In the bordering countries of France and former Yugoslavia damage following Phomopsis helianthi attacks has been reported to be as high as 50%. After the first report of the disease in Italy in 1987, it has been found only sporadically, with limited attacks on only a few plants. The fungal isolates found in some countries of Italy have been compared with isolates from southern France. A comparative examination of physiological and biological characteristics and of adaptation to several substrates and growth conditions has shown a great difference between the Italian isolates and the French ones. The morpho-physiological differences were correlated to a different virulence, higher in French isolates and lower in Italian ones; this seem to explain the limited diffusion of the disease in Italy.
Evidence of pathogenicity of Phomopsis helainthi strains of different origin
ZAZZERINI, Antonio;TOSI, Laura;
1996
Abstract
In the bordering countries of France and former Yugoslavia damage following Phomopsis helianthi attacks has been reported to be as high as 50%. After the first report of the disease in Italy in 1987, it has been found only sporadically, with limited attacks on only a few plants. The fungal isolates found in some countries of Italy have been compared with isolates from southern France. A comparative examination of physiological and biological characteristics and of adaptation to several substrates and growth conditions has shown a great difference between the Italian isolates and the French ones. The morpho-physiological differences were correlated to a different virulence, higher in French isolates and lower in Italian ones; this seem to explain the limited diffusion of the disease in Italy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
