中国柳属繁柳组的叶表皮微形态特征及其分类学意义  

Leaf Epidermal Microfeatures of Salix Sect. denticulatae in China and Its Taxonomical Significance

作　　者：郭琦[1] 张志翔[1] 朱纯[1] 

机构地区：[1]北京林业大学,北京100083

出　　处：《东北林业大学学报》2014年第12期53-58,共6页Journal of Northeast Forestry University

基　　金：国家自然科学基金资助(31110103911)

摘　　要：使用扫描电镜对中国繁柳组34个种的叶表皮微形态进行观察。结果表明繁柳组中大部分种类在蜡质层类型,气孔形态,气孔外拱盖等方面有显著差异。其中,蜡质层类型有5种,分别是平滑蜡质层、壳状蜡质层、痂状蜡质层、锥形纤维体和鳞片状纤维体,其中锥形纤维体和鳞片状纤维体均为柳属所特有的蜡质类型。气孔外拱盖形态主要分为隆起和扁平2种,其中27种气孔外拱盖隆起,所占繁柳组34个种的比例为84.3%。叶表皮微形态对繁柳组一些表型相似的种类有很好的鉴别作用,对验证繁柳组分类处理问题具有重要意义。We studied the leaf epidermal microfeatures of 34 Salix Sect.denticulatae of China under scanning electronic micro-scope.The wax layer of Salix can be divided into five types , smooth layer, crust, fissured layer, conicoids and scale-like conicoids.Among those types, conicoids and scale-like conicoids are exclusively found in Salix.The morphology of outer stomatal ledge can be mainly divided into upheaval and smooth , and among them 27 species have ridgy outer stomatal ledge with the proportion of 84.3%.The leaf epidermal microfeatures is useful to classify the similar species and verify the classi -fication problem of S.Sect.denticulatae.

关 键 词：繁柳组 叶表皮 扫描电镜 微形态特征 分类学意义 

分 类 号：Q944-3[生物学—植物学]