Artificial inoculation technology of gray leaf spots of tomatoes and disease resistance material screening method

The invention discloses an artificial inoculation technology of gray leaf spots of tomatoes and a disease resistance material screening method. The technology comprises tomato gray leaf spot inoculation technology research and disease resistance evaluation of main cultivars and breeding test materials of tomatoes. A research result shows that a moist spraying inoculation method is the most propermethod of artificial inoculation, and is simple, feasible and obvious in anti-infection difference; the tomato seedlings at the age of seedling of 6-8 leaf stages are in the best inoculation period, the inoculation concentration is 5*104/ml and the anti-infection effects are the best after 48h of moisture preservation. According to the invention, by carrying out resistance identification and screening disease resistance varieties by use of the moisture spraying inoculation method on the main cultivars and breeding test materials of tomatoes, three disease resistance main cultivars are screenedout, five middle-resistan