植物分类学报

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中国大戟属13种15个居群的核型报道

薛恒钢; 周颂东; 何兴金*; 余岩   

  1. (四川大学生命科学学院 成都 610064)
  • 收稿日期:2006-03-14 修回日期:2007-08-06 出版日期:2007-09-18 发布日期:2007-09-18
  • 通讯作者: 何兴金 E-mail:xingjinhe@yahoo.com.cnlu

Karyotype in fifteen populations belonging to thirteen species of Euphorbia (Euphorbiaceae) in China

XUE Heng-Gang, ZHOU Song-Dong, HE Xing-Jin*, YU Yan   

  1. (College of Life Sciences, Sichuan University, Chengdu 610064, China)
  • Received:2006-03-14 Revised:2007-08-06 Online:2007-09-18 Published:2007-09-18
  • Contact: HE Xing-Jin E-mail:xingjinhe@yahoo.com.cnlu

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Abstract: In this paper, karyotypes from fifteen populations in thirteen species of Euphorbia (Euphorbiaceae) from China were investigated. The results were as follows: 2n=2x=22=20m (2SAT)+2sm for Euphorbia humifusa (Wangjiang, Sichuan); 2n=2x=22=18m+4sm for E. humifusa (Hongqicun, Beijing); 2n=4x=40=40m for E. thymifolia; 2n=4x=40=36m+4sm for E. maculata; 2n=8x=56=40m+8sm+8st for E. marginata; 2n=4x=40=32m+8sm for E. milii; 2n=6x=60=6m+36sm+12st+6t for E. neriifolia; 2n=6x=60=24m+24sm+12st for E. antiquorum; 2n=4x=28=24m(3SAT)+4sm for E. pulcherrima; 2n=4x=28=16m+12sm for E. cyathophora; 2n=4x=28=28m for E. dentata; 2n=2x=20=12m+8sm for E. lathyris; 2n=6x= 42=36m+6sm for E. helioscopia; 2n=2x=20=14m+6sm for E. esula (Chenjiagou, Beijing); 2n=4x=40=32m+8sm for E. esula (Yingtaogou, Beijing). The karyotypes of two species, E. thymifolia and E. maculata, and the tetraploidy karyotype of E. esula were reported for the first time.

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