MOLECULAR MARKER-ASSISTED SELECTION OF PLANTS WITH Pm13 AND Pm4 CONFERRING RESISTANCE TO POWDERY MILDEW IN WHEAT

Four resistant and two susceptible individual plants of F 3 generation from crossing between YW243 possessing the gene Pm4b and 70284 possessing the gene Pm13 resistant to powdery mildew in wheat were identified by STS marker of Pm4 and SCAR marker of Pm13 . Results indicated that 2 plants R1 and R4 had both Pm4b and Pm13 resistant genes and 2 plants had Pm4b gene. Of 15 resistant plants of F 4 generation from R1 and R4,13 plants had both Pm4b and Pm13 genes,2 plants had Pm4b . This result showed that the molecular marker assisted selection is an effective method to detect resistance genes pyramiding plants in wheat.