Variety traits
Fruit acidity is a biological trait of a variety that determines taste quality, suitability for processing, and resistance to spoilage. It is assessed via the total concentration of all acids contained in the fruit.
Mentioned in descriptions 10 508 varieties reference book.
Fruit acidity is a biochemical quality indicator reflecting the sugar-acid ratio, which shapes the taste of the produce. This parameter determines the suitability of fruits for fresh consumption or industrial processing and also influences storage life, as an increased acidity level inhibits the development of pathogenic microorganisms.
For objective evaluation, the titratable acidity index is used, representing the total concentration of free acids and their salts. In laboratory conditions, this parameter is determined by the titration method using alkaline solutions until a fixed pH level is reached. The measurement results are expressed in grams per 100 grams of product or as a percentage.
In official variety testing, acidity is evaluated as one of the key quality indicators, often in combination with sugar content via the sugar-acid ratio. The final values of the trait depend on the crop species, although they are also influenced by the maturity stage of the fruits, growing conditions, and the mineral nutrition regime of the plants.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Citrus sinensis (L.) Osbeck · Sweet orange
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Malus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
Citrus sinensis (L.) Osbeck · Sweet orange
Prunus persica (L.) Batsch · Peach
Arsene Maillard Laurence Maillard
Citrus sinensis (L.) Osbeck · Sweet orange
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Solanum lycopersicum L. · Tomato
F.CASAÑAS, J.CASALS, L.BOSCH
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Vitis vinifera L. · Common grape vine
Land Baden-Wurttemberg, Germany
Solanum lycopersicum L. · Tomato
TOMATECH R&D ISRAEL L.T.D.
Prunus persica (L.) Batsch · Peach
Rene Monteux-Caillet (FR)
Solanum lycopersicum L. · Tomato
Syngenta Crop Protection AG
Malus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Malus domestica (Suckow) Borkh. · Apple
SERIDA
Solanum lycopersicum L. · Tomato
TOMATECH R&D ISRAEL L.T.D.
Prunus persica (L.) Batsch · Peach
PSB produccion vegetal S.L. (ES)
Pyrus communis L. · European pear
Prunus persica (L.) Batsch · Peach
Arsene Maillard Laurence Maillard
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Berries Del Oeste S.L.
Rubus occidentalis L. · Black raspberry
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Vitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE-INRA
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Wezelenburg K.
Citrus reticulata Blanco · Mandarin orange
GIUSEPPE REFORGIATO/GIUSEPPE RUSSO/SANTO RECUPERO
Prunus persica (L.) Batsch · Peach
Euro Pepinieres SCEA (FR)/Arsene Maillard (FR)