为检验轮回选择法在小麦抗赤霉病育种中的应用效果,在人工诱发病害流行的环境中,用三个不同世代的基因库轮选群体进行比较,试验结果表明:随着轮选世代的递增,可育株的发病率、病情指数、平均病小穗数和病粒数都显著减少,群体抗赤霉病性获得增益,同时随轮选次数的增加,组群个体间病小穗数和病粒数的遗传方差随之下降,反映个体间抗性差异的相对减少。在轮选过程中,可育株衍生系的农艺性状逐步获得改良。 In order to test the application effect of the method of cycle selection in the breeding of wheat against Fusarium head blight, three groups of genebanks from different generations were compared in the circumstance of artificial disease-induced disease. The results showed that with the selection of wheat Increasing, the incidence of fertile plants, the disease index, the average number of spikelets and the number of particles were significantly reduced, the population gain resistance to scab resistance, at the same time with the number of rounds increased, The variance of genetic variance with the number of particles decreased, which reflected the relative reduction of the resistance differences among individuals. During the rotation process, the agronomic traits of fertile plant derived lines gradually improved.