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
Laurence Maillard, Arsene Maillard
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Glen Black
Rubus L. subg. Rubus · Blackberry
Gavin R. Sills^^^Andrea M. Pabon
Vitis vinifera L. · Common grape vine
Pepiniers Viticoles Bourget et Fils
Malus Mill. · Apple
VERHAEGH JACOBUS JOHANNES
Solanum lycopersicum L. · Tomato
Dr. Horneburg Bernd, Georg-August-Universität Göttingen
Prunus persica (L.) Batsch · Peach
Arsene Maillard Laurence Maillard
Solanum lycopersicum L. · Tomato
HM.Clause S.A.S.
Vitis vinifera L. · Common grape vine
Yordan K. Ivanov, Vasil Y. Valchev, Georgi S. Petkov, Boris A. Muzyichenko (RU), Arif M. Aliev (RU), Ivan A. Kostrikin (RU)
Citrus sinensis (L.) Osbeck · Sweet orange
Nicholson, Donald John
Rubus L. · Blackberry
Prunus persica (L.) Batsch · Peach
Pyrus communis L. · European pear
Pepinieres et Roseraies Georges Delbard| FR
Solanum lycopersicum L. · Tomato
Clause Semences SA (FR)
Solanum lycopersicum L. · Tomato
BURPEE NL B.V.
Vitis L. · Grapevine
GOLODRIGA PAVEL YaKOVLEVICh / USATOV VLADIMIR TROFIMOVICh / MAL'ChIKOV YuRIJ ALEKSANDROVICh / KIREEVA LYuDMILA KONSTANTINOVNA / DUBOVENKO NEONILA PETROVNA / RAZUVAEV NIKOLAJ IVANOVICh
Capsicum annuum L. · Bell pepper
Graines Voltz (FR)
Malus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
Malus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
Malus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
Malus domestica (Suckow) Borkh. · Apple
SNC Elaris (FR)/Institut National de la Recherche Agronomique (FR)
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Dr. Horneburg Bernd, Georg-August-Universität Göttingen