菟丝子属

方法分别采用PCR产物直接测序法和克隆测序法，对菟丝子属7个种rDNA的ITS区（包括ITS-1,5.8Srdna和ITS-2）进行序列测定。

Methods The sequences of rDNA ITS region ( including ITS-1, 5.8S rDNA and ITS-2 ) were determined from 7 species of Cuscuta by the direct or clone sequencing of PCR products .

结论NJ法建立的发育树与形态学分类基本相符，为菟丝子属植物分类鉴定提供了重要的分子依据。

Conclusion The phylogenetic tree based on NJ method corresponds with the morphological classification , which provides an important molecular basis for the classification and determination of Cuscuta genus .

菟丝子属植物的寄主广泛。非中心分布

Cuscuta spp have wide ranges of host . Noncentral Distribution

菟丝子属杂草普查及防治试验简报菟丝子属植物的寄主广泛。

Preliminary report on host plants and control of Cuscuta spp . Cuscuta spp have wide ranges of host .

结论：Ⅳ和Ⅶ为首次自菟丝子属植物中分得，Ⅰ，Ⅱ和Ⅴ为菟丝子的特征性化学成分。

Conclusion : Compounds ⅳ and ⅶ were isolated from Cuscuta for the first time , and ⅰ,ⅱ and ⅷ were characteristic constituents for this vegetable drug .

菟丝子：菟丝子属植物一年生无叶寄生草本植物菟丝子属，缺少叶绿素，有细长蜷曲黄色或浅红色茎，开白色小花。

Dodder : any of various leafless , annual parasitic herbs of the genus Cuscuta that lack chlorophyll and have slender , twining , yellow or reddish stems and small whitish flowers .