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
Stichting Dienst Landbouwkundig Onderzoek, Praktijkonderzoek Plant & Omgeving/Plant Research International
Vitis vinifera L. · Common grape vine
Terry A Bacon
Vaccinium corymbosum L. · Highbush blueberry
Driscoll's, Inc / Driscoll's, Inc.
Vitis vinifera L. · Common grape vine
Vivai Cooperativi Rauscedo, I
Hybrids between Pyrus communis, Pyrus pyrifolia and Pyrus x bretschneideri
White Allan G
Vaccinium corymbosum L. · Highbush blueberry
PAUL M. LYRENE
Malus domestica (Suckow) Borkh. · Apple
VAN LEUVEN MYLES
Prunus avium (L.) L. · Sweet cherry
Paul Argot (FR)
Vaccinium corymbosum L. · Highbush blueberry
The New Zealand Institute for Plant and Food Research Limited, The New Zealand Institute for Plant and Food Research Limited
Prunus avium (L.) L. · Sweet cherry
Troy M. Toftness
Calibrachoa Cerv. · Calibrachoa
Yasuyuki Murakami
Vitis vinifera L. · Common grape vine
Terry A. Bacon,Terrence J. Frett
Rubus idaeus L. · Red raspberry
The James Hutton Institute, Dundee, DD2 5DA
Vitis vinifera L. · Common grape vine
Terry A Bacon
Prunus armeniaca L. · Apricot
David W. Cain,Terry A. Bacon,Bruce D. Mowrey
Malus domestica (Suckow) Borkh. · Apple
JOY McKENZIE
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Fresh Forward Holding B.V., 6851 ET Huissen
Ornithopus sativus Brot. · Serradella
Nutt Bradley
Vitis vinifera L. · Common grape vine
NO DECLARADOS
Avena sativa L. · Oat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
STICHTING| Stichting Dienst Landbouwkundig Onderzoek
Triticum aestivum L. · Bread wheat
Asur Plant Breeding SAS Pôle Végétal de la Plaine d'Estrées
Linum usitatissimum L. · Common flax
RUTKOWSKA| E. Rutkowska c/o Zaklad Doswiadczalny Petkowo / STRYCHARZ| L. Strycharz c/o Zaklad Doswiadczalny Petkowo / GRABOWSKA| L. Grabowska c/o Zaklad Doswiadczalny Petkowo / KRYNSKI| J. Krynski c/o Zaklad Doswiadczalny Petkowo / LEHMANN| K. Lehmann c/o
Prunus persica (L.) Batsch · Peach
RenÚ MONTEUX-CAILLET (FR)