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应用数量分类探讨鹅观草属的归属问题

陈守良, 徐克学   

  1.  (江苏省植物研究所,南京)    (中国科学院植物研究所,北京)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1989-05-10 发布日期:1989-05-10
  • 通讯作者: 陈守良

Discussion on the Validity of Roegneria C. Koch (Gramineae) as Genus by Numerical Taxonomic Method

Chen Shou-Liang, Xu Ke-Xue   

  • Received:1900-01-01 Revised:1900-01-01 Online:1989-05-10 Published:1989-05-10
  • Contact: Chen Shou-Liang

摘要:

研究全世界鹅观草属只Roegneria C.Koch中绝大多数种类与其有关属(冰草属、披碱草 属、偃麦草属及赖草属)的外部形态、解剖、细胞等30个性状,应用相关系数抑或距离系数以及各种聚类方法组合所得出的树系图,均明确显示鹅观草属应归入披碱草属。

关键词: 数量分类, 禾本科, 鹅观草属

Abstract:

This  paper  deals  with  the systematic position of Gen. Roegneria C. Koch
 by numerical taxonomic method.  The genus Roegneria C. Koch and its relatively related ge-
nera (Agropyron Gaerth., Elymus L., Elytrigia Desv., Leymus Hochst.) were selected as OTUS.
The numerical classification was based on 30 characters,  of  which  18  are  morphological
(gross and microscopic) and 12 cytological.  The dendrogram  (Fig. 1.) is the optimal one,
which is selected according to the cophenetic correlation coefficient. Moreover, the results of
other cluster methods, which are based on either the correlation coefficient or the distance
coefficients, show the same structure similar to the Fig. 1. Hance, Gen. Roegneria is conside-
red congeneric with Gen. Elymus. According to the priority of International Code, Gen. Roeg-
neria C. Koch should be referred to Gen. Elymus L.
 

Key words: Numerical taxonomy, Gramineae, Roegeria