Adaptation of Syrah wine grape cultivar to changing climatic conditions of the Bekaa valley, Lebanon
Laen...
Kuupäev
2023
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Climatic factors play a key role in determining the suitability of a given region for
specific cultivars and wine types and the responses of individual grapevine cultivars to climate
are of utmost importance for activity planning and decision making in viticulture. The study
investigated the effect of climate conditions from 2006 till 2018 on the performance of cv. Syrah
cultivated in two vineyards in Lebanon; Kanafar (at 1,020 m.a.s.l) and Mansoura (at 850 m.a.s.l).
Cluster analysis based on climate indicators divided years into two clusters; in Kanafar (cluster 1:
2006–2015, cluster 2: 2016–2018) and in Mansoura (cluster 1: 2006 to 2008, cluster 2: 2009 to
2018). Solar radiation (May-June) and average wind speed (July-August-September) were the
most influential predictors in Kanafar and Mansoura, respectively. In Kanafar, average yield and
weight of 200 berries decreased by 21% and 22.7 g respectively in cluster 2, but in Mansoura
only average yield increased by 3.7% in cluster 2. Total soluble solids and titratable acidity were
not significantly affected by the shift in climate conditions at both vineyards, however total
anthocyanin potential was significantly lower in Kanafar (by 114.2 mg kg-1
) and higher in
Mansoura (by 353.4 mg kg-1
) in cluster 2. Total polyphenolic richness was only affected in
Kanafar (reduction by 42 mg GAE g-1 in cluster 2). Syrah performance was more negatively
affected by the changing climate conditions at Kanafar rather than Mansoura vineyards and it
seems to better adapt to climate conditions of Mansoura overcoming the shift in climate that
occurred after 2008 there.
Kirjeldus
Received: February 7th, 2023 ; Accepted: October 25th, 2023 ; Published: November 6th, 2023 ;
Correspondence: youssef.sassine@ul.edu.lb
Märksõnad
climate change, winegrapes, production, quality, years, articles