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.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Productions Challet Herault SAS (FR)
Citrus deliciosa Ten. · Mediterranean mandarin
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Malus pumila L. Mill. · Paradise apple
Station de Recherche York (US)
Prunus salicina Lindl. · Japanese plum
Vitis L. · Grapevine
Lubomír Glos (CZ)
Vitis vinifera L. · Common grape vine
Reinhard Töpfer^^^Rudolf Eibach^^^Oliver Trapp
Rubus idaeus L. · Red raspberry
Sjöstedt, Bo
Malus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Pieterpik B.V.
Solanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
Solanum lycopersicum L. · Tomato
ReinSaat KG
Citrus sinensis (L.) Osbeck · Sweet orange
VICENTE BARBER PEREZ
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
SERIDA
Prunus armeniaca L. · Apricot
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Prunus armeniaca L. · Apricot
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Citrus clementina hort. ex Tanaka · Clementine
M.FABRA/IVIA/INIA
Malus domestica (Suckow) Borkh. · Apple
Michael Neumüller
Solanum lycopersicum L. · Tomato
Monsanto Vegetable IP Management B.V.
Rosa L. · Rose
Meilland, Francis|France
Vitis L. · Grapevine
INCONNU (FR)
Vitis L. · Grapevine
Hydrangea L. · Hydrangea
Information regarding the breeder received in the contribution to CPVO :Lambert C. et al.
Vitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR