermis of most species. The leaf epidermal micromorphology characteristics are morphological response of Lespedeza plant to the different ecological environments, and can be used as the basis for interspecific taxonomy of some species of Lespedeza.

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