A brief account about cladistic taxonomy. 分类学的新理论 -- 分支分类学.
Method: PCR amplification,DNA sequencing and cladistic analysis. 方法:PCR扩增、DNA序列测定、分支分析。
The citrus phyloge-netic relationship and classification were discussed according to the cladistic relationship. 根据分支关系，讨论了柑桔属植物系统演化关系及分类问题。
This classification is no longer used by paleontologists, who now employ a cladistic approach. 这种分类不再被古生物学家使用，他们现在使用亲缘分支分类法研究。
The cladistic analysis of Trematothoracinae shows that the subfamily is monophyletic. 分支分析结果表明Trematothoracinae为一单系类群。
In cladist ic analysis, the genera of Disporum, Maianthemum and Disporopsis of Po lygonateae were chosen as complex outgroups. 在分支分析中，选择万寿竹属、舞鹤草属和竹根七属作为复合外类群。根据复合外类群比较原则和一般演化规律，确定性状极性。
