Variety traits

Fruit acidity

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.

Sources10

Breakdown by crop

Grape acidity 1 160 Grape acidity 507 Acidity of apple fruit 202 Peach fruit acidity 116 Tomato Fruit Acidity 116 Blueberry fruit acidity 52 Acidity of sweet cherry fruit 32 Olive Fruit Acidity 32 Fruit Acidity — Garden Strawberry 32 Apricot fruit acidity 21 Lemon Fruit Acidity 20 Acidity of Mandarin Fruits 18 Fruit acidity — Sour cherry 17 Citrus fruit acidity 16 Orange Fruit Acidity 16 Blackberry Fruit Acidity 15 Plum fruit acidity 13 Fruit acidity — Japanese plum 13 Pear fruit acidity 12 Acidity of oat grains 9 Tomato Fruit Acidity 8 Acidity of Apple Fruit 7 Raspberry fruit acidity 7 Acidity of kiwifruit 6

Found in these crops

Grapevine 1 163 Common grape vine 507 Apple 505 Bigleaf hydrangea 301 Tomato 238 Peach 194 European pear 127 Sweet cherry 122 Garden strawberry 86 Highbush blueberry 77 Apricot 58 European plum 48

Varieties that feature this in their description

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.

BO 04047013

Active

Prunus persica (L.) Batsch · Peach

Stefano Foschi^^^Daniele Bassi

2 records

Carmen Pop

Terminated

Prunus armeniaca L. · Apricot

Giuseppe Battistini

2 records

Bellini

Active

Citrus clementina hort. ex Tanaka. x C. paradisi Macfad.

Giuseppe Russo^^^Marco Caruso^^^Paola Caruso^^^Concetta Licciardello^^^Maria Patrizia Russo

2 records

Caramba

Active

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

2 records

Bigful

Withdrawn

Punica granatum L. · Pomegranate

Pascual Brotóns Gallardo^^^Carmen Nieves Martínez Cano^^^Francisco Javier Vidal Balaguer

1 record

Bravor

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Flevo Plant Holding B.V.

1 record

A 2428T

Application submitted

Rubus L. subg. Rubus · Blackberry

John R Clark

1 record

Blink

Withdrawn

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Van Klaveren Plant B.V.

2 records

Artys

Active

Vitis vinifera L. · Common grape vine

Agri-Obtentions S.A., Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

1 record

ARDFORTY

Application submitted

Vitis vinifera L. · Common grape vine

Shachar Karniel

1 record

A 2524T

Withdrawn

Rubus L. subg. Rubus · Blackberry

John R Clark

1 record

Alabama

Active

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

2 records

Atanais

Active

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

2 records

AC 459 011

Active

Actinidia chinensis Planch. · Kiwifruit

RAFFAELE TESTOLIN|GUIDO CIPRIANI|GUGLIELMO COSTA

1 record

Asuka

Terminated

Gypsophila L. · Baby's breath

Miyoshi & Co.

1 record

Anakin

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

Algar 12

Withdrawn

Eriobotrya japonica (Thunb.) Lindl. · Loquat

Instituto Valenciano de Investigaciones Agrarias (IVIA), Cooperativa Agrícola de Callosa d'en Sarrià - Cooperativa Valenciana

1 record

Amarysola

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

AC 401 057

Active

Actinidia chinensis Planch. · Kiwifruit

RAFFAELE TESTOLIN|GUIDO CIPRIANI|GUGLIELMO COSTA

1 record

A 2454T

Application submitted

Rubus L. subg. Rubus · Blackberry

John R Clark

1 record

Krajan

Withdrawn

Hordeum vulgare L. · Barley

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

4 records

Jutrzenka

Withdrawn

Triticum aestivum L. · Bread wheat

Poznanska Hodowla Roslin Sp. z o.o

3 records

Sylvaner

Active

Vitis L. · Grapevine

3 records

Gamay noir

Active

Vitis L. · Grapevine

2 records

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.