Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2016, Vol. 24 ›› Issue (3): 699-702.DOI: 10.11733/j.issn.1007-0435.2016.03.033

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The Chromosome Number and karyotype of Two Astragalus Species

QIAO Yong-gang1, WANG Li1, SONG Yun1, LIANG Jian-ping1, FENG Qian-jin2, WANG Jin-sheng1   

  1. 1. College of life Sciences, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
    2. Shanxi University of Traditional Chinese Medicine, Jinzhong, Shanxi Province 030601, China
  • Received:2014-12-10 Revised:2015-11-01 Online:2016-06-15 Published:2016-09-18

两个黄芪亚种染色体数目与核型分析

乔永刚1, 王立1, 宋芸1, 梁建萍1, 冯前进2, 王金胜1   

  1. 1. 山西农业大学生命科学学院, 山西 太谷 030801;
    2. 山西中医学院, 山西 晋中 030601
  • 通讯作者: 王金胜
  • 作者简介:乔永刚(1979-),男,博士研究生,副教授,主要研究方向为药用植物遗传育种,E-mail:sxndqyg@126.com
  • 基金资助:

    山西省科技攻关项目（20140312001-2）；山西农业大学横向科技项目（2014hx60）；山西省高等学校教学改革项目（J2015028）；山西农业大学育种基金（2014yz07）资助

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Abstract:

Previous studies suggested that the chromosome number of Astragalus membranaceus (Fisch.) Bge. and Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao were 2n=16. Karyotype analysis showed that the chromosome number of this two species were 2n=18, by using routine chromosome preparation method of root tip. Four small chromosomes on both species were found. Karyotype formula of A. membranaceus (Fisch.) Bge. was K(2n)=2x=18=4sm+14m and the karyotype belonged to "2B" Stebbins. Karyotype formula of A. membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao was K(2n)=2x=18=6sm+12m and the karyotype belonged to "2C" Stebbins.

Key words: A. membranaceus (Fisch.) Bge., A. membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao, Chromosome number, Karyotype

摘要：

前人研究认为膜荚黄芪（Astragalus membranaceus（Fisch.）Bge.）与蒙古黄芪（Astragalus membranaceus（Fisch.）Bge.var.mongholicus （Bge.）Hsiao）染色体数目为2n=16。本试验采用根尖染色体常规制片方法，观察了膜荚黄芪与蒙古黄芪种子根尖有丝分裂相。结果显示：膜荚黄芪与蒙古黄芪染色体数目为2n=18，这2种植物各有4条小染色体。膜荚黄芪染色体核型公式为K（2n）=2x=18=4sm+14m，核型类型为2B型。蒙古黄芪染色体核型公式为K（2n）=2x=18=6sm+12m，核型类型为2C型。

关键词: 膜荚黄芪, 蒙古黄芪, 染色体数目, 核型

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