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植物研究 ›› 2008, Vol. 28 ›› Issue (6): 684-688.doi: 10.7525/j.issn.1673-5102.2008.06.009

• 论文 • 上一篇    下一篇

米心水青冈基因组DNA提取及RAPD反应体系优化

周则刚;方炎明*;王标   

  1. (南京林业大学,南京 210037)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-11-20 发布日期:2008-11-20
  • 通讯作者: 方炎明
  • 基金资助:
     

Genomic DNA Extraction and Optimization of RAPD Analytic Conditions of Fagus engleriana

ZHOU Ze-Gang;FANG Yan-Ming*;WANG Biao   

  1. (Nanjing Forestry University,Nanjing 210037)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-11-20 Published:2008-11-20
  • Contact: FANG Yan-Ming
  • Supported by:
     

摘要: 采用4种方法对米心水青冈基因组DNA进行提取,通过比较得出改良CTAB法提出的DNA纯度较高,能够达到扩增要求,因此采用此方法用于正式DNA的提取。适合米心水青冈的RAPD反应体系为:反应体积为25 μL,模板DNA40 ng,引物0.8 μmol·L-1Taq聚合酶1.25 U,Mg2+浓度2.0 mmol·L-1,dNTP浓度0.16 mmol·L-1。适合米心水青冈RAPD扩增程序: 94℃预变性3 min,一个循环,94℃变性30 s,37℃退火1 min,72℃延伸2 min,45个循环。

关键词: 米心水青冈, 水青冈属, 遗传多样性, RAPD

Abstract: Total DNA in leaf tissue of Fagus engleriana was extracted by four methods. Improved CTAB method was proved as the best one. The DNA sample obtained by this method was fit for RAPD experiment. RAPD reaction system(25 μL):40ng DNA template, 0.8 μmol·L-1 primer,Taq DNA polymerase 1.25 U, 2.0 mmol·L-1 Mg2+, 0.16 mmol·L-1 each dNTP. PCR amplification program was denaturation at 94℃ in advance for 3 min,then followed by 45 cycles,each cycle: denaturation at 94℃ for 30 s,anneal at 37℃ for 1 min and extention at 72℃ for 2 min.

Key words: Fagus engleriana, Fagus, genetic diversity, RAPD

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