Recovery from Grapevine Flavescence Dorée in Areas of High Infection Pressure

Agronomy

Chiara Roggia¹  Cristina Marzachì²  Sabrina Palmano²  Nicola Bodino²  Marika Rossi²  Luciana Galetto²  Davide Pacifico²  Domenico Bosco²  Matteo Ripamonti² 

[1] Enocontrol S.C.A.R.L, Corso Enotria 2/C, 12051 Alba (CN), Italy;Istituto per la Protezione Sostenibile delle Piante (IPSP), C.N.R. Strada delle Cacce, 73, 10135 Torino, Italy;

关键词: phytoplasma;    Vitis vinifera;    wine quality;    Barbera;    Chardonnay;    integrated pests and disease control;   

DOI  :  10.3390/agronomy10101479

来源: DOAJ

【 摘 要 】

Flavescence dorée (FD) is a quarantine grapevine disease caused by a phytoplasma transmitted by the leafhopper Scaphoideus titanus Ball. FD management relies on compulsory insecticide treatments, roguing of infected plants, and substitution with certified material. Some grapevine cultivars show a spontaneous remission of symptoms (recovery). To determine if recovery is a suitable strategy to co-exist with disease in areas of strong infestation, the qualitative aspects of grapes, musts, and wines obtained from recovered Barbera and Chardonnay grapevines were investigated in two productive vineyards. Following field observations, about 1500 plants in each vineyard were divided into healthy (asymptomatic and negative in phytoplasma molecular diagnosis) and recovered (asymptomatic the year of observation but infected the year before). Maturation curves and microvinification tests followed by oenological and sensory analyses showed that maturation trends of recovered grapes were in line with those from healthy plants and the final qualities of wines were comparable. The spread of FD has strongly increased in Piedmont (Italy) in recent decades. Management strategies to cope with the disease are necessary to preserve traditional wine production. Despite the yield from recovered grapevines is quantitatively lower than that from healthy ones, we showed here that the wine quality is, however, preserved.

【 授权许可】

Unknown