国产香茶菜属十三个分类群的细胞学研究(英文)  

Cytology of Thirteen Taxa in the Genus Isodon(Lamiaceae:Nepetoideae) from China

作　　者：向春雷[1] 陈亚萍[1,2] 船本常男 彭华[1] 

机构地区：[1]中国科学院昆明植物研究所东亚植物多样性与生物地理学重点实验室,云南昆明650201 [2]中国科学院大学,北京100049 [3]日本昭和药科大学,药学基础教育与研究中心

出　　处：《植物分类与资源学报》2014年第5期561-568,共8页Plant Diversity

基　　金：Knowledge Innovation Project of the Chinese Academy of Sciences(KSCX2-EW-J-24,KSCX2-EW-Z-1);National Natural Science Foundation of China(31270245,31110103911);State Key Laboratory of Systematics and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences(LSEB2012-08)

摘　　要：对国产11种2变种共16个居群的香茶菜属植物的染色体数目进行了研究。除线纹香茶菜细花变种以外,其它种类的染色体数目均为首次报道。研究结果表明,有12个物种为二倍体,其染色体数目均为2n=24,推测该属植物的染色体基数为x=12。而细锥香茶菜既有染色体数目为2n=24的居群,也存在2n=48的居群,表明该种为二倍体或四倍体,同时2n=48的染色体数目也是香茶菜属内的首次报道。This paper reports the chromosome numbers of 11 species and two varieties of Isodon from 16 populations in China. For all taxa except I. lophanthoides var. graciliflorus, chromosome numbers are reported here for the first time. All taxa are counted as diploid （2n=24） ： I. albopilosus, 1. coetsa, l.flabeUiforrnis, l.forrestii, I. gesneroides, I. lophanthoides var. graciliflorus , I. oreophilus vat. elongatus , I. parvifolius , I. pleiophyllus , I. polystachys , I. racemosus , 1. scoparius, and I. weisiensis. Thus, x = 12 is inferred as the basic chromosome number of lsodon. In addition, the chromosome number 2n = 48, which is newly recorded for the genus, is also reported in one population of 1. coetsa, indicating the species to be diploid and tetraploid.

关 键 词：染色体数目 横断山脉 香茶菜属 多倍体 

分 类 号：Q942[生物学—植物学]