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Plant Diversity ›› 2006, Vol. 01 ›› Issue (01): 37-40.

• 研究论文 • 上一篇    下一篇

醉鱼草属四个种的核型分析

 陈高1、2,  孙卫邦1**   

  1. 1 中国科学院昆明植物研究所, 云南昆明 650204; 2 中国科学院研究生院, 北京 100039
  • 出版日期:2006-02-25 发布日期:2014-01-14

Karyotype of Four Species in Buddleja ( Loganiaceae) *

 CHEN  Gao-1、2,   Sun-Wei-Bang-1**   

  1. 1 Kunming Insti tute of Botany , Chinese Academy of Sciences, Kunming 650204, China;
    2 Graduate School of the ChineseAcademy of Sciences, Beijing 100039, China
  • Online:2006-02-25 Published:2014-01-14

摘要:

报道了醉鱼草属( Buddleja) 4 个种的染色体核型。云南醉鱼草( B1 yunnanensis ) 的核型公式为2n= 2x=38= 22m+ 16sm, 皱叶醉鱼草( B1 crispa ) 为2n= 2x= 38= 26m+ 10sm+ 2st, 密蒙花( B1 off icinalis ) 为2n= 2x=38= 20m+ 16sm+ 2st, 日本醉鱼草( B1jap onica) 为2n= 2x= 38= 20m+ 16sm+ 2st。日本醉鱼草的核型为2B 型,其它3 个种的核型为2A 型。根据核型分析结果, 结合形态学特征和已有的细胞学资料, 初步讨论了醉鱼草组( Sect1Neemda) 两个系( Series) 可能的演化关系。

关键词: 醉鱼草属, 核型, 演化趋势

Abstract:

The chromosome numbers and karyotypes of the 4 species in genus Buddleja were reported. The karyotype formulas are 2n= 2x= 38= 22m+ 16sm ( B1 yunnanensis) , 2n= 2x= 38= 26m+ 10sm+ 2st ( B1 crispa) , 2n= 2x= 38= 20m+ 16sm
+ 2st ( B1 off icinalis ) , and 2n= 2x= 38= 20m+ 16sm+ 2st ( B1japonica) . Karyotype of B1japonica belongs to Stebbins. s 2B type and other 3 species belong to Stebbins. s 2A type. Based on the cytological data ( karyotypes and the recorded chromosome numbers) and the species morphologies, the evolution trend of the two series in Sect1Neemda was briefly discussed.

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