Integrative Biology Journals

Plant Diversity ›› 2007, Vol. 29 ›› Issue (04): 429-433.

• Articles • Previous Articles     Next Articles

Studies on Karyotypes of Five Populations of Rheum tanguticum (Polygonaceae)

HU Yan-Ping1 , 2 , XIE Xiao-Long1 , 2 , WEN Quan3 , ZHAO Xu-Dong1 , 2 , WANG Li1 , LI Yi1   

  1. 1 Northwest Institute of Plateau Biology , Chinese Academy of Sciences , Xining 810001 , China;
    2 Graduate University of Chinese Academy of Sciences, Beijing 100049 , China ;
    3 Qinghai Huangchuan Middle School , Xining 810008 , China
  • Received:2006-10-27 Online:2007-08-25 Published:2007-08-25
  • Contact: LI Yi

唐古特大黄五个居群的核型

胡延萍1 , 2 , 谢小龙1 , 2 , 温 泉3 , 赵旭东1 , 2 , 王 莉1 , 李 毅1

  

  1. 1 中国科学院西北高原生物研究所, 青海西宁 810001 ; 2 中国科学院研究生院, 北京 100049; 3 青海湟川中学, 青海西宁 810008
  • 通讯作者: 李毅

Abstract: The chromosome numbers and karyotypes of Rheum tanguticum in 5 populations were firstly reported in this paper. The results are as follows: karyotype formulae of DW, KQ and DK populations are all 2n = 2x = 22 = 2sm + 20m; JK population is 2n = 2x = 22 = 20m+ 2M; SP population is 2n = 2x = 22 = 2sm + 18m+ 2M . The karyotypes of DW, KQ and JK populations belong to 1A type while DK and SP populations belong to 2A type . The result of Q cluster analysis of five populations shows that the karyotypes of 5 populations differentiate in some degree , which may be caused by different habitats .

Key words: Rheum tanguticum

摘要: 报道了唐古特大黄( Rheum tanguticum) 5 个居群的染色体数目和核型, 结果如下: 大武、柯曲、达卡三个居群均为2n = 2x = 22 = 2sm + 20m; 吉卡居群为2n = 2x = 22 = 20m+ 2M; 松潘居群为2n = 2x= 22 = 2sm+ 18m + 2M。大武, 柯曲和吉卡居群核型类型属于1A 型, 达卡和松潘居群属于2A 型。Q 型聚类分析结果表明, 5 个居群在核型上存在一定分化, 这可能是由不同的生境造成的。

关键词: 核型, Q 型聚类分析FONTFONTP

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