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引言玉米不仅是人们食用的主要粮食之一,而且在工业、医药上用途也很广泛。但玉米在生产和贮藏过程中,往往会因遭受病原真菌,特别是种子传带真菌的侵染而发病,既影响玉米生产又降低使用价值,甚至有的霉变种子引起家畜死亡。1938年卜德(Potor)曾用种子发芽办法检查过123个玉米品种,他发现凡种子发芽率降低的,都是带有玉米干付病菌(Diplodia)。1954年冀永显等曾检查了国营通北机械农场4个小麦品种的发芽率平均低于60％,经发芽检查和分离培养后,发现主要是小麦根付病菌(Helminthosporiumsativum)引起,种子采用氯化乙基汞拌种后,其发芽率除一个品种不显著外,其余三
Introduction Corn is not only one of the main foods people eat, but also widely used in industry and medicine. However, during the production and storage of corn, the disease often occurs due to infection by pathogenic fungi, especially seed-borne fungi, which not only affects the corn production but also reduces the use value, and even the mildew seeds cause the death of livestock. In 1938 Potor had examined 123 maize varieties by means of seed germination and found that all seeds with reduced germination rates were carried with Diplodia. In 1954, Ji Yongxian et al. Examined the germination rate of four wheat cultivars under the state-owned T’aicong Machinery Farm on average less than 60%. After germinating and isolating and culturing, it was mainly caused by Helminthosporium sativum. The seeds were treated with ethyl chloride Mercury after dressing, the germination rate except one species is not significant, the remaining three