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80年代初期,路易斯安娜州和南卡罗来纳州在甘薯蔓上发现一种新病,经连续几个晴天后,在嫩叶上出现症状,叶面上可见白色物质,随后未完全展开的幼叶普遍失绿,在某些情况下还出现畸形。该病害特点是病组织和整株可由失绿恢复正常。此病已遍及路易斯安娜州,在所有田间调查的植株即使不是全部被感染也是大部分被感染。在南卡和北卡两州均呈日益加重的趋势。本研究旨在查明导致甘薯叶片失绿崎形病(也称蔓尖失绿病)的病原,由于此病害似乎
In the early 1980s, Louisiana and South Carolina found a new disease on sweet potato, after several sunny days, symptoms appeared on young leaves and white matter was visible on the leaves, followed by young leaves that were not fully expanded Greenish, in some cases also deformity. The disease is characterized by diseased tissue and whole plant can be recovered from the loss of green. The disease has spread throughout the state of Louisiana and most, if not all, of the plants surveyed in the field are infected. In both South Carolina and North Carolina both showed an increasing trend. The purpose of this study was to identify the causative agent of sweet potato leaves that had lost its greenish-brown disease