运用形态特征和分支、表征方法探讨广义花楸属( Sorbus L. ) 属下分类关系

园艺学报 ›› 2007, Vol. 34 ›› Issue (3): 723-728.

运用形态特征和分支、表征方法探讨广义花楸属( Sorbus L. ) 属下分类关系

郑冬梅, 张明理³

(中国科学院植物研究所, 北京100093)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-06-25 发布日期:2007-06-25

A Cladistic and Phenetic Analysis of the Infrageneric Relationships of Sorbuss.l. (Maloideae, Rosaceae) Based on the Morphological Characters

ZHENG Dong-mei; ZHANGMing-li³

( Institute of Botany, the Chinese Academ y of Sciences, Beijing 100093, China )

Received:1900-01-01 Revised:1900-01-01 Online:2007-06-25 Published:2007-06-25

摘要/Abstract

摘要： 选取了广义花楸属(Sorbus L. ) 属下6个亚属的34种植物作为研究对象, 并以Pyrus, Cratae
gus, Photinia, Malus和Cotoneaster作为外类群, 对其典型的30个形态性状数据进行编码, 采用分支分析和
表征分析的方法研究花楸属属下类群的分类关系。结果表明, 广义花楸属是一个非单系类群, 外类群完全
镶嵌于其中; 属下的6个亚属各自不能形成单系, 只有花楸亚属( Subgenus Sorbus) 形成不严格的单系。
作者初步认为, 花楸属应该仅包含复叶类群( Subgenus Sorbus) , 或者还会有Subgenus Cormus。由于其余的
4个亚属尚不能形成规则的单系或聚类, 故进一步的研究宜采用分类群的更多性状或运用分子系统学的途
径。

关键词: 花楸属, 形态特征, 分支分析, 表征分析

Abstract: Based on 30 morphological characters, 34 species representing six subgenera from Sorbus
s.l. , and five outgroup s, Pyrus, Crataegus, Photinia, Malus and Cotoneaster, were samp led to investigate the
infrageneric relationships by means of the cladistic and phenetic analysis. The results indicate that Sorbus s.l.
was entirely not amonophyly, and outgroup swere nested in Sorbus s.l. Six subgenera in Sorbus s.l. could al
so not formed monophyly respectively, only subgenus Sorbus with p innate leaves seems constituted a cluster.
Therefore, the infrageneric relationship s should be studied by addingmore morphological characters of taxa or
by a molecular systematic app roach.

Key words: Sorbus, Morphological character, Cladistic analysis, Phenetic analysis

郑冬梅;张明理. 运用形态特征和分支、表征方法探讨广义花楸属( Sorbus L. ) 属下分类关系[J]. 园艺学报, 2007, 34(3): 723-728.

ZHENG Dong-mei;ZHANGMing-li. A Cladistic and Phenetic Analysis of the Infrageneric Relationships of Sorbuss.l. (Maloideae, Rosaceae) Based on the Morphological Characters[J]. ACTA HORTICULTURAE SINICA, 2007, 34(3): 723-728.

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