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花生斑驳病是我国北方花生普遍发生的病毒病害之一。病毒由种子带进田间,形成病苗,通过蚜虫传播,在干旱少雨和多蚜虫条件下造成严重流行。本地花生生长后期的发病率达80～100％,严重流行年份减产幅度超过20％。因此,搞清种子带毒率的影响因素,对于培育无病毒种子,提高花生的产量和品质,具有重要意义。 (一)种子带毒率的鉴定 1983和1984年,大豆在接种后7～10天幼叶上表现花叶症状,苋色藜的接种叶呈现3～5毫米的白色半透明斑,而菜豆(Topcrop)
Peanut mottle is one of the most common viral diseases in northern China. The virus is brought into the field by the seed, forming a disease vaccine, transmitted by aphids, causing severe epidemics under conditions of less drought and more aphids. The incidence of peanut growth in the late 80% to 100%, severe epidemic years more than 20% reduction in output. Therefore, it is of great significance to find out the influencing factors of seed-borne poisoning rate for cultivating virus-free seeds and improving the yield and quality of peanut. (A) identification of the rate of seed poisoning In 1983 and 1984, soybeans showed mosaic symptoms 7 to 10 days after inoculation on young leaves, and the inoculated leaves of amaranth showed a 3 to 5 mm white translucent spot, Topcrop)