【摘要】 1976年来,广西的扶绥等县,在早稻叶片上出现一种细菌性“短条斑”型的病害,其症状很象稻细菌性条斑病的初期病斑。我们多次分离和致病性测定表明:稻短条斑病菌与细菌性条斑病菌引起的症状,差异明显。稻短条斑病菌致病力较弱,病班短小,不扩展或扩展很慢,其上一般没有菌脓,即有也极少。根据这个特点,我们把它命名为“稻细菌性短条斑病”。稻短条斑病菌与其它已知病菌的一系列性状、生理生化反应的比较研究结果:稻短条斑病菌导细菌性条斑病菌、白叶枯病菌有明显不同;但与李氏禾条斑病菌则完全一致。而且电镜观察稻短条斑病菌与李氏禾条斑病菌同;在水稻和李氏禾叶片上,交互接种也获得成功。这就证明了稻短条斑病菌就是李氏禾条斑病菌(Xanthomonas leersiae Fang et al),稻细菌性短条斑病乃由李氏禾条斑病菌所引起。更多还原

【Abstract】 Since 1976,a bacterial leaf disease of rice was found in the first crop in Fusui and other counties.The symptoms of the disease are similar to those caused by bacterial leaf streak in young stage.However the symtoms caused by the present pathogen are obviously different.The lesions are shorter and enlarge their length slowly.Bacterial exudates on thesurface of lesions are rare.The disease is therefore named bacterial short streak.Comparative studies of the physiogical and biochemical reactions between the two organisms and other known organisms were made.The results indicated that it is distinct from Xanthomonas or yzicola Fang et al and X.oryzae(Uyeda & Ishiyama)Dowson and is entirely consistent withX.leersiae Fang et al.Cross inoculation between this organism and X.leersiae on rice and the common weed Leersia sp.showed that they can cause the same symptoms.The observation with electorn microscope showed that the shape and size of the organism is also like X.leersiae Fang et al.更多还原