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赤豆花叶病在北京相当严重,病株达10—40%。病株分离物用常规汁液摩接法接于赤豆幼苗,初生透明褪绿小点或轻微斑驳,后表现花叶及疱斑,重者叶扭折畸形,叶缘缺刻,株矮,(?)小而少。同一病毒接种于豇豆(Vigna sinensis L.)上,与赤豆上的症状无明显的差别。这个病毒的物理属性为:致死温度60—65℃10分钟,稀释限点1∶3000—1∶4000,体外存活仅24小时。病株所结种子有传毒能力,视寄主不同而有所差异,赤豆种子发病率仅1.6%,而豇豆种子发病率为17.2%。桃蚜、豆蚜、棉蚜及菜缢管蚜皆能传播此病毒。寄主范围为多种豆科作物,如豇豆、藊豆、大豆、蚕豆及芸豆、豌豆,黎科的菠菜,十字花科的桂竹香、紫罗栏等。除在桂竹香上生褪绿小点外,余均表现系统花叶症。但不侵染紫云英、绿豆、山扁豆、三叶草、苜蓿、黄瓜、南瓜、烟草、藜、千日红、苋及芹菜等。据此,作者等认为它不是黄瓜花叶病毒的株系,亦不同于日野的赤豆花叶病毒(豇豆花叶病毒的一个株系),与典型的长豇豆花叶病毒有较多的共同点,因此认为是长豇豆花叶病毒(AbMV)种羣中的一个新株系。
Red bean mosaic disease is very serious in Beijing, the diseased plants up to 10-40%. The isolates of diseased plants were connected to red bean seedlings by conventional juice method. The fresh green chlorotic spots or mottled mottled leaves showed mosaic and blistering, and the malformations of leaf malformation, leaf margin, Small and few. The same virus inoculated on cowpea (Vigna sinensis L.), and red bean symptoms no significant difference. The physical properties of this virus: lethal temperature 60-65 ℃ 10 minutes, dilution limit 1: 3000-1: 4000, survive in vitro only 24 hours. The diseased plants have the ability to infect the seed, depending on the host, the incidence of red bean seed only 1.6%, while the cowpea seed incidence was 17.2%. Myzus persicae, aphids, cotton aphids and aphids can transmit this virus. The host range for a variety of leguminous crops, such as cowpea, beans, soybeans, beans and kidney beans, peas, Ricacas spinach, cruciferous Guizhu Hong, Zi Luo bar. In addition to pupils in Guizhu Hong chlorotic green spots, I have shown that systemic mosaic disease. But do not invade the milk vetch, mung bean, mountain lentils, clover, alfalfa, cucumber, pumpkin, tobacco, quinoa, Amarantha, amaranth and celery. Accordingly, the author believes that it is not a cucumber mosaic virus strain, and is different from the Hedyotidum mosaic virus (a strain of cowpea mosaic virus) in Hino, and has more in common with the typical Asuka mosaic virus , It is considered to be a new strain of long cowpea mosaic virus (AbMV) population.