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1983--1985年夏,在山东诸成、临朐和安丘等县,发现严重矮化的烟草曲顶病株。采用嫁接法可将此病传染到普通烟草和心叶烟上。电镜观察病毒样品浸出液或部分纯化病毒制剂,可见直径大小为20毫微米的球形粒子。初步观察试验,山东烟草曲顶病的病原同国外报导的甜菜曲顶病病原相似。
1983 - 1985 summer, in Shandong Zhucheng, Linqu and Anqiu counties, found that severely dwarfed tobacco songding strains. Grafting method can be used to spread the disease to ordinary tobacco and heart leaf tobacco. Electron microscopy of the virus sample extract or partially purified virus preparation showed spherical particles of 20 nm in diameter. Preliminary observation and testing, Shandong Tobacco Curvulariae pathogen and abroad reported beet cauliflower pathogen similar.