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.
Prunus persica (L.) Batsch · Peach
Rene Monteux-Caillet (FR)
Malus domestica (Suckow) Borkh. · Apple
Ryszard Nowakowski
Solanum lycopersicum L. · Tomato
Nunhems B.V.
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Peter Stoppel
Vitis L. · Grapevine
GUIDO CIPRIANI/GABRIELE DI GASPERO/MICHELE MORGANTE/ENRICO PETERLUNGER/RAFFAELE TESTOLIN/ SIMONE DIEGO CASTELLARIN
Capsicum annuum L. · Bell pepper
NOVARTIS SEEDS B.V.
Malus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
Avena sativa L. · Oat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Pyrus communis L. · European pear
Solanum lycopersicum L. · Tomato
PlantiCo Hodowla i Nasiennictwo Ogrodnicze Golebiew sp. z o.o.
Ribes uva-crispa L. · Gooseberry
Vitis vinifera L. · Common grape vine
Prof. Dr. H. Becker
Solanum lycopersicum L. · Tomato
NUNZA BV
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
ROYAL SLUIS
Malus Mill. · Apple
PER-OLOF BERGENDAL
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
REINHARDT| G. Reinhardt / SCHMITZ-HUeBSCH| G. Schmitz-Huebsch
Prunus armeniaca L. · Apricot
Pepinieres et Roseraies Georges Delbard| FR
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Nicola D'Ercole (IT)/Walther FAEDI (IT)/Pasquale ROSATI (IT)
Hordeum vulgare L. · Barley
SAN MIGUEL
Pyrus communis L. · European pear
Citrus maxima (Burm.) Merr. · Pomelo
Soost Robert K. (US)/Cameron James W. (US)
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
PLANTAS DE NAVARRA, S.A.