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.
Triticum aestivum L. · Bread wheat
Hodowla Roslin Smolice Sp.z o.o Grupa IHAR
Hordeum vulgare L. · Barley
Hodowla Roslin Smolice Sp.z o.o Grupa IHAR
Avena sativa L. · Oat
SZB POLSKA SP.Z O O. SP.K.
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Kultursaat e.V. für Züchtungsforschung und Kulturpflanzenerh
Rhododendron L. · Azalea
KARL GLASER
Solanum lycopersicum L. · Tomato
ZETA SEEDS S.L.
Vitis vinifera L. · Common grape vine
Petar Dimitrov, Yordan K. Ivanov, Kolyu I. Katerov, Ivan H. Dimitrov
Malus Mill. · Apple
RUTGERS FREDRIC HOUGH L.
Solanum lycopersicum L. · Tomato
Hristo Georgiev
Avena sativa L. · Oat
Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Silke TIPPMANN (DE)
Malus domestica (Suckow) Borkh. · Apple
Pepinieres et Roseraies Georges Delbard| FR
Vitis vinifera L. · Common grape vine
HÖHERE BUNDESLEHRANSTALT UND BUNDESAMT FÜR WEIN UND OBSTBAU
Vitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Solanum lycopersicum L. · Tomato
Zoldesegtermesztesi Kutato Intezet RT (HU)
Solanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Rhododendron L. · Azalea
KARL GLASER
Solanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
Prunus persica (L.) Batsch · Peach
Václav Malhaus (CZ)
Prunus salicina Lindl. · Japanese plum
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Vreugdenhil Breeding & Seeds B.V.