%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 WANG Yong WANG Qing-Feng
%A GUO You-Hao
%A <br>刘星
%A 王勇
%A 王青锋
%A 郭友好
%J 植物分类学报
%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 I. taiwanensis DeVol, 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=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=ACB22D77D53AF776BE3F554EEA83024E&aid=F93AAE6BB4289B00&yid=C3ACC247184A22C1&vid=1371F55DA51B6E64&iid=E158A972A605785F&sid=381FB4265090A8E0&eid=35E8A259891FB32F&journal_id=0529-1526&journal_name=植物分类学报&referenced_num=12&reference_num=25