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.
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Berries Del Oeste S.L.
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Clause Tezier, FR
Solanum lycopersicum L. · Tomato
INCONNU (FR)
Solanum lycopersicum L. · Tomato
De Bolster B.V.
Solanum lycopersicum L. · Tomato
BURPEE EUROPE LIMITED
Malus domestica (Suckow) Borkh. · Apple
CHAILLEUX (FR)
Solanum lycopersicum L. · Tomato
Centre Tech. de Conservation des produits Agricoles (FR)/Institut National de la Recherche Agronomique (FR)
Hydrangea L. · Hydrangea
NIELS ARTS
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Solanum lycopersicum L. · Tomato
MERIDIEM SEEDS S.L.
Malus domestica (Suckow) Borkh. · Apple
Rubus L. subg. Rubus · Blackberry
Sadowniczy Zaklad Doswiadczalny Instytutu Ogrodnictwa Brzezna Sp z o.o.
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Association Fruits Oublies (FR)
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Vitis vinifera L. · Common grape vine
Reinhard Töpfer^^^Oliver Trapp^^^Rudolf Eibach
Vitis vinifera L. · Common grape vine
Institut Francais de la Vigne et du Vin
Citrus clementina hort. ex Tanaka · Clementine
Malus domestica (Suckow) Borkh. · Apple
Prunus avium (L.) L. · Sweet cherry
PETRE LUDOVICROMINGER EMIL
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Pyrus communis L. · European pear