【摘要】 在前人对列当科系统发育研究的基础上,追加了肉苁蓉属(Cistanche)的基因序列数据,运用最大简约法、最大似然法和贝叶斯推断方法探讨了其在列当科中的系统位置及列当科中属间关系。基于rps16基因序列及rps16+ITS联合序列建立了列当科系统发育树,结果显示,肉苁蓉属、列当属(Orobanche)以及草苁蓉属(Bos-chniakia)聚在同一进化枝内,肉苁蓉属和列当属表现出最近亲缘关系;列当科中的全寄生类群、半寄生类群和非寄生类群分属在3个不同分支中。更多还原

【Abstract】 Based on previous study of Orobanchaceae,we added sequence data of the genus Cistanche,used maximum parsimony,maximum likelihood and Bayesian inference to perform phylogenetic analysis,and investigated the systematic position of Cistanche in Orobanchaceae,as well as the generic relationships within Orobanchaceae.The phylogenetic trees respectively basing on sequences of rps16 and rps16+ITS revealed that Cistanche,Orobanche,and Boschniakia formed a one single clade,Cistanche was a sister to Orobanche,and holoparasi-tic,semiparasitic and non-parasitic taxon in Orobanchaceae fell into three separate clades.更多还原