%0 Journal Article
%T Cytology in Three Species of Ainsliaea (Asteraceae-Pertyeae) from Southern China<br>华南地区3种兔儿风属植物(菊科-帚菊木族)的细胞学研究(英文)
%A REN Chen
%A YUAN Qiong
%A <br>任琛
%A 袁琼
%J 热带亚热带植物学报
%D 2012
%I 
%X Chromosome numbers and karyotypes in four populations of three species in the genus Ainsliaea DC. (Asteraceae-Pertyeae) from southern China have been investigated for the first time. The chromosome number of A. henryi Diels was counted to be 2n=24, and the karyotype was formulated as 2n=16m+8sm. The number of A. trinervis Y. C. Tseng was counted to be 2n=26, and the karyotype was formulated as 2n=16m+10sm. Both populations of A. ramosa Hemsl. had 2n=26 and the karyotype of 2n=22m+4sm. In all of the populations studied the chromosomes showed a steady gradation in length from the longest to the shortest, with no evidence of bimodality. The results have confirmed the occurrence of two basic chromosome numbers, x=12 and x=13, in the genus Ainsliaea, with x=13 very likely being the primitive number.
%K Ainsliaea
%K Asteraceae
%K Basic chromosome number
%K Cytotaxonomy
%K Karyotype<br>兔儿风属
%K 菊科
%K 染色体基数
%K 细胞分类学
%K 核型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90ba3d13e7f3bc869ac96fb3da594e3fe34fbf7b8bc0e591&jid=a74f042df90151a4e3ef193e13fd5e1e&aid=d0f2444eed6b6a2a93f5af54f764dd20&yid=99e9153a83d4cb11&vid=a04140e723cb732e&iid=ca4fd0336c81a37a&sid=987eda49d8a7a635&eid=11b4e5cc8cdd3201&journal_id=1005-3395&journal_name=热带亚热带植物学报&referenced_num=0&reference_num=22