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.

Carcaghjolu biancu

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Cara Cara Navel

Active

Citrus sinensis (L.) Osbeck · Sweet orange

INCONNU (FR)

1 record

Boiaryn

Terminated

Sesamum indicum L. · Sesame

Chekhov Anatolii Vasyl`ovych, Nikonova Valentyna Mykolaivna, Lohvyneno Oksana Volodymirivna, Aks`onov Ihor Viktorovych,

2 records

Bouquettraube

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Bolestraszycki

Active

Cornus mas L. · Cornelian cherry

Arboretum i Zakład Fizjografii w Bolestraszycach

1 record

Bolero

Active

Vitis vinifera L. · Common grape vine

Hochschule Geisenheim University Institut für Pflanzenzüchtung Herrn Prof. Dr. Ernst Rühl

2 records

Bogota MAR

Terminated

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Szkółka Markiewicz Agnieszka Markiewicz-Januszewska

1 record

Blanc Dame

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Bonne Vituaigne

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Bouquet 3196

Active

Vitis L. · Grapevine

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

1 record

Cacaboue

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Bianca ISK

Withdrawn

Vitis L. · Grapevine

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Cabernet Blanc

Active

Vitis vinifera L. · Common grape vine

Valentin Blattner-Haefeli und Frau Silvia

2 records

Bigarreau Sue

Terminated

Prunus avium (L.) L. · Sweet cherry

Agriculture and Agri-Food Canada| CA

1 record

Biancu Gentile

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Braucol

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Bluetta ISK

Terminated

Vaccinium corymbosum L. · Highbush blueberry

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Brzoskwiniowa ISK

Terminated

Prunus domestica L. · European plum

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Beaugaray N

Active

Vitis vinifera L. · Common grape vine

Institut National de la Recherche Agronomique (FR)/Sicarex Beaujolais (FR)

1 record

Blyan

Application submitted

Vitis vinifera L. · Common grape vine

Dimitar Babrikov, Venelin Roychev, Agricultural University - Plovdiv (BG)

1 record

Bertina

Terminated

Rhododendron simsii Planch. · Indica azalea

STAHNKE| Otto Stahnke (Gartenbaubetrieb)

1 record

Ben Nevis WIL

Terminated

Ribes nigrum L. · Blackcurrant

Gospodarstwo Ogrodnicze Jerzy Wilczewski

1 record

Bachet

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Blanka ISK

Withdrawn

Ribes rubrum L. · Redcurrant

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

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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.