Application of Nuclear rDNA Phylogeny in Coniferopsida and Taxaceae

查看全文 作　　者：Qian [1]ZHOU;Minjie [1]JIANG;Bida [1]GAO

机构地区：[1]Department of Bioinformatics, Hunan Agricultural University

出　　处：《Agricultural Science & Technology》索引2016年第17卷第8期,共4页

摘　　要：Due to differences in morphology, ecology and biology, the phylogenesis of Coniferopsida and Taxaceae remains controversial, and the phylogenetic relationship of Pseudotaxus is yet to be confirmed. Three rDNA regions, ITS1, 5.8S rDNA, and ITS2, were prepared for 77 species belonging to seven families of Coniferopsida, including Taxaceae. Maximum parsimony(MP)and Neighbor-joining(NJ) analyses were performed. Results showed that:(1) the Coniferopsida species formed three branches:(Taxaceae, Cephalotaxaceae, Cupressaceae, Taxodiaceae),(Araucariaceae, Podocarpaceae), and(Pinaceae);(2) Taxaceae included Taxus, Pseudotaxus, Amentotaxus, and Torreya; and(3) Pseudotaxus belonged to Taxaceae, with a support rate of 97%in MP analyses and 99% in NJ analyses. 关键词：RDNA序列系统发育红豆杉科应用白豆杉属最大简约法亲缘关系 ITS1

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Application of Nuclear rDNA Phylogeny in Coniferopsida and Taxaceae

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