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草业学报 ›› 2012, Vol. 21 ›› Issue (1): 184-189.

• 研究论文 • 上一篇    下一篇

百里香染色体制片优化及核型分析

杨宁1,谈永霞1,2,李巧峡1,贾凌云1,陈锡莲1,刘效瑞3   

  1. 1.西北师范大学生命科学学院,甘肃 兰州 730070;
    2.兰州理工大学生命科学与工程学院,甘肃 兰州 730070;
    3.定西市旱作农业科研推广中心,甘肃 定西 743000
  • 出版日期:2012-02-20 发布日期:2012-02-20
  • 作者简介:杨宁(1973-),女,山东青州人,副教授。
  • 基金资助:
    国家自然科学基金(31160087),甘肃省自然科学基金(0803RJ ZA038),甘肃省教育厅研究生导师项目(1101-06),甘肃省农牧厅(GYC09-10)和西北师范大学科技与知识创新基金(NWNU-KJCXGC-03-58)资助。

Optimization of a chromosome mounting technique and karyotype analysis of Thymus mongolicus

YANG Ning1, TAN Yong-xia1,2, LI Qiao-xia1, JIA Ling-yun1, CHEN Xi-lian1, LIU Xiao-rui3   

  1. 1.College of Life Science, Northwest Normal University, Lanzhou 730070, China;
    2.College of Life Science and Technology, Lanzhou University of Technology, Lanzhou 730070, China;
    3..Dingxi Dry Farming Research and Extension Center, Dingxi 743000, China
  • Online:2012-02-20 Published:2012-02-20

摘要: 采用常规压片法,首次对甘肃康乐地产野生百里香染色体进行核型分析。结果表明,上午8:45-9:15取材,0.04%秋水仙素和0.002 mol/L 8-羟基喹啉溶液等体积混合液处理百里香芽尖2~3 h,改良石炭酸品红染色液染色1 h效果最好;对百里香体细胞染色体数目进行统计,核型分析结果表明,百里香的细胞染色体数为2n=24,其中中部染色体(m)为10对,近中部着色点染色体(sm)2对,其核型公式为2n=2x=24=20m+4sm,核型属2A型,核型不对称系数为59.63%。

Abstract: The karyotype of Thymus mongolicus was analyzed using a chromosome mounting technique. The best sampling time was between 8:45 am and 9:15 am, the best pre-treatment was 0.04% colchicine and 0.002 mol/L 8-hydroxyquinoline mixture (1∶1) for 2-3 h, and the dyeing treatment was 1 h with modified carbolic acid-magenta. Karyotype analysis of T. mongolicus showed that the chromosome number is 24 and the karyotype formula is 2n=2x=24=20m+4sm. Ten pairs are metacentric (m) and 2 pairs are submetacentric (sm). The karyotype of T. mongolicus is 2A and the karyotype asymmetry coefficient is 59.63%.

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