italianoenglishfrançaisdeutschespańolportuguęs
Language
  • » Scientific abstract
  • » GTD - Effects of grapevine cultivar, rootstock and clone on esca disease

GTD - Effects of grapevine cultivar, rootstock and clone on esca disease

Murolo S. Romanazzi G. - Australasian Plant Pathology (2014), vol 43

Esca is one of the main causes of reduction of production, plant decline and death in vineyards of most viticultural areas of the World. We determined the foliar esca symptoms on a range of grapevine cultivars in three central-eastern Italian vineyards during summer 2008, characterized by conducive conditions for the disease. In vineyard AP1, the incidence of symptomatic plants was recorded for 67 Vitis vinifera cultivars. Among white-berried cultivars, Passerina, Sauvignon blanc, Manzoni bianco, and Riesling, had highest incidence of symptomatic plants (28-35 %), while cvs. Chiapparù, Grechetto, Perdea, Verdicchio, Fiano and Pinot blanc had lowest (0-5 %). Among red-berried cultivars, Rebo had highest incidence of symptomatic plants (>35 %), with lowest for cvs. Lacrima, Brugentile, Sirah, and Limberger (0 %), followed by Gallioppo, Merlot, and Nebbiolo (<5 %). However, mean values of symptomatic plants among red and white cultivars were similar. The six cultivars monitored in vineyard AP2 confirmed this cultivar susceptibility ranking. Furthermore, in vineyard AN1, incidence of esca symptoms on seven cultivars grafted onto different rootstock was recorded. Cvs. Fiano and Sauvignon grafted onto SO4 showed higher disease incidence than combinations with 1103P. This result can be ascribed to the higher drought resistance of 1103P as compared to SO4, supporting the hypothesis that esca symptoms occur mostly in stressed plants. Significant differences in the symptom expression were recorded just among clones of Sauvignon, while they were not found in Chardonnay, Riesling and Pinot blanc. Our data give useful information for growers in planning cultivar/rootstock combination choice for new vineyards, and can provide an idea of possible evolution of esca along time in an already established vineyard

(Vincenzo Mondello)
Published on: 19/07/2016
European logoThis project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement N°652601
copyrights Winetwork @2015
powered by Infonet Srl Piacenza
Privacy Policy
This website and its related third-party services make use of cookies necessary for the purposes described in the cookie policy. If you want to learn more about cookies or how to disable them (either totally or partially), please see the cookie policy. By closing this banner, scrolling through this page, clicking on a link or continuing navigation in any other way, you consent to the use of cookies.
More informationOK
- A +