菜豆花叶病毒分离物NBV-7,经苋色藜(Chenopodium amaranticolor)单斑分离后进行鉴定,性状如下: 电镜观察,粒体呈线状,平均长度768nm。 NBV-7接种多种菜豆(Phaseolus vulgrais)品种,为“白籽架豆”、“沙克沙”、“Bouniful”等,出现系统花叶症,高温时白籽架豆出现顶枯。NBV-7在豆科内有较宽的寄主范围,在蚕豆(Vicia faba)“三白”品种、大豆(Glycine max)品种1138-2、豌豆(Pisum The bean mosaic virus isolate NBV-7 was identified by monascus separation of Chenopodium amaranticolor. The characters were as follows: electron microscope observation showed that the granular body was linear with an average length of 768 nm. NBV-7 was inoculated with many varieties of Phaseolus vulgaris, and appeared systemic mosaic diseases such as “white-stalked beans”, “saxa”, “Bouniful”, and the like. NBV-7 has a wide host range within Leguminosae and is widely distributed in Vicia faba “Sanbai” variety, Glycine max variety 1138-2, Pisum