Journal of Plant Pathology (2004) 86, p. 338b (Zaccardelli et al.)

M. Zaccardelli, G. Parrella, R. Riccardi, P. Spigno and I. Giordano (2004)
Field evaluation of viral damage on sixteen genotypes of canning tomato
Journal of Plant Pathology 86 (4), 338-338
XI Meeting, Italian Society for Plant Pathology, Milan, 29/9 - 1/10, 2004 (poster)
Abstract: Tomato cultivation is severely impaired by virus infections. Cucumber mosaic virus (CMV) is the most widespread virus, especially in southern Italy, followed by Tomato spotted wilt virus (TSWV), which is responsible for heavy crop losses. Control of these viruses is possible by using resistant tomato genotypes. In 2003, the incidence of viral damage was evaluated in sixteen genotypes of field-grown canning tomatoes in the Sele Valley (southern Italy). The presence of CMV, TSWV, Tomato mosaic virus (ToMV), Alfalfa mosaic virus (AMV), and Potato virus Y (PVY) was evaluated by ELISA in leaf samples collected three times during the vegetative cycle of tomato. CMV was detected in all genotypes, the same as TSWV with the exception of the TSWV-resistant genotypes Messapico (peeled tomato) and York (concentrated tomato). The other viruses were rare or were not detected. At harvesting, the incidence of viral damage to the fruits was about 38% for cvs Pull and Galeon and about 30% for cvs Alexa, Genius and Ulisse. The lowest damage to fruits was observed in cv Glamour (about 5%). Hypersensitive reactions were observed in the fruits of cvs Messapico and York (lower 1%). These results indicate that the two TSWV-resistant tomato genotypes are fit for cultivation under conditions of natural TSWV inoculum. Evaluation of fifteen new TSWV resistant tomato genotypes under field condition is in progress.
Database assignments for author(s): Massimo Zaccardelli, Giuseppe Parrella

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cucumber mosaic virus	Tomato (Solanum lycopersicum)	Italy
	Orthotospovirus tomatomaculae	Tomato (Solanum lycopersicum)	Italy