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近年来,我省各地小麦白粉病有逐渐加重的趋势,对小麦产量及品质影响较大。研究此病已经成为目前生产和科研上需要解决的问题。为了明确有性世代的有关生物学特性,笔者从1981年11月至1982年6月进行了一些试验研究。结果表明:闭囊壳在田间的形成与寄主生育期有关,即在孕穗后才形成闭囊壳;闭囊壳形成之后,如遇高湿,可在24小时后形成子囊,但在3天之内不形成子囊孢子;子囊孢子形成后,可在湿润的基物上放射,放射高度达2.5cm。
In recent years, wheat powdery mildew around the province has gradually increased the trend of greater impact on wheat yield and quality. The study of the disease has become the current production and research needs to be addressed. In order to clarify the biological characteristics of the sexual generation, the author from November 1981 to June 1982 carried out a number of experimental studies. The results showed that the formation of the closed shell in the field was related to the growth period of the host, that is, the formation of the closed shell after booting. After the formation of the closed shell, the ascapsia could form after 24 hours in the case of high humidity, Within the formation of ascospores; ascospores formed, the substrate can be wet in the radiation, radiation up to 2.5cm.