Variety traits
Vitis L.
Grape acidity is determined by the content of tartaric and malic acids, which is critically important for wine quality and table grape characteristics. Values are measured via titratable acidity and pH levels, depending significantly on climatic conditions and the degree of berry maturity.
In the reference 1 160 varieties crop Grapevine, where this is mentioned in the description.
In viticulture, a distinction is made between titratable acidity, expressed in g/L and characterizing the sum of organic acids, and active acidity (pH). A pH range from 3.0 to 4.0 is considered optimal for wine stability, while values above 3.3 for white varieties and 3.5 for red varieties require special technological control.
Acid dynamics depend directly on external conditions: in hot climates, temperatures above 30°C accelerate the degradation of malic acid, and temperatures above 35°C accelerate that of tartaric acid. In cooler regions, grapes are prone to accumulating excessive acidity, which requires careful monitoring to determine harvest dates.
General information about the subject — on the page Fruit acidity.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Vitis L. · Grapevine
GUIDO CIPRIANI/GABRIELE DI GASPERO/MICHELE MORGANTE/ENRICO PETERLUNGER/RAFFAELE TESTOLIN/ SIMONE DIEGO CASTELLARIN
Vitis L. · Grapevine
Valentin Blattner
Vitis L. · Grapevine
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)
Vitis L. · Grapevine
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)
Vitis L. · Grapevine
GOLODRIGA PAVEL YaKOVLEVICh / KOSTIK MARIYa ANTONOVNA / YuRChENKO VLADIMIR YuR'EVICh / GALENKO VASILIJ VIKTOROVICh / DRANOVSKIJ VIKTOR ALEKSANDROVICh / YuRChENKO OLEG VLADIMIROVICh
Vitis L. · Grapevine
REINHARD ToPFER / RUDOLF EIBACH
Vitis L. · Grapevine
Juan Carreño Manuel Tornel
Vitis L. · Grapevine
MIHU GHICABOSOI IONICAPUSCALAU MARIOARA
Vitis L. · Grapevine
JKI - Julius Kuhn Institut (DE)/Institut National de la Recherche Agronomique (FR)
Vitis L. · Grapevine
V. KRAUS PROF.
Vitis L. · Grapevine
Doc. Ing. Miloš Michlovský, CSc. (CZ)
Vitis L. · Grapevine
VOINOV YuRIJ VASIL'EVICh / LYSENKO ANATOLIJ DMITRIEVICh / SKRIPKIN NIKOLAJ SERGEEVICh / VORONOVA KIRA ANATOL'EVNA / RUBENIYa REVAZI KLEMENT'EVICh / KIRANOV ALEKSANDR ALEKSANDROVICh
Vitis L. · Grapevine
Hajdu Edit / Meszaros Istvanne / Kovacs Zoltanne / Talas Katalin / Visontai Erzsebet
Vitis L. · Grapevine
VOINOV YuRIJ VASIL'EVICh / LYSENKO ANATOLIJ DMITRIEVICh / SKRIPKIN NIKOLAJ SERGEEVICh / VORONOVA KIRA ANATOL'EVNA / RUBENIYa REVAZI KLEMENT'EVICh / KIRANOV ALEKSANDR ALEKSANDROVICh
Vitis L. · Grapevine
GOLODRIGA PAVEL YaKOVLEVICh / USATOV VLADIMIR TROFIMOVICh / MAL'ChIKOV YuRIJ ALEKSANDROVICh / KIREEVA LYuDMILA KONSTANTINOVNA / DUBOVENKO NEONILA PETROVNA / RAZUVAEV NIKOLAJ IVANOVICh
Vitis L. · Grapevine
Lubomír Glos (CZ)
Vitis L. · Grapevine
INCONNU (FR)
Vitis L. · Grapevine
Vitis L. · Grapevine
Šlechtitelská stanice vinařská Velké Pavlovice, a.s. (CZ)
Vitis L. · Grapevine
INCONNU (FR)
Vitis L. · Grapevine
INCONNU (FR)
Vitis L. · Grapevine
ELLIS PHILLIPUS JOHANNES LANGENHOVEN^^^EVANS EDWARD PETER
Vitis L. · Grapevine
Peterson Kevin / Peterson Kyle
Vitis L. · Grapevine
ALIEV ARIF MUZAFAROVICh / KOSTRIKIN IVAN ALEKSANDROVICh / IVANOV JORDAN / VYLChEV VASIL / MUZYChENKO BORIS ALEKSANDROVICh