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林业科学 ›› 2002, Vol. 38 ›› Issue (3): 49-51.doi: 10.11707/j.1001-7488.20020309

• 论文及研究报告 • 上一篇    下一篇

5种国产苏铁的核型和核型进化

郑芳勤 张晓萍 潘爱芳 何田华   

  1. 福州市国家森林公园,福州350012;北京大学生命科学学院,北京100871中国科学院植物研究所系统与进化植物学开放研究实验室,北京100093
  • 收稿日期:1999-11-27 修回日期:1900-01-01 出版日期:2002-05-25 发布日期:2002-05-25

KARYOTYPES AND KARYOTYPICAL EVOLUTION IN FIVE CYCAS SPECIES OF CHINA

Zheng Fangqing,Zhang Xiaoping,Pan Aifang,He Tianhua   

  1. Fuzhou National Forest Park Fuzhou350012;College of Life Sciences,Peking University Beijing100871
  • Received:1999-11-27 Revised:1900-01-01 Online:2002-05-25 Published:2002-05-25

摘要:

本文报道了中国产5种苏铁的核型,叉叶苏铁2n=22=4m+4sm+2st+12T;多歧苏铁2n =22=4m+4sm+2st+12T;苏铁2n=22=4m+6sm+12T;台东苏铁2n=22=4m+6sm+12T;台湾苏铁2n=22=4m+4sm+2st+12T。文中并对苏铁属的核型变异和演化进行了讨论

关键词: 核型, 苏铁属, 进化

Abstract:

Karyotypes of five species of Cycas were studied.The results showed that the numbers of chromosomes of five Cycas species were 2n=22; C.micholitzii:2n=22=4m+4sm+2st+12T;C.multipinnata:2n=22=4m+4sm+2st+12T;C.revoluta:2n=22=4m+6sm+12T;C.taitungensis:2n=22=4m+6sm+12T;C.taiwaniana:2n=22=4m+4sm+2st+12T.The variation and evolution of karyotypes in Cycas were also discussed in this paper.

Key words: Karyotype, Cycas, Evolution