中国特有属苞藜属的系统学研究  

Phylogenetic Study of the Chinese Endemic Genus Baolia

作　　者：李波卡 冯虎元[1] 潘建斌[1] LI Boka;FENG Huyuan;PAN Jianbin(School of Life Sciences, Lanzhou University, Lanzhou 730000, China;2State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China)

机构地区：[1]兰州大学生命科学学院,兰州730000 [2]中国科学院植物研究所,系统与进化植物学国家重点实验室,北京100093

出　　处：《西北植物学报》2021年第7期1137-1147,共11页Acta Botanica Boreali-Occidentalia Sinica

基　　金：第二次青藏高原综合考察研究(2019QZKK0301);国家标本平台教学标本子平台(2005DKA21403-JK);兰州大学基础学科拔尖学生培养计划学生创新项目。

摘　　要：苞藜属(Baolia Kung et G.L.Chu)根据1978年在甘肃和四川交界的迭部县发现的苞藜(Baolia bracteata Kung et G.L.Chu)而建立,但其系统学地位从未在分子水平上得到解决。该研究分析了包含苞藜属的苋科(Amaranthaceae Juss.)32属48个物种的核基因片段(ITS)和叶绿体基因片段(rbcL、atpB-rbcL),构建了其分子系统发育树,探讨了苞藜属的生物系统学关系。结果表明:(1)苞藜属位于藜亚科(Chenopodioideae Burnett)。(2)苞藜属与虫实属(Corispermum L.)在约晚渐新世至中中新世出现分化。(3)虫实族(Corispermeae Moq.)与藜族(Chenopodieae Dumort.)关系密切。Baolia Kung et G.L.Chu was established on the basis of Baolia bracteata Kung et G.L.Chu described in 1978 from Diebu County on the border between Gansu and Sichuan provinces,China.However,its systematic position has not been resolved at the molecular-level.This study analyzed the nuclear DNA(ITS)and chloroplast DNA(atpB-rbcL,rbcL)markers of 48 species belonging to 32 genera(including Baolia)of the family Amaranthaceae,constructed the molecular phylogenetic trees of Amaranthaceae and discussed the biosystematic relationship of Baolia.The results indicate that:1.Baolia is nested within the subfamily Chenopodioideae Burnett;2.Corispermum L.and Baolia diverged from each other from the Late Oligocene to the Middle Miocene;3.Corispermeae Moq.and Chenopodieae Dumort.have a close relationship.

关 键 词：分子系统发育 分子钟 苋科 苞藜属 

分 类 号：Q949.745.1[生物学—植物学]