A wheat-rye lBL/lRS alien translocation line 22/2439 is resistant to wheat powdery mildew in China. Cloning the powdery mildew resistance related genes is useful for understanding the resistance mechanism and disease resistance breeding.

• 小麦-黑麦1BL/1RS易位系99/2439对白粉病表现为近免疫,对其抗白粉病相关基因进行克隆研究不仅有利于阐明其抗病机制,而且对抗病育种有重大意义。