The Role of Infective Plant Debris, and its Concentration in Soil, in the Ecology of Tomato Mosaic Tobamovirus—a Non-vectored Plant Virus

In this work we studied tomato yellow mosaic geminivirus (ToYMV) symptoms and DNA presence in several species of Solanaceae: Lycopersicon cscutentum, Lycopersicon peruvianum. Lyciiim barbarum. Sicotiana henthamiana. Solanum tyeopcrsicoides. Solanum quiioense and Solanum rickii. After mechanical and insect transmission, in both greenhouse and open field, we found plants of L icium harbarum and Soianum tycopersicoides to be resistance to ToYMV. Polymerase chain reaction analysis showed that the resistant plants did not contain viral DNA.