欧文氏杆菌引起梨果腐的一种新病害研究初报

近年来，在山东泰安发现梨果实软腐的新病害。从病部分离到一种细菌。根据个体形态，培养性状，生理化反应，致病性郑州 研究结果，确认致病菌为大黄颈腐欧文氏杆菌Ｅｒｗｉｎｉａｒｈａｐｏｎｔｉｃｉ（Ｍｉｌｌａｒｄ）Ｂｒｕｋｈｏｌｄｅｒ，非梨火疫菌Ｅ．ａｍｙｌｏｖｏｒａ。

Identification on bacterium pathogen causing a new disease of pear fruit rot

A new disease,pear fruit rot cased by pathogenic bacteria,has been found in Taian country,Shandong province.According to the individual morphology,cultural characters,physiological and biochemical reaction,and pathogenicity of the organism,the causal organism is identified as Erwinia rhapontici (Millard)Burkholder,Not E.amylovora. It is the first report in the world that E.rhapontici cause pear rot.