【摘要】 1960—1964年我们对广州地区豌豆黄顶病的病原进行了初步鉴定。该病毒不能由汁液摩擦和土壤传递,传病介体为豆蚜(Aphis laburni Kaltanbach),一个豆蚜的传病率可高达66—68％;2—10个的相差不多,都高达80—100％。最短获毒饲育时间为3小时,病毒在虫体内潜育期最少7小时,最短传毒饲育时间少于15分钟,保毒虫能终生传病。可以认为该病毒是一种持久性病毒。1981年我们进行了病毒的电镜观察,病毒粒子线状,大小为12×416-496nm。 此病毒除侵染豌豆外,还可侵染蚕豆、菜豆和紫云英,不能侵染苜蓿、三叶草、豇豆、红豆、眉豆、大豆、花生、赤小豆、绿豆、扁豆、苕子等。在豌豆上,病害潜育期5—20天。 根据文献上的有关报道,我们认为本病毒是一种新报道的病毒,暂命名为豌豆黄顶病毒。至于此病毒在病毒分类上的归属问题,则还有待于进一步研究解决。更多还原

【Abstract】 The pea yellow-top is the major virus disease of peas grown in the winter season from November to January in Guangzhou district, causing some damage from time to time in some localities. The major symptoms of the disease consisted of shoot yellowing, stunting and sterility, and the leaves of the yellow shoots becoming small in size with or with out slight crinkling.The disease and its causal virus were studied in 1960-1964 and again in 1981. It was found that the virus particles were in the shape of flexous rods,measuring 12×416-466nm.The virus could not be transmitted by mechanical inoculation method nor by soil inoculation method. Aphis lavurni Kaltanbach was found to be the vector while Myzus pericae Sulty was not. A. Isburni transmitted the virus in a persistent (circu-lative ) manner. The shortest aquiring period was 3 hours. The incubation period in the vector was 7-24 hours. The infective aphid was shown to be able to transmit the virus all through its life until its death. The host range of the virus was found to be limited to peas and broad beans, a variety of bean and a variety of Astragalus sinicus.The following plant species were found to be immume to the disease: alfalfa, clover, common vetch, soybean, peanut, mung bean, hyacinth dolichos, Adsuki bean, Azuki bean, and catjang cowpea.Based on the above preliminary results it is suggested that the pea yellow-top occurring in Guangzhou district is a newly recorded virus disease which is different from all the pea and broad bean virus diseases reported elsewhere in the world.更多还原