授粉后外源DNA(基因)导入技术是实现作物基因转移的分子育种新途径。我们采用这一技术将抗白粉病的大麦DNA导入感病小麦品种(以二棱大麦品种80S—111为供体,小麦花培品种花76为受体)后产生多种变异类型。本文主要通过对后代5个抗白粉病稳定的株系的抗性表现、与已知基因的比较、籽粒氨基酸成分的变化 Introduction of foreign DNA (gene) after pollination is a new way of molecular breeding to realize crop gene transfer. We used this technique to generate a variety of variants of barley-resistant barley DNA into susceptible wheat cultivars (S. glutinosa 80S-111 as a donor and a wheat cultivar 76 as a receptor). In this paper, five resistant strains of powdery mildew resistance in the offspring of the main lines of resistance performance, compared with known genes, changes in grain amino acid composition