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从大名红皮花皱叶植株上通过蚜虫分离出一个分离物,能侵染许多茄科植物,在直果蔓陀蘿上表现为明显的脉暗症状。经测定致死温点为55—56℃,稀释限点为200—300倍,适宜的酸碱度为pH6—9,在22℃下体外存活期6小时,在15—25℃下经过25天的自然干燥仍保有活力。抗药力极强,能抗85%酒精、50%硫酸铜液、19%甲醛液、2.5%单宁酸,而不失其致病力。桃蚜、棉蚜、玉米蚜、麦二义蚜、麦长鬚蚜都能传播此病毒。蚜虫在病株上吸食10分钟即能带毒,带毒的蚜虫在寄主植物上放饲10分钟以上即可传染,其传毒能力与虫口密度有密切关系,每次需有10头以上才能传染。本病毒在洋酸浆、直果蔓陀蘿、龙葵等指示植物上的病状与 PYV 所引起的症状有显著区别,对 PYV 的抗血清无明显的沉淀反应,在洋酸浆上与 PYV 之间的交互保护作用很小。
A isolate was isolated from the aphids on the ruddy-leaved plants of the rhabdaceae and was able to infect many solanaceous plants, manifesting as obvious venous darkness symptoms on the drupe. The measured lethal temperature is 55-56 ° C, the dilution limit is 200-300 times, suitable pH is pH 6-9, in vitro survival at 22 ° C for 6 hours, natural drying at 15-25 ° C for 25 days Still alive. Strong resistance to 85% alcohol, 50% copper sulfate solution, 19% formaldehyde solution, 2.5% tannic acid, without losing its virulence. Peach aphid, cotton aphid, corn aphid, wheat aphid, wheat aphid can transmit this virus. Aphids in the diseased plants to take 10 minutes that can be poisoned, poisonous aphids in the host plant on feeding more than 10 minutes can be transmitted, its transmission capacity and density of insects are closely related, each need to have more than 10 to infection . The virus in the foreign body paste, straight fruit Mandragorata, Solanum nigrum and other symptoms on the plant symptoms caused by PYV significant difference between the anti-PYV antiserum no significant precipitation reaction in the foreign pulp with PYV Interaction between the small role of protection.