Journal of Plant Pathology (2002) 84, p. 200 (Zaccardelli et al.)

M. Zaccardelli, M. Parisi and I. Giordano (2002)
Susceptibility of tomato genotypes to Pseudomonas syringae pv. tomato in the field conditions
Journal of Plant Pathology 84 (3), 200-200
IX Meeting, Italian Society for Plant Pathology
Abstract: Pseudomonas syringae pv. tomato (Pst) causes Bacterial speck of tomato. The damages concern quality of the fruits (necrotic spots on the skin) used as fresh or transformed as peeled tomatoes. Not all the genotypes of tomato are susceptible: in fact, resistant cultivars are available. In this work, the susceptibility of 12 different tomato genotypes to natural infections of Pst, was evaluated in the field. The phytopathometric analysis, performed on leaves collected 4 weeks after transplanting (about one week before bloom) inferred slight or not attack for 4 genotypes (S. Marzano 2, Ranco F1, Hypeel 244, Piccadilly F1) whereas for other 4 genotypes (Corbarino ISCI 05, Vesuviano, Faino F1 and Principe Borghese), the attack was intense (from 10 % to over 14 % of diseased leaf surface). At harvesting, the higher incidence and intensity of attack, was observed on the fruits of the genotypes Vesuviano and Faino F1. These genotypes were the most early and the most attacked before bloom. The genotypes that did not show damages on fruits were S. Marzano 2, Sorrento, Cuore di Bue and Ibrido Insalataro, slightly or meanly attacked before bloom and with mean-late or late cycle. The resistance of the early genotype Piccadilly F1 was very high.
Database assignments for author(s): Massimo Zaccardelli

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Pseudomonas syringae pv. tomato	Tomato (Solanum lycopersicum)	Italy
	Pseudomonas syringae