共查询到10条相似文献，搜索用时 46 毫秒
1.
采用正交设计方法,对影响铜鱼(Coreius heterodon(Bleeker))ISSR-PCR扩增结果的5个因素,如Mg2+、dNTP、引物、TaqDNA聚合酶和模板DNA的浓度,在4个水平上进行了比较优化,建立了适合铜鱼的最佳ISSR-PCR反应体系:在25μL反应体系中含有1.5 mmol/L Mg2+,0.16 mmol/L dNTP,0.2μmol/L引物,1UTaqDNA聚合酶和140 ng模板DNA.检验结果表明,采用该反应体系对铜鱼进行ISSR-PCR扩增可获得多态性高,稳定性和重复性好的电泳条带. 相似文献
2.
松江鲈鱼ISSR-PCR反应体系的建立及优化研究(英文) 总被引：4，自引：0，他引：4
[Objective] The aim of this study is to establish and optimize the ISSR-PCR system in roughskin sculpin(Trachidermus fasciatus Heckel).[Method] By using the primer of ISSR-63,the concentrations of Taq DNA polymerase,Mg2+,dNTPs and primer were optimized by orthogonal design for establishing the suitable ISSR-PCR system in roughskin sculpin;moreover,the suitable anneal temperature was yielded from gradient PCR on temperature.[Result]The optimized ISSR-PCR system(20 μl reaction volume)in roughskin sculpin was proved to be:2.5 mmol/L Mg2+,250 μmol/L dNTPs,0.25 μmol/L primer,1 U Taq DNA polymerase,30 ng DNA template and 1×PCR buffer;and suitable anneal temperature was determined to be 50.8 ℃.The established system was further confirmed by using 24 wild roughskin sculpin samples.[Conclusion]The results lay a foundation for the analysis of genetic diversity and germplasm resources of roughskin sculpin. 相似文献
3.
青海云杉ISSR-PCR反应体系的建立与优化(英文) 总被引：1，自引：0，他引：1
[Objective] The experiment aimed to determine the optimum ISSR-PCR reaction system of Picea crassifolia kom. [Method] Picea crassifolia kom. was used as material to select and optimize influencing factors of ISSR-PCR such as Mg2+, dNTPs, Taq DNA polymerase, template DNA, primers, annealing temperature. [Result] The optimum ISSR-PCR reaction system in 20 μl reaction system was consisted of 1 μl 10×buffer, 1.5 mmol/L Mg2+, 0.2 mmol/L dNTPs, 1.0 U Taq DNA polymerase, 40 ng template DNA, 0.6 μmol/L primers. According to gradient test of annealing temperature in optimum ISSR-PCR reaction system of Picea crassifolia kom, it was found that the optimum annealing temperature of UBC 818 was 54.2 ℃ and the annealing temperature was different for different primers.[Conclusion]The construction of ISSR-PCR reaction system provided technical basis for classification of germplasm resources, construction of genetic map, gene mapping of Picea crassifolia kom. through using ISSR technology. 相似文献
4.
In this study, three methods such as CTAB,SDS and Shanlichun methods were used to extract genomic DNA from the seedling of rape to find the best method. The principle, characters and application of SRAP were introduced. In order to obtain the optimal SRAP reaction system, the factors including concentrations of DNA, dNTP, etc. of reaction system were modified to better the system of rape. Th9 result showed that the optimum concentrations were 15ng DNA template, 0.2mM dNTP, 1.0μM primer and 2.0U Taq enzyme in this 25μL SRAP-PCR system. 相似文献
5.
多花黄精ISSR反应体系的建立及正交优化设计 总被引：1，自引：1，他引：0
通过对多花黄精ISSR-PCR反应中的Taq酶、buffer(Mg2+)、模板DNA、dNTP以及引物5个关键因素进行了5因素4水平的正交设计试验,确立了适合多花黄精基因组DNA的稳定性强、扩增最多数量谱带的ISSR-PCR最优反应体系,即25μL的反应体系中含有1.0 U Taq DNA聚合酶,3.5 mmol.L-1buffer(Mg2+),80 ng模板DNA,0.08 mmol.L-1dNTP和0.16μmol.L-1引物。采用建立的多花黄精ISSR-PCR最佳反应体系进行退火温度梯度试验,确定了引物UBC841的最适退火温度为54.8℃,且最适退火温度因引物而异。这一优化的ISSR-PCR反应体系的建立为今后利用ISSR技术进行黄精种质资源分类、遗传图谱构建和基因定位奠定了良好的技术基础。 相似文献
6.
