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.
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
SANTHO BEHEER B.V.
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Vitis L. · Grapevine
Doc. Ing. Miloš Michlovský, CSc. (CZ)
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Malus domestica (Suckow) Borkh. · Apple
ROUX (FR)
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Golden West Seed Co.
Zea mays L. · Maize
Penka Hristova, Kiril Hristov, Marko Markov, Ivanka Ivanova, Lyuben Gerginov
Zea mays L. · Maize
Penka Hristova, Kiril Hristov, Petar Dimchovski, Ivanka Ivanova, Penka Presolska, Stefka Zaneva, Tsvetana Takova
Hordeum vulgare L. · Barley
Poznanska Hodowla Roslin Sp. z o.o
Zea mays L. · Maize
Penka Hristova, Kiril Hristov, Petar Dimchovski, Stefka Zaneva, Tsvetana Takova
Prunus persica (L.) Batsch · Peach
PERFIL'EVA ZOYa NIKOLAEVNA / LATSKO TAT'YaNA ANATOL'EVNA / SMYKOV ANATOLIJ VLADIMIROVICh / FEDOROVA OL'GA STEPANOVNA / MALOVIChKO SERGEJ MIHAJLOVICh
Solanum lycopersicum L. · Tomato
ReinSaat KG
Vitis L. · Grapevine
VOINOV YuRIJ VASIL'EVICh / LYSENKO ANATOLIJ DMITRIEVICh / SKRIPKIN NIKOLAJ SERGEEVICh / VORONOVA KIRA ANATOL'EVNA / RUBENIYa REVAZI KLEMENT'EVICh / KIRANOV ALEKSANDR ALEKSANDROVICh
Malus domestica (Suckow) Borkh. · Apple
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Malus Mill. · Apple
Uecker, William
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Prunus persica (L.) Batsch · Peach
Lowell Glen Bradford (US)
Prunus persica (L.) Batsch · Peach
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Solanum lycopersicum L. · Tomato
HAO-DEMETER Vine, Fruit Trees and Vegetable Research Institute
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Meinl Katrin|Dresden, DE
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
LAKELAND HORTICULTURAL SOCIETY
Solanum lycopersicum L. · Tomato
HEINZSEED