桑树芽条枯萎病病原研究 I.病原分离及致病性测定  

STUDIES OF THE PATHOGEN(S) FOR SHOOT AND BUD WILT IN MULBERRY I. ISOLATION OF THE PATHOGEN(S) AND DETERMINATION OF THEIR PATHOGENICITY

作　　者：唐以巡[1] 王忠肃 李发德 张运西 惠波年 

机构地区：[1]西南农业大学 [2]陕西省安康地区蚕研所

出　　处：《蚕学通讯》1996年第2期6-11,共6页Newsletter of Sericultural Science

摘　　要：笔者对陕西省安康地区桑园春季发生的一种梢条和嫩芽枯萎病害的病原作了初步研究,从感病材料各典型病部分离得到桑Ⅰ号菌和桑Ⅱ号菌,经LOPAT部分项目测定及常规致病性测定,究明桑Ⅰ号菌(丁香假单胞杆菌)为该病害主要致病细菌,桑Ⅱ号菌(草生欧氏杆菌)可以引起感染,其症状不如Ⅰ号菌典型,但两菌混合接种有加重病情的现象,故与本病害有密切的关系.A preliminary study was made of the pathogen(s) responsible for the wilt of mulberryshoots and buds which normally occur in mulberry fields each spring at Ankang, shaanxi.Two strains were isolated from the diseased patches and tentatively designated ashMuberry Bacterirum I and Mulberry Bacterium II. LOPAT test and routine pathogenicitydetermination showed them to be pseudomonas syringae van Hall and Erwinia herbicola(Lohnis) Dye. The former appeared to be the chief malignant bacterium causing the wilt.The symptoms caused by E. harbicola were not so distinctive as those caused by P.syringae. The disease worsened when the two pathogens were inoculated in combination.

关 键 词：桑树 病原细菌 致病性测定 

分 类 号：S888.7[农业科学—特种经济动物饲养]