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中国农学通报 ›› 2014, Vol. 30 ›› Issue (30): 259-264.doi: 10.11924/j.issn.1000-6850.2014-1190

• 生物技术科学 • 上一篇    下一篇

短芒披碱草SRAP-PCR 体系的建立和优化

顾晓燕,马啸   

  1. 四川农业大学,四川农业大学
  • 收稿日期:2014-04-23 修回日期:2014-04-23 接受日期:2014-08-06 出版日期:2014-10-31 发布日期:2014-10-31
  • 通讯作者: 马啸
  • 基金资助:
    国家科技支撑计划“南方优质饲草高效生产加工利用关键技术研究与集成示范”(2011BAD17B03);四川省科技支撑计划“川西北短芒披 碱草分子生态学及抗旱生理研究”(2011SZ0162)

Establishment and Optimization of SRAP-PCR Reaction System for Elymus breviaristatus

  • Received:2014-04-23 Revised:2014-04-23 Accepted:2014-08-06 Online:2014-10-31 Published:2014-10-31

摘要: 通过单因子和正交设计两种试验方法,对短芒披碱草SRAP-PCR体系进行优化,得到短芒披碱草20 μL SRAP-PCR 最优反应体系为:Mg2+ 2.00 mmol/L、引物0.40 μmol/L、Taq DNA聚合酶1.0 U、dNTPs 250 μmol/L、DNA 30 ng 和10×buffer 2 μL;各因素水平变化对PCR 反应影响从大到小依次是:Mg2+、引物、Taq 酶、dNTPs 和模板DNA。运用该优化体系对6 份短芒披碱草材料进行验证,电泳结果显示扩增条带多态性高,清晰无杂带。该优化体系的建立有助于将SRAP标记技术用于短芒披碱草的遗传育种等研究。

关键词: 相关性, 相关性

Abstract: The SRAP- PCR for Elymus breviaristatus was optimized using the single factor test and the orthogonal design test in the study. The optimized SRAP- PCR system for E. breviaristatus was: 2.00 mmol/L MgCl2, 0.40μmol/L primers, 1.0 U Taq DNA polymerase, 250μmol/L dNTPs, 30 ng DNA template, 2μL 10×PCR buffer in the total volume of 20μL. The results showed that the order for the most influenced factor to the least influenced factor was: Mg2+ , primer, Taq polymerase, dNTPs and DNA template. The optimized PCR system was confirmed using six E. breviaristatus accessions. The electrophoresis results showed that the amplified bands were highly polymorphic and clear, further indicating that the optimized system was reliable. The optimized SRAP- PCR system could be used for genetics and breeding studies in E. breviaristatus or other Elymus species.