变豆菜属15种植物的果实微形态特征及其分类学意义  

Fruit features of 15 species of Sanicula(Apiaceae) and their taxonomic significance

作　　者：陈志祥 姚雪莹 Stephen R.Downie 王奇志[1] Chen Zhi-Xiang;Yao Xue-Ying;Wang Qi-Zhi(Department of Horticulture,Huaqiao University,Xiamen,Fujian 361021,China)

机构地区：[1]华侨大学园艺系,福建厦门361021 [2]Department of Plant Biology,University of Illinois at Urbana-Champaign

出　　处：《植物科学学报》2019年第1期1-9,共9页Plant Science Journal

基　　金：国家自然科学基金项目(31500162);国家标本平台教学标本子平台项目(2005DKA21403-JK);华侨大学研究生科研创新能力培育计划4资助项目(1611315007)~~

摘　　要：采用扫描电镜对来自北美和东亚的变豆菜属植物(美国7个种,中国8个种)的果实表面微形态进行观察,结合前人对伞形科其他类群果实微形态特征的研究及近年来分子系统学证据,对变豆菜属的种间分类进行研究。结果显示,变豆菜属植物果实的形态大小、皮刺弯曲程度和果柄蜡质纹饰丰富多样。研究表明变豆菜属是一个自然类群,果实表面钩刺结构有利于该属植物的传播及扩散,果实微形态特征具有分类学价值,可作为种间分类的依据。根据变豆菜属果实表面微形态特征,编制了该属植物分种检索表。Scanning electron microscopy and paraffin sections were used to observe the surface micromorphology of Sanicula plants from North America and East Asia(seven species distributed in the United States and eight species distributed in China).Combining previous research on the micromorphological characteristics of other groups from the Apiaceae family and molecular systematic evidence from recent years,the interspecies classification of the genus Sanicula was studied.Results showed the genus Sanicula to be a natural group,with the barb structure on the fruit surface beneficial for dispersal and distribution.Furthermore,the fruit micro-characteristics were useful for explaining the interspecific relationship of the genus.Based on the fruit micromorphological data,a key to the species within the genus Sanicula was compiled.

关 键 词：变豆菜属 果实 微形态 系统分类 

分 类 号：Q944.59[生物学—植物学]