Impact of grafting type on Esca foliar symptoms
Langue
en
Article de revue
Ce document a été publié dans
OENO One. 2017, vol. 51, n° 2-3, p. 221-230
International Viticulture and Enology Society (IVES)
Date de soutenance
2017Résumé en anglais
Aim: The aim of the survey was to investigate if the grafting type influences the foliar expression of Esca during summer. [br/] Methods and Results: Observations were conducted on plots distributed in two French winegrowing ...Lire la suite >
Aim: The aim of the survey was to investigate if the grafting type influences the foliar expression of Esca during summer. [br/] Methods and Results: Observations were conducted on plots distributed in two French winegrowing regions (two different climatic regions) with two varieties (Cabernet-Sauvignon in the Bordeaux region and Mourvedre in Provence). Three grafting types were compared: Omega graft, Whip and Tongue graft, and full cleft graft. For both varieties, we found a significant effect of the type of grafting on the foliar development of Esca symptoms. Full cleft grafted plots showed a significantly lower percentage of Esca foliar symptoms than the other two modalities, which were not significantly different from one another. Concerning Omega grafted plots, a significant difference in the rate of Esca foliar symptoms was highlighted compared to full cleft grafted plots, with a higher rate on Omega grafted plots, but these plots were also younger. [br/] Conclusions: The study established, for the first time, the difference between full cleft field grafted plots and Omega and Whip and Tongue grafted plots, revealing a higher incidence of Esca on the latter types of grafting. [br/] Significance and impact of the study: The spread of mechanical graft could be one of the factors explaining the increasing incidence of Esca in vineyard.< Réduire
Mots clés
Esca de la vigne
Comportement de porte greffe
Surface foliaire
Provence
Bordelais
Mots clés en anglais
Esca
Foliar Symptoms
Graft Type
Nurseries
Quality Of Planting Material
Origine
Importé de halUnités de recherche