virus (1) pathogen (1) necrosis (1) fruit (1) flow (1) disease (1) detection (1) Handling (1) Environmental conditions (1) Causes (1) Environmental conditions (1) Water (1) Viruses (1) Virus diseases (1) Vineyards (1) Transportation (1) Seasons (1) Reason (1) Plants (1) Phloem (1) Old age (1) Necrosis (1) Microorganisms (1) Manufacturers' agents (1) Growth (Plants) (1) Grapes (1) Fruit (1) Electron microscopy (1) Commission merchants (1) Change (1)