Powdery mildew caused by Erysiphe graminis DC is a severe wheat disease in China, which has become more and more serious recently. Breeding resistant cultivars has been proved the most effective way to control this disease; however, the comprehensive understanding of disease resistance genes is the premise. Up to now, 28 loci with 45 main effective genes were identified in wheat. They were located in different chromosomes respectively. Corresponding for some of them markers had already been found...