研究在离体培养条件下小麦抗、感赤霉病品种不同外植体对赤霉病菌粗毒素的反应。结果表明,随着赤霉病菌粗毒素浓度的提高。小麦幼穗及花药的出愈率降低,幼穗愈伤组织生长量减少、分化能力降低;抗赤霉病品种幼穗愈伤组织的存活率、相对生长量和分化频率降低的幅度均小于感病品种,抗病品种幼穗愈伤组织的抗坏血酸氧化酶及多酚氧化酶活性受粗毒素影响的程度小于感病材料。说明小麦成株抗赤霉病和幼穗愈伤组织抗赤霉粗毒素具有一致性。 The effects of different explants on resistance to Fusarium graminearum crude toxin in wheat cultivars with resistance to Fusarium oxysporum under in vitro culture were studied. The results showed that with the increase of crude toxin concentration of Fusarium graminearum. The young calli and anther had lower curability, less young callus, and lower differentiation ability. The survival rate, relative growth rate and differentiation frequency of young callus in resistant varieties were less than those in susceptible varieties Ascorbic acid oxidase and polyphenol oxidase activities in young callus of disease-resistant cultivars and resistant cultivars were less affected by crude toxin than susceptible materials. The results showed that there was consistency between the resistance of wheat plants to Fusarium graminearum and the resistance of young panicle calluses to crude toxin.