我国目前玉米种质研究仍以常规方法为主,对其血缘了解及杂种优势群的划分仍依靠系谱来源。因系谱资源有限,导致对某些种质的血缘、种群归属地了解受限,进而影响育种工作。因而如何更好的了解该区玉米种质的遗传基础,准确的划分杂种优势类群,提高组配强优势的杂交组合的效率,增强杂种优势的早期预见性是玉米育种界亟待解决的关键问题。SSR标记技术的发 At present, the research on maize germplasm in China is still mainly based on the conventional methods, and the understanding of its blood relationship and the division of heterotic groups still rely on pedigree sources. Because of the limited pedigree resources, resulting in the blood of some germplasms, the ownership of the limited understanding of the population, thereby affecting the breeding work. Therefore, how to better understand the genetic basis of maize germplasm in this area, accurately classify the heterotic groups, improve the efficiency of the combination with strong heterosis and enhance the early predictability of heterosis are the key problems to be solved urgently in maize breeding. SSR marking technology hair