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.

Koria

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Cornelis Pieter Eveleens

4 records

Milly

Active

Malus domestica (Suckow) Borkh. · Apple

Salvi Luigi

4 records

Loch Katrine

Application submitted

Rubus L. subg. Rubus · Blackberry

Sophia N. Jennings c/o James Hutton Limited

2 records

MAJA

Active

Berberis thunbergii DC. · Japanese barberry

Aleksander Walaszczyk

2 records

King David

Active

Mangifera indica L. · Mango

Yuval Cohen^^^Eli Tomer^^^Uri Lavi^^^David Saada

2 records

Honey Dawn

Active

Prunus salicina Lindl. · Japanese plum

Stargrow Group (Pty) Ltd.

3 records

Kolmadaru

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Peter Rudolf Kolster

2 records

Kolmagimar

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Peter Rudolf Kolster

2 records

Horzu

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Jungpflanzen Claus & Torsten Kühne GbR

2 records

Hokopinel

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kolster Peter Rudolf,Eveleens Cornelis Pieter

3 records

Grand Stone

Active

Scabiosa caucasica M. Bieb. · Pincushion Flower

van Steijn Peter|Voorhout, NL

2 records

Hachgold

Active

Rhododendron L. · Azalea

Holger Hachmann

2 records

FPW07

Active

Lycium barbarum L. · Goji berry

Wang Wencai

2 records

H220908

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

Hortmacante

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Horteve Breeding B.V.

2 records

Gemma

Active

Prunus armeniaca L. · Apricot

Daniele Bassi^^^Stefano Foschi

3 records

Hiriv

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Roy Robin van Dijk

2 records

Huakaifugui

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Yu Li Qian^^^Tao Hao^^^Li Xiao Li^^^Huo Xiu Li^^^Yang Yu Yong

2 records

Franconia

Active

Vitis L. · Grapevine

Peterson Kevin / Peterson Kyle

2 records

HBACURL

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

Drisblacktwentyfive

Active

Rubus L. subg. Rubus · Blackberry

MARK F. CRUSHA & JOHN FANGARY

2 records

H217902

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

H218918

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

GOLDEN 1895

Active

Malus domestica (Suckow) Borkh. · Apple

Johann Huber

3 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.