摘要
为建立适宜新疆野生樱桃李的SSR分子标记技术体系,通过对PCR反应程序、反应体系(DNA模板量、引物浓度、Mg2+浓度、dNTP浓度、Taq酶用量)以及退火温度进行了探索,建立了适宜野生樱桃李的SSR-PCR反应体系。结果表明:在25μL反应体系中,Mg2+1.0 mmol/L、引物0.5μmol/L、dNTPs 0.20 mmol/L、TaqDNA聚合酶1.0 U、模板DNA 30 ng、退火温度为60℃。SSR扩增程序:94℃预变性5 min,35个循环(94℃30 s,60℃1 min,72℃1 min),72℃延伸10 min,可筛选出稳定性好、多态性高的SSR引物。
We have established SSR-PCR system in wild myrobalan plum(Prunus sogdiana Vass.)by optimization of PCR reaction program,reaction system(annealing temperature,template DNA,Mg2+,dNTP,Taq DNA Polymerase and primer).In the end,we got optimum SSR marker systems in wild myrobalan plum.SSR system:template DNA 30 ng,Mg2+ 1.0 mmol/L,dNTP 0.20 mmol/L,Taq polymerase 1 U,primer 0.5 μmol/L in 2.5 μL system,reaction program:initial denaturation step for 5 min at 94℃,followed by 35 cycles at 94℃ for 30 s,60℃ for 1 min and 72℃ for 1 min,followed by a final extension step at 72℃ for 10 min.High stability and polymorphism results had been obtained.
出处
《北方园艺》
CAS
北大核心
2010年第13期120-123,共4页
Northern Horticulture
基金
新疆维吾尔自治区科技计划资助项目(200931101-2)
国家科技支撑计划资助项目(2007BAD3602)