摘要
栅锈菌种Melampsora spp.的分类过去主要根据其寄主、转主寄主范围及冬孢子形态特征;但用这个原则对杨树上栅锈菌分类是很困难的。因为:1.冬孢子的相似性,大部分杨树栅锈菌的冬孢子在形态上区别不显著;2.多寄主性;3.交叉发生性;一种杨树甚至同一棵树上能同时有两种栅锈菌存在;4.缺转主寄主性;即有些杨树栅锈菌不经转主寄主而完成生活史;5.强制接种可以使非寄主植物发病。由于分类中遇到的上述困难,使杨树栅锈菌的分类转向了夏孢子阶段的性状。Kraa-
The author chose 45 OTU' s (namely 45 poplar rusts species) from the world, and chose 24 non-redandant characters in Uredinia, Telia, hosts and alternate hosts of these 45 OTU's. The operational basis of numerical taxonomy as presented by Sneath and Sokal. In this study 24 non-redundant equally weighted qualitative or qualitative characters representing 45 OTU's were entered into a basis data matrix, Cluster analysis (UPGMA) and principal component analysis (PCA) were produced from the original matrix. The results of UPGMA and PCA are the same, and show that 45 OTU's are classified into 14 groups. It means there are 14 poplar rusts species in the world. The 14 species are the following:
1 M. pruinosae Tranz. 2 M. laricis Hartig. 3 M. pinitorqua Rost. 4 M. pulcherrima Maire. 5 M. magnusiana Wagn. 6 M. rostrupii Wagn. 7 M. abietis-populi S. Imai ex S. Ito 8 M. medusae Thuem. 9 M. abietis-canadensis (Farl,) Ludwig. 10 M. occidentalis Jacks. 11 M. ciliata Barcl. 12 M. microspora Tranz. 13 M. larici-populina Kleb. 14 M. allii-populina Kleb.
The present paper gives the difference of some similar species. The author also discuss the affinity of the species and the evolution of some species, and think that it is very important to know all the poplar species and the affinity of them for the poplar introducing and the poplar resistant breeding.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1989年第1期86-92,共7页
Scientia Silvae Sinicae
关键词
杨树栅锈菌
聚类分析
主成分分析
Poplar rust
Melampsora
Numerical taxonomy
Cluster analysis
Principal component analysis
