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
Maillard Laurence / Maillard Arsene
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Prunus avium (L.) L. · Sweet cherry
National Agricultural Research and Innovation Centre (NARIC)
Lupinus albus L. · White lupin
Caussade Semences SA (FR)
Clematis L. · Clematis
van Zoest Jan
Cucumis melo L. · Melon
Enza Zaden Beheer B.V.
Malus domestica (Suckow) Borkh. · Apple
ZOUK bvba, BE3800 Sint-Truiden
Pyrus communis L. · European pear
Lorenzo Rivalta
Prunus salicina Lindl. · Japanese plum
Terry A. Bacon,Terrence J. Frett
Citrus L. · Citrus
The Regents of the University of California
Vitis vinifera L. · Common grape vine
Rumen Conev^^^Daryl Somers
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Kolk Bartholomeus Petrus Maria
Vaccinium corymbosum L. · Highbush blueberry
Paul M. Lyrene James W. Olmstead
hybrids between Vaccinium corymbosum L. and Vaccinium darrowii Camp
Mountain Blue Orchards Pty Ltd
Rubus L. subg. Rubus · Blackberry
Scott W Adams
Rubus L. subg. Rubus · Blackberry
John R. Clark c/o Hargreaves Plants Ltd
hybrids between Vaccinium corymbosum L. and Vaccinium darrowii Camp
Ridley Bell
hybrids between Vaccinium corymbosum L. and Vaccinium darrowii Camp
Ridley Bell
Citrus reticulata Blanco · Mandarin orange
Nir Carmi^^^Hanna Neuman-Leshem^^^Ahuva Frydman-Shani^^^Pinchas Spiegel-Roy^^^Aliza Vardi^^^Avraham Elhanati^^^Yosef Yaniv^^^Yeoshua Kanonich
Hydrangea arborescens L. · Smooth hydrangea
Thomas G. Ranney^^^Irene Palmer^^^Andra Nus^^^Nathan Lynch^^^Darren H. Touchell
Ananas comosus (L.) Merr. · Pineapple
Pedro Nahoum
Malus domestica (Suckow) Borkh. · Apple
RESPUBLIKANSKOE NAUCHNO-PROIZVODSTVENNOE DOCHERNEE UNITARNOE PREDPRITIE «INSTITUT PLODOVODSTVA»
Pyrus communis L. · European pear
Graminor AS, N-2322 Ridabu
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Toyokazu Ichie