%0 Journal Article
%T Chromosome numbers of the Chinese Isoetes and their taxonomical significance<br>中国水韭属植物的染色体数目及其分类学意义
%A LIU Xing
%A WANG Yong
%A WANG Qing-Feng
%A GUO You-Hao
%A <br>刘星
%A 王勇
%A 王青锋
%A 郭友好
%J 中国科学院研究生院学报
%D 2002
%I 
%X Chromosome numbers of four species of Isoetes from China are reported. The basic chromosome number in the four species is x = 11. A chromosome number of 2n = 22 was reported for the first time in I. hypsophila Hand.-Mazz. The 2n =22 was also found for l. taiwanensis DeVoI, being consistent with previous report. I. sinensis Palmer from China has a chromosome number of 2n =44, which is different from that reported for I. sinensis Palmer from Japan (2n = 44, 65, 66,68). Another species of Isoetes from the Yunnan-Guizhou Plateau, which had previously been identified as I. japonica A. Br., has been shown to have a chromosome number of 2n = 22, which is completely different from that reported for the latter species (2n= 66, 67, 77, 87, 88, 89). More intensive studies on this new species should be made. Data from cytology and morphology of Isoetes species in China suggest that they may provide valuable clues for a better understanding of the origin and evolution of the genus Isoetes in East Asia.
%K Isoetes
%K Chromosome number
%K Taxonomical significance
%K China
%K East Asia<br>水韭属
%K 染色体数目
%K 分类学意义
%K 中国
%K 东亚
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=67CDFDECD959936E166E0F72DE972847&aid=0F8EA3B60B45774DD6DF110A0036E27D&yid=C3ACC247184A22C1&vid=1371F55DA51B6E64&iid=E158A972A605785F&sid=381FB4265090A8E0&eid=35E8A259891FB32F&journal_id=1002-1175&journal_name=中国科学院研究生院学报&referenced_num=0&reference_num=0