大豆孢囊线虫是大豆生长最重要的病害之一。实践证明,控制该病害最有效的方法是种植抗病品种,因此发掘和鉴定抗性及基因尤为重要。实验通过对300份种质资源对大豆孢囊线虫4号生理小种的鉴定发现一个新的抗源,在对该抗源在进行了遗传分析的基础上,应用分离集团分析法,借助SSR分子标记,对该抗性位点进行了QTL定位分析,发现了4个连锁标记,分别为Sat385,Satt591,Satt155和Satt717,构建了该抗性位点的连锁遗传群。该实验对大豆孢囊线虫的研究具有重要意义。 Soybean cyst nematode is one of the most important diseases of soybean growth. Practice has proved that the most effective way to control the disease is to cultivate resistant varieties, therefore, to identify and identify resistance and genes is particularly important. Based on the genetic analysis of 300 resistant germplasm resources to Soybean Cyst Nematode 4, a new source of resistance was found. Based on the analysis of segregation group, SSR molecule The QTL mapping analysis of this resistance locus revealed four linkage markers Sat385, Satt591, Satt155 and Satt717, respectively, and constructed a linkage group of the resistance loci. The experiment of soybean cyst nematode is of great significance.