本研究以苏麦3号为染色体供体,一套“中国春”小麦单体系列分别作为受体和轮回母本,连续回交4次,并建立两套独立转育的重复系,对赤霉病抗性进行了染色体定位研究。结果表明,重复系Ⅰ中,苏麦3号染色体2B、3B和6B与赤霉病抗性有关;重复系Ⅱ中,染色体7A、2B、3B和6B与赤霉病抗性有关。由此推断,苏麦3号的抗性基因位于染色体2B、3B和6B上,染色体7A是否具有抗性基因,还有待于进一步证实。2D染色体载有促进赤霉病扩展的感病基因。 In this study, Sumai 3 as a chromosome donor, a set of “Chinese Spring” wheat monomer series as receptor and the cycle of the female parent, back to back four times in a row, and the establishment of two independently transplanted repetitive lines, red Mildew resistance was studied by chromosomal location. The results showed that the chromosomes 2B, 3B and 6B of Sumai 3 were related to the resistance to scab in the repetitive line Ⅰ. The chromosomes 7A, 2B, 3B and 6B were related to the resistance to scab in the repetitive line Ⅱ. Therefore, it is inferred that the resistance gene of Sumai 3 is located on chromosomes 2B, 3B and 6B, and whether chromosome 7A has a resistance gene remains to be further confirmed. The 2D chromosome carries susceptible genes that promote the expansion of scab.