Back-cross breeding combined with molecular marker selection was taken to transfer Pm genes such as Pm13,Pm21,Pm30 and Pm33 to Zheng 9023 which is now widely-used. Lines and NILs of Zheng 9023 resistant against powdery mildew were obtained.

• 采用回交育种及分子标记技术相结合将Pm13,Pm21,Pm30和Pm33等抗性基因导入了大面积生产应用的小麦品种郑麦9023之中,获得了抗白粉病的郑麦9023近等基因系,育成郑麦9023抗白粉病的多系品种。