大麦叶锈病是由叶锈病菌PucciniahardalG。tth引起的。此病在美国的东南部和中西部有零星发生。但已是大麦上相对重要的病害之一。在美国除了在弗吉尼亚州种植的大麦品种不发病外，其余在大多数州种植的品种都易感叶锈病。二十世纪五十年代中期，弗吉尼亚州立大学首先进行将抗 Barley leaf rust is caused by leaf rust PucciniahardalG. caused by tth The disease sporadically occurs in the southeast and midwest of the United States. But it is one of the relatively important diseases on barley. In the United States, except for the varieties of barley grown in Virginia are not affected, the rest of the varieties planted in most states are susceptible to leaf rust. The mid-1950s, Virginia State University will be the first to be resistant