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降低小麦品质的主要病害之一是赤霉病，它主要通过Ｆｕｓａｒｉｕｍｇｒａｍｉｎｅａｒｕｍ病菌在籽粒中产生毒素降低品质。已确定出不同的抗源材料，但多数品种抗性程度还不足。虽然南美和中国抗性种质已用于世界各国的育种项目中，但还不知道这些抗源控制的抗性基因是否有差异。本文目的是确定来自巴西和中国两个小麦品种抗赤霉病的遗传方式和基因数量，据知它们拥有中等至高抗性水平。在与ＣＮ０７９杂交组合中，巴西抗性品种Ｆｒｏｎｔｏｍａ比中国品种宁７８４０更具抗赤霉性。亲本中６个可能的杂交组合衍生的Ｆ２～Ｆ７随机品系在两个接种日期研究了田间抗性表现。用３种方法对病害进行了比较评价。两个抗性亲本表现出各拥有２个一致的主效基因，而４个抗性基因都有差异。其抗性基因结合可产生更高的抗性水平。２个接种日期提供了相同的基因假设。根据方法间和基因假设相似性的基因型相关计算，３种病害评价方法必然地测定了病害在穗中传播的相同基本过程
One of the major diseases that reduce the quality of wheat is scab. It reduces the quality mainly by producing toxins in the grain by Fusariumgraminearum. Different anti-source materials have been identified, but most species are not resistant enough. Although South American and Chinese resistant germplasms have been used in breeding programs in various countries around the world, it is unknown whether there are any differences in the resistance genes controlled by these antigens. The purpose of this paper is to determine the genetic pattern and number of genes for resistance to Fusarium head blight in two wheat cultivars, Brazil and China, and it is known that they possess moderate to high resistance. In the crosses with CN079, the Brazilian resistant cultivar Frontoma was more resistant to Fusarium than the Chinese cultivar Ning 7840. F2 to F7-derived random lines derived from six possible crosses in the parents were used to study the field resistance performance on two inoculation dates. The disease was evaluated by three methods. The two resistant parents showed two identical major genes each, and the four resistance genes differed. Its resistance gene combination can produce a higher level of resistance. Two vaccination dates provide the same genetic hypothesis. Based on genotypic correlations between methods and similarity of genetic hypotheses, the three disease evaluation methods necessarily determine the same basic process of disease transmission in the ear