茶薪菇基因组DNA的RAPD反应体系优化(英文) 总被引：2，自引：2，他引：0
[Objective] The research aimed to screen out optimum RAPD reaction system on genomic DNA of Agrocybe chaxingu Huang.[Method] The single factor experiment was adopted to select the required Mg2+ concentration, template DNA concentration,primer concentration,dNTPs concentration,Taq enzyme concentration and anneal temperature initially.[Result] The optimum reaction system for RAPD amplification of Agrocybe chaxingu Huang was listed as follows:2.5 μl Buffer, 2 mmol/L Mg2+, 75 ng DNA, 0.5 μmol/L primer, 150 μmol/L dNTPs and 2.0 Taq enzyme.The reaction process was also listed as follows: denaturation for 5 min at 92 ℃,35 cycles(1 min at 92 ℃, 1 min for 35.5 ℃ and elongation for 2 min at 72 ℃),10 min at 72 ℃.[Conclusion] The research provided reference for conducting RAPD analysis of and studying genetic relationship and genetic diversity of Agrocybe chaxingu Huang. 相似文献
7.
A simple and efficient method for cloning the flanking genomic sequences of a known DNA region is reported in this study. This method combined partial restriction endonuclease digestion, adaptor ligation, and a single round polymerase chain reaction. Total genomic DNA was partially digested with the frequent-cutting restriction enzyme Mse I. The partially digested products were ligated to an unphosphorylated adaptor. A hot start PCR amplification with Taq polymerase and dNTP was performed with a DNA-specific primer and the adaptor primer complementary to the adaptor and the Mse I recognition site. The amplified products were fractionated, cloned and sequenced. By this method, we cloned the downstream region of a gynoecious marker TG/CAC234 from cucumber （Cucumis sativus L.）. 相似文献
8.
毛白杨ISSR反应体系的建立及优化 总被引：10，自引：0，他引：10
为应用ISSR技术开展毛白杨遗传变异分析、辅助育种、品种鉴定、系统进化等研究,以(GTG)6为引物,通过单因子实验分别研究了退火温度、引物浓度、dNTP浓度、Mg2+浓度、Taq DNA聚合酶用量对毛白杨ISSR-PCR反应的影响,建立并优化了适宜于毛白杨ISSR分析的扩增体系: 20 μL PCR反应体系,1×Taq DNA酶缓冲液(10 mmol/L Tris-HCl, 50 mmol/L KCl, 0.1% Trion X100, pH 9.0),1.5 mmol/L MgCl2,1.0 U Taq酶,10 ng模板DNA,0.2 μmol/L引物,0.2 mmol/L dNTP. 引物(GTG)6的最适退火温度为61℃. 相似文献
9.
HU Guofu YUAN Qiang LI Fenglan WEI Qi HU Baozhong 《东北农业大学学报(英文版)》2007,14(2):7-102
In this study,we used RAPD to analyze four kinds of color-flowered Salvia splendens Ker-Gawl,and the optimal RAPD reaction conditions were the optimal reaction mixture(25μL total volume)that contained 2.0μL 10×buffer,0.45 mmol·L~(-1) dNTPs, 2.0 mmol·L~(-1)Mg~(2 ),2 U Taq DNA polymerase,0.30 umol·L~(-1)primer and 40 ng genomic DNA.Total 84 bands were amplified from 12 primers used,and the differential bands had 28 bands,which was 33% of total bands.In cluster group analysis,the four kinds of color-flowered were divided into two styles.One style is that the red color and red-white color were grouped together,then they grouped with purple color into one cluster,and the white color was another style. 相似文献
10.
采用CTAB法提取叶片DNA,通过单因素试验,研究了Taq DNA聚合酶用量、dNTP、引物和Mg(2+)浓度4种因素对伊贝母ISsR-PCR扩增的影响.结果表明,适于伊贝母ISSR-PCR的反应体系为25μL总体积中含1 x PCR反应缓冲液(无Mg(2+)1.0 U Taq DNA聚合酶、0.6 mmol/L dNTPs、0.4μmol/L引物、1.5 mmol/L MgCl2. 相似文献