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草业学报 ›› 2009, Vol. 18 ›› Issue (2): 169-174.

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青藏高原东缘3种风毛菊属植物的核型研究

高天鹏1 , 王转莉2, 郭怀清2, 王一峰2,3*, 方向文3   

  1. 1.兰州城市学院化学与环境科学学院,甘肃 兰州 730070;
    2.西北师范大学生命科学学院,甘肃 兰州 730070;

    3.兰州大学干旱与草地农业生态教育部重点实验室,甘肃 兰州 730000
  • 收稿日期:2008-06-03 出版日期:2009-04-20 发布日期:2009-04-20
  • 作者简介:高天鹏(1964-),男,甘肃庆阳人,教授,博士。E-mail:zkgtp@163.com
  • 基金资助:
    甘肃省科技支撑计划(0804NKCA075),甘肃教育厅科研基地重点项目计划(08zd-14)和兰州市科技发展计划(2008-1-169)资助。

Karyomorphology of 3 Saussurea species from the eastern of Qinghai-Tibeten Plateau

GAO Tian-peng1, WANG Zhuan-li2, GUO Huai-qing2,
WANG Yi-feng2,3, FANG Xiang-wen3   

  1. 1.School of Chemistry and Environment Sciences, Lanzhou City University, Lanzhou 730070, China;

    2.College of Life Science, Northwest Normal University, Lanzhou 730070, China;
    3.State
    Key Laboratory of Arid and Grassland Agroecology at Lanzhou University,
    Ministry of Education, Lanzhou 730000, China
  • Received:2008-06-03 Online:2009-04-20 Published:2009-04-20

摘要: 本研究报道了产于青藏高原东缘3种风毛菊属植物的染色体数目和核型。研究结果表明,3个种的染色体数目和核型如下:甘肃风毛菊为2n=2x=32=12m+16sm+4st,核型属2B型;大耳叶风毛菊为2n=2x=26=10m+14sm+2st,核型属2A型;波缘风毛菊为2n=2x=26=6m+20sm,核型属2B型;这3个种均为二倍体,并且在染色体中均未发现随体和B染色体。

Abstract: Chromosome numbers and the karyotypes of 3 Saussurea species are studied in the eastern edge of Qinghai-Tibeten Plateau. The chromosome numbers and the karyotypes were as follows: karyotype of S. kansuensis was diploid (2n=2x=32=12m+16sm+4st) and belongs to stebbings 2B type; karyotype of S. macrota was diploid (2n=2x=26=10m+14sm+2st) and belongs to stebbings 2A type; karyotype of S. undulata was diploid (2n=2x=26=6m+20sm) and belongs to stebbings 2B type. No satellites and B chromosomes have been found in these 3 species.

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