Published on May 28, 2024
Drought tolerance of Chardonnay grafted on different rootstocks: a case study in Franciacorta
Davide Bianchi, a viticulture researcher at the University of Milan, presented new drought-resistant rootstocks with a case study applied to Chardonnay vineyards in Franciacorta, Italy.
In this study, the results show that different rootstock combinations have an impact on water stress tolerance and the chemical characteristics of the wine. Traditional rootstocks (11 103 P and S so4) and new rootstocks (M1 and M4) were evaluated. The 11 103 P and M4 rootstocks maintained higher levels of water potential. The 11 103 P and 4 rootstocks produced wines with higher alcohol content and lower acidity, while the M4 rootstock showed a higher accumulation of aromatic precursors. The 11 103 P and M4 rootstocks were associated with greater transpiration, while S so4 showed greater regulation of osmotic potential and higher accumulation of esters and aromatic norisoprenoids.
Key points
🌱 Rootstocks affect water stress tolerance and wine characteristics
🍇 Rootstocks 11 103 P and M4 maintained higher levels of water potential
🍷 Rootstocks 11 103 P and 4 produced wines with higher alcohol content and lower acidity
👃 M4 rootstocks showed a higher accumulation of aromatic precursors
💧 11 103 P and M4 rootstocks were associated with greater transpiration
🎯 S so4 rootstock showed high regulation of osmotic potential and high accumulation of aromatic esters and norisoprenoids
