%0 Journal Article
%A Fa-Qi ZHANG
%A Jiu-Li WANG
%A Long-Hua XU
%A Qian CAO
%A Shi-Long CHEN
%T Molecular Phylogeny of Subtribe Swertiinae
%D 2021
%R 10.7525/j.issn.1673-5102.2021.03.011
%J Bulletin of Botanical Research
%P 408-418
%V 41
%N 3
%X <p>It was difficult to classify the Subtribe Swertiinae in both taxonomical and phylogenetic in Gentianaceae. To understand the relationship and phylogeny of intergenetic and intra-genetic of Subtribe Swertiinae， 86 species and variants were performed with maximum likelihood（ML） and Bayesian inference methods（BI） based on the sequences of chloroplast DNA <i>mat</i>K and <i>rbc</i>L regions. The key evolution period points of Subtribe Swertiinae were estimated through Bayesian analysis of molecular sequences using MCMC. The phylogenetic relationships of Subtribe Swertiinae inferred from molecular evidence were examined against the taxonomic circumscriptions in Ho Ting-nong system（2015）. The result revealed that： ①Subtribe Gentianinae and Swertiinae were monophyletic and sister groups. ②<i>Swertia，</i><i>Gentianella</i>， <i>Comastoma </i>and<i> Lomatogonium </i>were paraphyletic in relation to each other. ③Speciation of 49（85.96%） species occurred in succession after 4 Ma， and 39（68.42%） species occurred in succession after 2.5 Ma. ④With respect of intra-genetic relationships of <i>Swertia</i>， the taxonomic treatment between subgen. <i>Swertia</i> and subgen. <i>Ophelia</i> were supported by the phylogenies results， while the taxonomic treatment of sect. <i>Ophelia</i> and sect. <i>Platynema</i> were partially supported. ⑤The intergenetic phylogeny of <i>Sinoswertia，</i><i>Swertia， Gentianella， Comastoma </i>and<i> Lomatogonium </i>need further study， the systematic position of sect. <i>Frasera</i> was still uncertain.</p>
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2021.03.011