斑龙芋属植物的系统发育分析

运用分支分类分析方法对斑龙芋属及其近缘属进行系统发育分析,以4个属的15个种作为15个分支分类单位,选择菖蒲科的菖蒲作为外类群,从斑龙芋属植物特征中选取了14个性状作为建立数据矩阵的基本资料,并以外类群比较和通行的形态演化规律,及核型演化规律为依据对这些性状进行极化,采用改进的最大同步法和最小平行法进行分类运算,按照最简约的原则,运用演化长度较短的最大同步法谱系分支图,作为讨论的基础,讨论了斑龙芋属及其近缘属的系统关系。

Phylogenetic analysis of the genus Sauromatum

Cladistic analysis was conducted on all three species in the genus Sauromatum Schott and twelve species in its close-relative genera as fifteen cladistic taxonomic units(CTUs). Acorus calamus L. in family Acorusaceae was selected as out-group. Forteen charaters of Sauromaum Schott were selected. Two principles, namely out-group comparison and generally acceptable rules of morphological evolution,were used for polarison of these selected characters. The data matrix from fifteen in-group species and characters were analyzed with the improved maximal same step method and minimal parallel evolutionary method. A parsimonious cladogram was then constructed by the improved maximal same step method with shorter evolutionary step and used as the basis for analysis of the systematic relationship of Sauromatum Schott and its relative genera.