草莓丛枝病的发现及初步研究  

THE OCCURRENCE AND PRELIMINARY STUDIES ON THE STRAWBERRY WITCHES' BROOM

作　　者：韦石泉[1] 吴元华[1] 

机构地区：[1]沈阳农业大学植保系,沈阳110161

出　　处：《植物病理学报》1994年第2期135-138,共4页Acta Phytopathologica Sinica

基　　金：国家自然科学基金

摘　　要：在沈阳,从表现丛枝症的草莓、春香和宝交早生品种上,分离到新发生的类菌原体(MLO)。用小叶嫁接法测定指示植物草莓EMC和UC—10均能表现出典型的丛枝症(witchetbroom),病叶变小,颜色变浅。将病叶经固定和包埋后,制成超薄切片,于电镜下观察,可见到在韧皮部组织内有大量球形、椭圆形及哑铃形,并具有单位膜结构的类菌原体。用四环素处理病株可减轻症状。The authors have isolated and identified a mycoplasmalike organism (MLO) disease on the strawberry plant in Shenyang. The experiment was carried on during 1987~1990. The diseased plants showed stunting and witches' broom symptoms clearly. Collections were made and observed from two cultivars of strawberry, i. e. ; Hoko-Wase and Haru-Kaori, Which were planted in the suburbs of Shenyang city. This disease could be transmitted to the health indicated strawberry plants by small leaf grafting. The indicative strawberry plants for infection such as : EMC, UC -10, and UC- 4 etc. were shown stunting, chlorotic and witches' broom symptoms. According to the ultra -thin sections of the diseased plant observing under the electron microscope, the authors revealed the presence of mycoplasma - like organisms (MLOs) in the sieve tubes of the diseased strawberry plants. The symptoms could be restrained or lightened by the use of tetracycline treatment, which is also a specific property of MLO disease.

关 键 词：草莓 扫帚病 病害 

分 类 号：S436.68[农业科学—农业昆虫与害虫防治]