现代分子生物学的变性梯度凝胶电泳(Denaturing Gradient Gel Electrqphoresis,DGGE)技术是土壤微生物群落研究的有效工具,它直接分离土壤微生物的DNA片段,比传统的培养方法更具明显的优势,已成为研究土壤微生物的重要手段之一。对DGGE技术的原理及其在土壤微生物群落研究中的应用情况、优点和局限性进行了介绍。
F2 populations were obtained from the cross between 9801-1 and DIANE.Bulked segregate and RAPD analyses were employed to identify molecules linked to the resistance to powdery mildew.OPP02 amplified about 792 bp polymorphic band in all individuals from 9801-1 and resistant bulk,but absent in all individuals from DIANE and susceptible bulk.By further analysis in F2 segregating population,the polymorphic band was found to be cosegregated with the resistant gene possibly.The fragment was sequenced,and settled a foundation for transforming it into SCAR marker.
