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疱斑病(Blister spot)是为害苹果果实的一种细菌病害.病原菌为pseudomonas syringae P.V.papulans(Rose.1917)Dhan vantari 1977(Dye等.1980)。近年来在加拿大已成为重要病害,在栽培“陆奥”苹果的果园中为害尤为严重。在同安大略接壤的美国纽约州和密执根州也报导有此病为害。疱斑病可侵染许多品种,但仅在“陆奥”上造成严重经济损失。病原菌侵染果实后,在果实表面形成病斑,使果实失去鲜食价值。受害程度受病原菌数量和当地气候条件的影响,不同果园、不同年份的发病程度变化很大。
Blister spot is a bacterial disease that affects apple fruit, and the pathogen is pseudomonas syringae P.V. papaya (Rose. 1917) Dhan vantari 1977 (Dye et al. 1980). In recent years, it has become an important disease in Canada, especially in the orchards that cultivate “Lu Aus” apples. The disease is also reported in New York State and Michigan, bordering Ontario. Blister spot disease can infect many varieties, but only in the “Lu Austria” caused serious economic losses. Pathogen infection fruit, the formation of lesions in the fruit surface, so that loss of fresh fruit value of the fruit. Affected by the number of pathogens and local climatic conditions, different orchards, the incidence of different years vary greatly.