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.

AVASA PRI43

Active

Citrus reticulata Blanco · Mandarin orange

IVIA/AVASA

2 records

AVASA-PRI 49

Active

Citrus reticulata Blanco · Mandarin orange

IVIA

1 record

Bacchus

Active

Vitis vinifera L. · Common grape vine

AKTIONSGEMEINSCHAFT| Aktionsgemeinschaft zur Erhaltung von Rebsorten e.V. im DLR Rheinhessen-Nahe-Hunsrueck

2 records

Aubin

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Aspiran blanc

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Aspiran noir

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Barlena

Terminated

Hordeum vulgare L. · Barley

WUSTRACK| Dr. Hans-Joachim Wustrack

2 records

AURIU DE STEFANESTI

Active

Vitis vinifera L. · Common grape vine

POPA CAMELIASMARANDA GHEORGHEBADITESCU MARGARETA

1 record

AUCE

Active

Malus Mill. · Apple

L.Ikase

1 record

Barbaroux

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Asteria

Active

Asimina triloba (L.) Dunal · Pawpaw

STANICA FLORINJERRY LEHMANTABACU FLORIN ANDREIILIESCU LAVINIA MIHAELA

2 records

Auriga

Terminated

Solanum lycopersicum L. var. lycopersicum · Tomato

STEIN DR. M.| Dr. M. Stein im Institut fuer Zuechtungsforschung

2 records

Arkansas Traveler

Terminated

Solanum lycopersicum L. · Tomato

Domaine Public (FR)

1 record

Aubun

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Araignan

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Arbane

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Ashira

Withdrawn

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Eyal Vardi

1 record

Altesse

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Aromatnyi

Active

Vitis vinifera L. · Common grape vine

Herus Liudmyla Vasylivna, Pis`menaia Larysa Mykhailivna, Bankovska Mariia Hryhorivna, Tulaieva Maiia Ivanivna, Chebanenko IEvheniia Pavlivna, Meleshko Larysa Fedorivna,

2 records

Alvarinho B

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

ALBOREA

Active

Citrus reticulata Blanco · Mandarin orange

VARIOS OBTENTORES

2 records

Anielka

Terminated

Callistephus chinensis (L.) Nees · China aster

PlantiCo Hodowla i Nasiennictwo Ogrodnicze Golebiew sp. z o.o.

1 record

Ada Kaleh

Active

Ficus carica L. · Common fig

STANICA FLORINCURICI NICOLAEPEEV OTIMAN PAULA DIANABUTCARU ANA CORNELIAMIHAI COSMIN ALEXANDRU

2 records

Amanda Lee

Terminated

Actinidia Lindl. · Actinidia

Piter Bohdan Chykaliuk

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.