甜椒疫病是甜椒的主要病害。发病植株根部腐烂,细根的皮层极易与木质部分离,茎基部变色缢缩,呈水渍状,最后整株枯萎,叶片一碰即落。该病的症状也可以表现在果实上,病果局部水溃状,变色软腐,最后变成乌黑色。湿度大时,病斑周围偶尔可见白色绒毛状的菌丝层。1985～1987年,我们从上海郊县田间发病植株上,广泛采集样本,分 Sweet pepper disease is the main disease of sweet pepper. The root rot of diseased plants, fine roots of the cortex easily separated from the xylem, the base of the discoloration shrinking, was water-like, and finally the whole plant withered, the leaves touch that drop. The symptoms of the disease can also be manifested in the fruit, fruiting bodies local water ulceration, discoloration soft rot, and finally turned black. When humidity is high, white villous mycelium may be seen around the lesion occasionally. From 1985 to 1987, we collected samples widely from the field plants in the suburbs of Shanghai