从甘薯上分离到的Fusarium solani菌株引起块根表腐,还能从块根一端发生腐烂及茎蔓产生病斑,这是以前未见记述过的。鲁易斯安那州甘薯上三种不同症状中分离得到的菌株,接种之后都可产生三种症状。甘薯的F.solani路易斯安那菌株,在菌落形态和表面不能穿透感病块根的维管束方面不同于北卡罗来那菌株。伤口是F.solni侵染甘薯的先决条件,深伤口可使路易斯安那菌株穿透维管束。六个供试品种之中,Jasper是唯一产生端腐的栽培品种。 Fusarium solani strains isolated from sweet potatoes cause root rots in roots, rot from root ends and spotted stems that have not previously been described. Strains isolated from three different symptoms of sweet potato in Louisiana produce three symptoms after inoculation. The F. solani Louisiana strain of sweet potato differed from North Carolina in terms of colony morphology and vascular bundles whose surface could not penetrate the diseased tuberous roots. The wound is a prerequisite for F.solni to infect sweet potato, and deep wounds allow Louisiana strains to penetrate the vascular bundle. Of the six tested varieties, Jasper is the only cultivar that produces end rots.