中国樟科厚壳桂属系统发育与物种多样性研究  

A study on the phylogeny and species diversity of the genus Cryptocarya in China

作　　者：曹关龙 邹典洋 周润 李朗[1,3] 李捷 Cao Guan-Long;Zou Dian-Yang;Zhou Run;Li Lang;Li Jie(Laboratory of Plant Phylogenetics and Conservation,Center for Integrative Conservation,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Kunming 650223,China;University of Chinese Academy of Sciences,Beijing 100049,China;Center of Conservation Biology,Core Botanical Gardens,Chinese Academy of Sciences,Mengla,Yunnan 666303,China)

机构地区：[1]中国科学院西双版纳热带植物园综合保护中心,植物系统发育与保护生物学实验室,昆明650223 [2]中国科学院大学,北京100049 [3]中国科学院核心植物园保护生物学协同中心,云南勐腊666303

出　　处：《植物科学学报》2021年第4期349-357,共9页Plant Science Journal

基　　金：国家自然科学基金项目(31970222)。

摘　　要：本研究利用形态性状和2个分子标记(ITS和RPB2),对国产厚壳桂属(Cryptocarya)物种进行系统发育研究,并简要分析其物种多样化的成因。结果显示,形态和分子证据均支持将国产厚壳桂属物种划分为两个组:离基三出脉组和羽状脉组。云南、海南、广西和广东地区可能是国产厚壳桂属物种分化的“摇篮”,这些地区分布着我国90%以上的厚壳桂属物种。大多数国产厚壳桂物种形态特征十分相似,分子序列也没有显著差异,推测可能是近期物种快速分化形成所致。We combined morphological characters and molecular markers(ITS and RPB2)to study the phylogeny of Cryptocarya species in China,and briefly discussed the causes of species diversity.Results showed that both morphological and molecular evidence supported the division of Cryptocarya species in China into two groups according to their leaf venation characters:i.e.,triplinerved leaf group and pinninerved leaf group.Furthermore,Hainan,Yunnan,Guangxi,and Guangdong may be the“cradles”of species differentiation,with more than 90%of Chinese Cryptocarya species distributed in these areas.The morphological characters of most Cryptocarya species in China were very similar,and there were no significant differences in their molecular sequences.This may be due to recent rapid radiation of the species.

关 键 词：厚壳桂属 形态性状 分子系统发育 物种多样性 辐射进化 

分 类 号：Q949.747.5[生物学—植物学]