马尾树科的系统位置:来自rbcL基因核苷酸序列的证据

SYSTEMATIC POSITION OF THE RHOIPTELEACEAE:EVIDENCE FROM NUCLEOTIDE SEQUENCES OF rbcL GENE

本文根据叶绿体基因ｒｂｃＬ的核苷酸序列证据讨论了单型科———马尾树科的系统关系。数据矩阵中包括了马尾树科及其它“高等”金缕梅类各科，并分别利用Ｃｕｎｏｎｉａｃｅａｅ科的Ｂａｕｅｒａ属，“低等”金缕梅类植物连香树属和枫香树属作为外类群进行分支分析。两种分析的结果是一致的。在ｒｂｃＬ基因树上，马尾树属和被用于分析的胡桃科各属紧密地结合在一起，支持马尾树科和胡桃科有非常近的亲缘关系。

Systematic position of the Rhoipteleaceae was investigated using nucleotide sequences of the chloroplast gene rbcL. Two sets of parsimony analyses were conducted, one using Bauera as the outgroup and the other using Cercidiphyllum Liquidambar as outgroups. The results of these analyses are consistent. Rhoiptelea is allied with sampled Juglandaceous genera in the rbcL phylogeny, suggesting its close relationship with the Juglandaceae.