THE CLASSIFICATORY SYSTEM STUDY OF PINCEAEBY MEANS OF CLUSTER ANALYSIS
Liu Xingdong Cen Qingya (West River University)
Based on recent years multi-subjects research, this paper discusses the rela-tionchip of all genera in Pinaceae from the angle of quatitative classification by means of cluster analysis and numerical calculation, comprehensively choosing 67 characteristics of ten genera from morphology,anatomy,embryo grouth,cytology,palynology,phytochemistry and biochemistry. Thus a new classificatory system of Pinaceae has been proposed. The results of cluster analysis indicate that (1)A bietoideae consists of Keteleeria,A bies,Tsaga,Cedrus and Pseudolarix which are related; (2)Picea is related to Cathaya,Pseudotsuga is related to Lar-ix,and the former two are related to the latter two,so Laricoideac consists of the four gener-a;(3)Pinus is quite distant from the other genera and singlely forms monotypic Pinoideae.
【CateGory Index】： Q949