分子标记在植物抗病育种中的应用

植物种质库通常有携带抗病基因的植物材料,通过育种的方法将这些抗病基因导入植物是保护植物免于病虫害的重要而有效的方法。当前研究表明,抗病基因分子标记将有利于高效筛选含抗病基因的植物材料。该文简要概述了分子标记的特点,重点分析了其在植物抗病育种研究中的应用,主要在辅助选育多基因聚合体,构建抗病基因相关的遗传图谱,抗病基因定位及克隆,遗传多样性分析等方面进行阐述,并对其发展趋势作出展望。

Marker-Associated Selection for Disease Resistance in Plant Breeding

Plant species commonly carry genes for disease resistance within their collective germplasm base. Introducing resistance genes through plant breeding remains an important and effective means of protecting plants from diseases.DNA markers have enormous potential to improve the efficiency and precision of con?ventional plant breeding via marker-assisted selection(MAS). In this paper,an overview,the advantages of MAS for resistance disease and its most widely used applications in plant breeding,was presented.Four ma?jor applications,such as pyramiding of resistance genes in plant breeding,detection of QTL related to resis?tance and construction genetic map of marker-based combination of resistance alleles,isolation of resistance genes via map-based cloning,and efficient genotyping and estimation of genetic diversity,were reviewed.