部分菊属与亚菊属植物的形态学聚类及亲缘关系分析

Morphological characters cluster and phylogenetic relationship analysis of several Dendranthema and Ajania species

对18份菊属植物、2份亚菊属植物及2个两属间杂种的24个形态性状和1个生物学性状进行统计,并对获得的信息数据运用数量分类学聚类方法进行聚类分析。结果表明:Dendranthema arcticum与其他菊属植物的形态相差较大,单独成一类,其他21份材料聚为一类;野菊与菊花脑、异色菊与甘菊、龙脑菊与那贺川野菊两两间形态相似;毛华菊与日本野生菊属植物有较近亲缘关系,日本野生菊属植物较我国野生菊属植物进化;亚菊属矶菊与纪伊潮菊间形态相似,且与菊属植物形态相近,表明两属间有很近亲缘关系。本研究的形态性状聚类结果与传统分类结果基本吻合,表明所涉及的性状指标可以作为菊属系统发生关系研究的有效辅助指标。

Twenty four morphological and 1 biological characters of 18 Dendranthema species, 2 Ajania species and 2 interspecific hybrids were investigated, and the obtained information data were analyzed by the quantitative taxonomy cluster method. The results were as follows. Dendranthema arcticum was separately gathered as a branch, and the other 21 species clustered into another group, and this implied that D. arcticum had more morphological differences than other species. Close relationships were observed between D. indicum and D. nankingense, D. dichrum and D. lavandulifolium, D. japonicum and D. yoshinaganthum, respectively. D. vestitum showed a relatively closer relationship with Japanese Dendranthema wild species, and the Japanese Dendranthema wild species were more developmental than the Chinese Dendranthema wild species. Ajania pacifica was similar with A. shiwogiku var. kinokuniense ： they both had a close relationship to the taxa of Dendranthema. The results obtained through morphological cluster analysis were overall in cocidence with the results of classical classifcation, which indicated that the morphological characters employed in this study could be used as effective assistant characters for phylogenetic relationships researches of Dendranthema.