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.

Tenroy

Active

Malus domestica (Suckow) Borkh. · Apple

Ten Hove (NZ)

BE DE ES FR HU NL

19 records

Maypole

Active

Malus domestica (Suckow) Borkh. · Apple

THE KENT INCORPORATED SOCIETY

BE ES FR IE NL PL

16 records

Katinka

Active

Prunus domestica L. · European plum

Walter Hartmann c/o Universität Hohenheim

CZ DE HU NL PL SK

18 records

Ben Tirran

Active

Ribes nigrum L. · Blackcurrant

Scottish Crop Research Institute, GB

DE DK FR LT NL PL

19 records

Arabella

Active

Triticum aestivum L. · Bread wheat

Danko Hodowla Roslin Sp.z.o.o.

EE LT LV PL UA

16 records

Sabrina

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

PLANTAS DE NAVARRA, S.A.(PLANASA)

ES NL

16 records

Final 131

Active

Prunus avium (L.) L. · Sweet cherry

STOPPEL, Peter, DE

DE UA

12 records

Fengapi

Active

Malus domestica (Suckow) Borkh. · Apple

Reinhard Kaneppele

DE UA

13 records

Drisblueeleven

Active

Vaccinium corymbosum L. · Highbush blueberry

Jennifer K. Izzo, Arlen Draper, Brian K. Caster,

NL UA

13 records

PremA129

Active

Malus domestica (Suckow) Borkh. · Apple

White Allan

11 records

Nicored

Active

Malus domestica (Suckow) Borkh. · Apple

Zanetti Werner

12 records

Monalisa

Active

Malus domestica (Suckow) Borkh. · Apple

Frederico Dernadi / Anisio Pedro Camilo

12 records

Ridley 4514

Active

Vaccinium L. · Bilberry

RIDLEY WILLIAM BELL

11 records

Bogota

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Wassenaar, L.M.

DE DK FR HU NL PL +2

17 records

Sweet Charlie

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

DE ES FR NL PT

19 records

Duke

Active

Vaccinium corymbosum L. · Highbush blueberry

Szkola Glowna Gospodarstwa Wiejskiego

NL PL UA

17 records

Delkistar

Active

Malus domestica (Suckow) Borkh. · Apple

Pepinieres et Roseraies Georges Delbard| FR

ES FR

12 records

Lupita

Active

Rubus idaeus L. · Red raspberry

Plantas de Navarra, S.A.-PLANASA, Spain

11 records

Columbia Giant

Active

Rubus L. subg. Rubus · Blackberry

Finn Chad E

10 records

PremA34

Active

Malus domestica (Suckow) Borkh. · Apple

White Allan

10 records

Celina

Active

Pyrus communis L. · European pear

Stein Harald Hjeltnes Graminor AS

12 records

Cheri

Protection expired

Hordeum vulgare L. · Barley

BAYERISCHEN PFLANTZENZUCHT-

AT DE DK ES FR IT

11 records

SW Hebe

Active

Trifolium repens L. · White clover

Svalof Weibull AB

AT FI FR SE

12 records

Golden Parsi

Active

Malus domestica (Suckow) Borkh. · Apple

Thomas Braun, Egon Schmider

FR NL

10 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.