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马铃薯白绢病是全国各地马铃薯种植区分布十分普遍的常见性病害,主要为害马铃薯块茎,有时也为害茎基部,造成产量减少和商品性降低,严重时甚至绝产。发病原因:引起马铃薯白绢病的病原菌为半知菌亚门真菌齐整小核菌(图1),有性态为担子菌亚门真菌罗耳阿太菌。齐整小菌核菌菌丝无色,具有隔膜;菌丝构成的菌核初白色,紧贴在寄主上,老熟后产生黄褐色圆形或者椭圆形小菌核(图2),在高温高湿条件下,可产生无色、单胞棍棒状的担子及担孢子。
Potato white silk disease is a common disease widely distributed in potato planting areas throughout the country. It is mainly harmful to potato tubers and sometimes also to the stem base, resulting in reduced yield and reduced merchandises, even when it is severely dead. The cause of the disease: the pathogen causing the disease of Potato Sclerotinia semiautuberculatus subfamiliar with the whole genome of Sclerotinia (Figure 1), the morphological characteristics of Basidiomycotina fungus Rhoeas. Filariomycetes homogeneous colorless mycelium, with a diaphragm; mycelium composed of sclerotia early white, close to the host, after aging cooked brown or oval-shaped small sclerotium (Figure 2), at high temperature and high Wet conditions, can produce colorless, single cell stick-shaped burden and basidiospores.