USE OF CULTURE FILTRATES OF PYRENOCHAETA LYCOPERSICI IN TESTS FOR SELECTING TOLERANT VARIETIES OF TOMATO
F. Fiume, G. Fiume
Pyrenochaeta lycopersici, the causal agent of corky root, is one the most important pathogens on tomato plants and other vegetable crops in protected and field crops all over the world. The present study was aimed at evaluating the effectiveness of an in vitro test in which culture filtrates of P. lycopersici and tomato seedlings were used for selecting tolerant plants. The method allowed assessment of plant response to the disease and quick screening for tolerance. The rapid appearance of symptoms on seedling rootlets suggests that P. lycopersici may release toxic compounds into the liquid medium during its growth.