Indagini sull' epidemiologia del virus dell' accartocciamento fogliare giallo del pomodoro (TYLCV) in Sicilia.
1994
Davino M. | D'Urso F. | Areddia R. | Carbone M. | Mauromicale G.
Transmission tests of tomato yellow leaf curl virus (TYLCV) to jimsonweed and tomato plants, assays on wild and cultivated species and on tomato seeds and plantlets were carried out in the Ragusa area in order to ascertain the possible natural hosts and the transmissibility of this virus. These tests demonstrated that under favourable environmental conditions, TYLCV is easily transmitted to jimsonweed and tomato plants by its vector Bemisia tabaci (Gennadius). Assays using molecular hybridization with a specific TYLCV probe were carried out on 55 wild and cultivated species collected in several areas of Ragusa, where the TYLCV incidence is very high. It was found that black nightstrade, jimsonweed and Euphorbia sp. are natural hosts of the virus. In August 1991, 83% of black nightstrade showed that TYLCV is systemic in this species. It was determined by means of molecular hybridization assays on seeds produced by infected tomato plants and on plantlets obtained from these seeds that TYLCV is not transmitted through these organs.
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