【摘要】 通过烟草丛顶病中间寄主、烟蚜传毒特性及重要物理性状的试验,得出烟草丛顶病毒的寄主范围是茄科植物;烟蚜的最短传毒时间为2min,最短获毒时间为1h,蚜虫的传毒持久期在9d以上,无翅蚜、有翅蚜均可传毒,新生胎蚜不传毒;该病毒的稀释限点为10-3,致死温度为70℃;烟草丛顶病毒可以通过汁液摩擦传播,但蚜虫取食汁液摩擦发病株后,不会将病毒传给健株。更多还原

【Abstract】 The experiment results of the host range,the transmission characteristics,the physical properties of tobacco bushy top virus showed that the hosts of tobacco bushy top virus(TBTV)was plant of Solanaceae.Minimum inoculation ac-cess period of the aphid(Myzus persicae)was2minutes.Minimum acquisition access period of the aphid was1h.The aphid retains ability to transmit the virus is over9days.Both the alatae and the apterous can transmit TBTV.The baby aphids just born cannot transmit TBTV.The dilution end point is10-3.The lethal temperature is70℃.Tobacco bushy top virus can be transmitted by the succus friction.the aphid after eating the plant infected by the succus friction,cannot transmit TBTV to the healthy plant.更多还原