Resumen de Evidence of non-seed transmission of viruses in grapevine breeding material
Marica Gasparro, Angelo R. Caputo, Lucia R Forleo, Rocco Perniola, Vittorio Alba, Rosa Anna Milella, Donato Antonacci
The vertical transmission of viruses is an important phenomenon affecting a wide range of viruses and host plants. Nevertheless, the presence of virus in a seed does not always lead to seedling infection. In grapevine, seed transmission has been reported for many nepoviruses, but little is known about Leafroll, Rugose wood complex and Fleck diseases. Thus, the aim of this study is to monitor the virological condition of seedlings obtained by crosses between infected parents, analyzing the sanitary status of seedlings after the transfer in experimental fields. It was observed that, although the viral state of parents was quite compromised, viruses were not detected in any of the 150 progeny plants, demonstrating that the main grapevine viruses are at low risk for seed transmission.
