小麦品种对赤霉病的耐病性,以往虽作过广泛研究,但至今未见有抗病品种.可见品种对赤霉病的抗性可能存在着由主要基因支配的真正抗性;而抗性的强弱,则受修饰基因或多基因的支配,即所谓量的抗性.众所周知,赤霉病病原菌是兼寄生性镰刀菌属中的一种,在病菌的整个生活世代中,比较复杂的是容易形成子囊壳.子囊壳一方面作为越冬越夏的重要器官,另方面是在它的形成过程中,产生致病性不同的种种变异种.因此即使发现了真正的抗性基因,并被加以利用,也会立即产生新的生理小种,危害作物. Although the disease resistance of wheat cultivars to Fusarium head blight has been widely studied in the past, no resistant cultivars have been found so far.It is known that the resistance of Fusarium head blight to wheat may have the true resistance dominated by major genes, while the resistance The strength or weakness is dominated by modified genes or polygenes, the so-called quantity resistance.It is well-known that the pathogen of Fusarium graminearum is one of the parasitic Fusarium, which is more complicated in the whole life of the germ Is easy to form ascus shell.On the one hand, as an overwintering summer capsule of important organs, on the other hand is in the process of its formation, produce different pathogenic variants, so even if the discovery of the true resistance gene, and was To be used, will also immediately produce new physiological races, endanger the crop.