In order to establish molecular marker-aided selection system of the gene for disease resistance to powdery mildew on Cucumis melo L, with six generation population P1 , P2 , F1 ,F2 , BCr and BCS from a cross between a resistant variety 1A151 and a susceptible variety Hengjing R. R. S. as materials, genetics and molecular marker of the disease resistance gene was studied using wind media inoculation method and bulked segregant method. The results showed that disease resistance was controlled by a single par...