阴山荠属和泡果荠属的数量分类研究  

A NUMERICAL TAXONOMIC STUDY ON TWO GENERA YINSHANIA AND HILLIELLA (CRUCIFERAE)

作　　者：张渝华[1] 徐克学[2] 

机构地区：[1]浙江省医学科学院药物研究听,杭州310013 [2]中国科学院植物研究所,北京100093

出　　处：《武汉植物学研究》1990年第4期317-324,共8页Journal of Wuhan Botanical Research

摘　　要：阴山荠属和泡果荠属隶于十字花科,两属有一些共同特征,也有一系列性状差异,数量分类结果支持两属处理为各自独立的属。本文同时对属下类群和一些种间关系进行了讨论。The present paper is concerned with numerical classification of two genera Yinshania Ma et Y. Z. Zhao and Hilliella Y. H. Zhang et H. W. Li. An original data matrix, in which there are 27 OTUs of two genera with 35 ecological and morphological characters, was prepared. After computing the (?)standardized matrix and the correlation coefficient matrix, cluster analysis for 27 OTUs was carried out by using 9 cluster methods, among which the UPGMA was shown to be the most suitable one by means of the cophenetic correlation coefficients (Table 3)as the criteria for assessing the best result obtained through cluster analysis. The dendrogram of UPGMA is presented in Figure 1.1. The results show that all these taxa with minut pustulese on the testa surface of valves are divided into two groups, i. e. the genus Yinshania (OTUs 1—12) and the genus Hilliella (OTUs 13—27).2. According to the traditional morphological method, the genus Yinshania is divided into two sections, Sect. Yinshania (OTUs 5,7—12) and Sect. Microcarpae Y. H. Zhang(OTUs1—4,6). The silicle of the former is elongate, but the latter is round. In the dendrogram, Y. furcatopilosa (Kuan)Y. H. Zhang(OTU7) and Y. henryi(Oliv.) Y. H. Zhang(OTU5)are both separated from the other two groups(OTUs1—4, 6 and OTUs 8—12), but from biological point of view it should refer to Sect. Yinshania, because its silicle is elongate. In Sect. Yinshania, both OTU5 and OTU7 are treated as a 'Series', i. e. Ser. Henryanae Y. H. Zhang, different fromSer. Yinshania(OTUs8—12).3. Y. albiflora Ma et Y. Z. Zhao was reduced to a variety, i. e. Y. acutangula(O. E. Schulz)Y. H. Zhang var. albiflora(Ma et Y. Z. Zhao)Y. H. Zhang (OTU 11), by the first author in June, 1987. In the dendrogram it is very close to the Y. acutangula, R=0.715. The first author examined the type specimen (G. Giraldi 2423) of Cochlearia acutangula O. E. Schulz (=Y.acutangula)at the Botanisches Museum, Berlin-Dahlem, in July, 1987, and found that there are not remarkable differences between Y. albiflora a

关 键 词：阴山荠属 泡果荠属 分类 

分 类 号：Q949.748.3[生物学—植物学]