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.
Vitis vinifera L. · Common grape vine
Martinez Manuel Tornel,Espin Juan Carreno
Vaccinium corymbosum L. · Highbush blueberry
The New Zealand Institute for Plant and Food Research
Malus domestica (Suckow) Borkh. · Apple
Michelangelo Leis
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Suiker Marcel
Fragaria L. · Strawberry
Royce S. Bringhurst|Victor Voth
Vitis vinifera L. · Common grape vine
NO DECLARADOS
Vitis vinifera L. · Common grape vine
United States of America as represented by the Secretary of Agriculture
Prunus avium (L.) L. · Sweet cherry
Zaiger's Inc. Genetics
Vitis vinifera L. · Common grape vine
David W. Cain, PhD.
Linum usitatissimum L. · Common flax
University of Manitoba (CA)
Pyrus communis L. · European pear
Vitis L. · Grapevine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Malus domestica (Suckow) Borkh. · Apple
SNC Elaris| FR
x Triticosecale Wittm. ex A. Camus · Triticale
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Hordeum vulgare L. · Barley
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Prunus persica (L.) Batsch · Peach
United State Department of Agriculture - Georgie (US)
Secale cereale L. · Rye
Poznanska Hodowla Roslin Sp. z o.o
Hordeum vulgare L. · Barley
Poznanska Hodowla Roslin Sp. z o.o
Malus domestica (Suckow) Borkh. · Apple
TANNO| Sadao Tanno / TANBA| Jin Tanba / SATO| Hiroshi Sato / KAGAYA| Matuyori Kagaya / TAGUCHI| Tatuo Taguchi / NIIZUMA| Tanetugu Niizuma
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Vitis vinifera L. · Common grape vine
Gabriele Di Gaspero^^^Michele Morgante^^^Simone Diego Castellarin^^^Guido Cipriani^^^Enrico Peterlunger^^^Raffaele Testolin
Triticum aestivum L. · Bread wheat
Poznanska Hodowla Roslin Sp. z o.o
Prunus persica (L.) Batsch · Peach
Norman Glen Bradford (US)/Lowell Glen Bradford (US)