论文部分内容阅读
本文首次报道甘蔗白叶病在我国福建、广东、广西和云南等蔗区的发生及其病原体的电子显微镜观察结果。研究表明:上述蔗区中有与国外和我国台湾报道相同的白叶病发生,福建蔗区尤为严重;调查过的200多个甘蔗品种或品系中,发病品种有闽糖70/611、闽选703、F134、桂糖—11、云蔗71/388、PR77/3120、Q88、Co740/Co281/PR64/610、H54/775和H54/432等近20个品种;症状上主要有白化和草苗化两类;电子显微镜下,可见病叶韧皮部筛管细胞中有类菌原体存在,球形或椭圆形等,直径约80—800毫微米,健株中则否。
This paper reports for the first time the occurrence of sugarcane leaf blight in sugarcane fields of Fujian, Guangdong, Guangxi and Yunnan in China and the electron microscopic observation of its pathogens. Studies have shown that: the above sugar cane area with the same reported in foreign countries and Taiwan, China, the occurrence of white leaf disease, sugar cane area in Fujian is particularly serious; surveyed over 200 sugarcane varieties or lines, the incidence of varieties of 70/611 Fujian sugar, Fujian election 703, F134, Guitang-11, Yunji 71/388, PR77 / 3120, Q88, Co740 / Co281 / PR64 / 610, H54 / 775 and H54 / 432 and other nearly 20 species; the main symptoms are albino and grass seedlings The two types; electron microscopy, visible diseased leaves phloem sieve cells in the presence of a class of mycoplasma, spherical or oval, diameter of about 80-800 nm, healthy plants are not.