【摘要】 [目的]确定适合宽叶缬草RAPD分析的DNA提取方法以及建立最佳RAPD反应体系。[方法]比较宽叶缬草基因组DNA的两种提取方法(经典CTAB法、试剂盒法);采用正交设计L16(45),针对Taq DNA聚合酶浓度,d NTP浓度,Mg2+浓度,引物浓度,DNA模板浓度进行RAPD扩增,确立最佳RAPD反应体系。[结果]综合比较,试剂盒法较适合宽叶缬草基因组DNA提取;25μl最适宽叶缬草RAPD反应体系为:2.0 U Taq DNA聚合酶、0.4 mmol/L d NTP、4.0 mmol/L Mg2+、4.0μmol/L随机引物、60 ng模板DNA、2.5μl 10×buffer。[结论]试剂盒DNA提取法和正交优化的反应体系适用于宽叶缬草的RAPD分析,为进一步研究黔产宽叶缬草药材遗传多样性奠定了基础。更多还原

【Abstract】 [Objective]To select a suitable method of DNA extraction and RAPD reaction system for Valeriana officinalis L. var. latifolia Miq. [Methods]To compare the genomic DNA extraction method from CTAB and extraction kit. The suitable RAPD reaction system was establish by orthogonal design L16( 45). [Results]The extraction kit was suited to extract the genomic DNA of Valeriana officinalis L. var. latifolia Miq. The optimal conditions in 25 μl RAPD system were 2. 0 U Taq DNA Polymerase,0. 4 mmol / L d NTP,4. 0 mmol / L Mg2 +,4. 0 μmol/L Primer,60 ng DNA template,2. 5 μl 10 × buffer. [Conclusion]The extraction kit and the optimized reaction system by orthogonal design was suitable for RAPD analysis of Valeriana officinalis L. var. latifolia Miq,which provided the base to analyze genetic diversity of Valeriana officinalis L. var. latifolia Miq.更多还原