Bulletin of Insectology (2007) 60, 235-236

C. Bellomo, L. Carraro, P. Ermacora, F. Pavan, R. Osler, C. Frausin and G. Governatori (2007)
Recovery phenomena in grapevines affected by grapevine yellows in Friuli Venezia Giulia
Bulletin of Insectology 60 (2), 235-236
First International Phytoplasmologist Working Group Meeting (IPWG), Bologna (Italy) November 12-15, 2007
Abstract: During 2004-2006 research was carried out in 19 vineyards to assess the occurrence of recovery in plants affected by grapevine yellows (GYs, i.e. 'flavescence dorée' and 'bois noir'). Irrespective of GY type, 50% of symptomatic grapevines showed recovery the following year and 70% after two years. In about one third of the grapevines which had recovered symptoms reappeared the following year. Grapevines cv. Chardonnay were more susceptible to and more seriously affected by GYs than those of cv. Merlot and this was also associated with a lower propensity for recovery. Varietal differences in recovery capability are important for establishing GY control strategies.
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Database assignments for author(s): Francesco Pavan, Luigi Carraro

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phytoplasma vitis	Grapevine (Vitis)	Italy
	Phytoplasma solani	Grapevine (Vitis)	Italy