一、前言世界不少国家的植物育种者都在广泛开展将小麦近缘异属植物的高度抗病基因导入栽培小麦的研究。 1939年美国开始研究利用属间杂交将长穗偃麦草的抗锈病基因导入普通小麦。后来美国农业部的Sando偶然发现带有抗叶锈基因的偃麦草染色体的一部分转移到了小麦染色体上这样一种易位系统,方使该基因的研究工作步入正轨。1967年俄克拉何马农业试验站利用这个易 I. INTRODUCTION Plant breeders in many countries of the world are conducting extensive research on introducing the highly resistant genes of the genus Triticeae into cultivated wheat. In 1939, the United States began to study the use of interspecific hybridization of the rust-resistant genes of Erigeron elongatus into common wheat. Later, Sando of the USDA accidentally discovered that a part of the chromosome of the chromosome with the leaf rust resistance gene was transferred to such a translocation system on the wheat chromosome to put the gene research on the right track. 1967 Oklahoma Agricultural Experimental Station to use this easy