华北蓟属植物的化学分类初探

本文对华北地区蓟属ＣｉｒｓｉｕｍＡｄａｎｓ．１６种植物的甲醇提取液紫外吸收光谱（ＵＶ）进行了比较研究。结果表明，蓟属植物的叶较其它部位的ＵＶ具有较好的稳定性和代表性，其光谱的特征可以作为属下分类的重要依据，其化学分类结果与形态分类基本一致。根据光谱特征，结合形态学及有关的细胞学和同工酶方面的资料，重新确立了Ｓｅｃｔ．Ｐｓｅｕｄｏ－Ｅｒｉｏｌｅｐｉｓ（Ｎａｋａｉ）Ｋｉｔａｍ．和Ｃ．ｓｅｇｅｔｕｍＢｇｅ．的组级和种级地位，最后，作者进一步讨论了光谱特征在化学分类中的意义。

A Preliminary Study on Chemotaxonomy of Cirsium Adans. from North China

In this paper, 16 species of Cirsium Adans. ( Compositae) from North China were examined for their UV-spectra of methylic extraction from powdered leaf samples. The result shows that their UV-spectra are variable and so distinct as to allow the identification of individual sections and species. On the basis of the UV-spectra, 2 taxa, Section Pseudo-Eriolepis (Nakai) Kitam. and C. segetum Bge. are established, which is supported by the evidences from morphology, karyotype and isoenzyme. In addition, the taxonomic significance of the UV-spectrum has been discussed.