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.
Vaccinium corymbosum L. · Highbush blueberry
Narandra Patel^^^Jessica Scalzo
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Shouji SAKAMOTO (JP)
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Avena sativa L. · Oat
Saatzucht Engelen Büchling
Vitis vinifera L. · Common grape vine
Instituto Sperimentale per la Frutticoltura
Solanum lycopersicum L. · Tomato
keine Angabe
Solanum lycopersicum L. · Tomato
Pieterpik B.V.
Solanum lycopersicum L. · Tomato
MORAVOSEED CZ A.S.
Pyrus communis L. · European pear
SEMPRA PRAHA A S
Punica granatum L. · Pomegranate
Julián Bartual Martos^^^Guillermo Valdés Quiles
Hordeum vulgare L. · Barley
Hodowla Roslin Smolice Sp.z o.o Grupa IHAR
Solanum lycopersicum L. · Tomato
SEMILLAS FITO, S.A.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
van Straaten V.O.F.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
SANTHO BEHEER B.V.
Prunus persica (L.) Batsch · Peach
Floyd Zaiger (US)
Citrus sinensis (L.) Osbeck · Sweet orange
Prunus domestica L. · European plum
Michael Neumüller
Secale cereale L. · Rye
Pennington Seeds Inc
Hordeum vulgare L. · Barley
Boreal Plant Breeding
Trifolium subterraneum L. · Subterranean clover
NEW SOUTH WALES, DEP.AGR.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
OWENS A.
Prunus persica (L.) Batsch · Peach
Laurence Mallard, Agro Selections Fruits SAS
Prunus persica (L.) Batsch · Peach
Norman Glen Bradford (US)/Lowell Glen Bradford (US)