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本文利用透射电镜对小麦白粉病菌与不同抗性寄主相互作用中乳交反应的超微结构进行了系统研究。结果表明：在超微结构上乳突反应是所有侵染位点的共有特征；大量线粒体、多聚核糖体、高尔基体及各种小囊泡参与了小麦乳突的形成；进入乳突沉积区的小囊泡首先形成一个个结构致密的小颗粒，然后堆积起来形成乳突的内部主体和核心，其外围是细胞器解体后沉积的一层染色淡而均匀的无定形物质；乳突沉积开始的早晚、沉积速度及持续时间决定着乳突最终的形态结构特征及其抗性强弱；乳突抗性取决于乳突沉积的早晚与速度，而不是最终沉积量即乳突的大小。乳突抗性强的材料如KhaplixCc8总是在入侵栓进入前已形成较完整的半圆形乳突。而高感寄主如高加索，绝大部分乳突物质是在病菌入侵栓进入后沉积的，所形成的多是沿吸器颈部周围沉积的筒状元抗性乳突。病菌侵染点附近寄主细胞壁上过氧化物酶活性的增强是所有寄主的一种普遍反应，且无明显的抗侵入作用。
In this paper, transmission electron microscopy was used to study the ultrastructure of the milky cross reaction in the interaction between wheat powdery mildew and different resistant hosts. The results showed that the mastoid reaction was the common feature of all the infection sites on the ultrastructure. A large number of mitochondria, polysome ribosomes, Golgi bodies and various vesicles were involved in the formation of wheat papillae. Of the small vesicles first formed a compact structure of small particles, and then piled up to form the internal body and core of the papillae, the periphery of the organelles deposited after deposition of a layer of light and uniform staining of amorphous material; papillary deposition began Sooner or later, the deposition rate and duration determine the final morphological characteristics and resistance of mastoid. The mastoid resistance depends on the rate of morning and evening deposition of papilla rather than the final deposit. Mastoid-resistant materials such as KhaplixCc8 always form a more complete semicircular papilla before the invasion of the plug. The host of high sense, such as the Caucasus, the vast majority of mastoid material is deposited in the invasion of bacteria invasion after the bolt, the formation of mostly along the suction around the neck of tubercle cylindrical resistance mastoid. Enhancement of peroxidase activity on the host cell wall near the infection site of the bacteria is a common response of all hosts with no apparent anti-invasive effect.