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.

Nefertiti

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

Marcelino

Application submitted

Prunus armeniaca L. · Apricot

PSB Producción Vegetal S.L

1 record

Najasia

Active

Prunus persica (L.) Batsch · Peach

AC Fruit - Association Creation Fruitiere S.A.S

1 record

Lilaro

Active

Vitis vinifera L. · Common grape vine

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

1 record

Megacrisp

Withdrawn

Vaccinium corymbosum L. · Highbush blueberry

Rolfe Nominees Pty Ltd

1 record

Maula N

Active

Vitis vinifera L. · Common grape vine

Donato Antonacci

1 record

Luminan

Active

hybrids between Vitis rotundifolia Michx. and Vitis vinifera L.

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Bureau National Interprofessionnel du Cognac (BNIC)

1 record

Ilvoclou

Active

hybrids between Hydrangea macrophylla (Thunb.) Ser. and Hydrangea serrata (Thunb.) Ser.

Instituut voor Landbouw- en Visserijonderzoek (ILVO) Eenheid Plant

1 record

Kamosere Gokigenyo

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Toyokazu Ichie

1 record

Kalista

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

HSPS21

Application submitted

Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven

Plant Select N.V.

1 record

HORE9311

Application submitted

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Lendert De Vos

1 record

GARIOLIN-A

Active

Prunus avium (L.) L. · Sweet cherry

1 record

Hilpase

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

1 record

Gala Royal Beaut Z-select

Withdrawn

Malus domestica (Suckow) Borkh. · Apple

Zouk B.V.

1 record

Habella

Terminated

Prunus domestica L. · European plum

DR WALTER HARTMANN

1 record

Febe

Active

Prunus persica (L.) Batsch · Peach

Geoplant Vivai S.r.l. Società Agricola

2 records

HSPS22

Application submitted

Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven

Plant Select N.V.

1 record

Galaxy

Withdrawn

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kwekerij Vicini B.V.

1 record

Hokomarore

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Horteve Breeding B.V., Kolster Holding B.V.

1 record

Hivernenca

Active

Ficus carica L. · Common fig

JUNTA DE EXTREMADURA - FINCA LA ORDEN-VALDESEQUERA

1 record

Hansalola

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Klaus Olbricht

1 record

FEM 1

Active

Malus domestica (Suckow) Borkh. · Apple

Pierluigi Magnago^^^Fondazione Edmund Mach - Centro Ricerca e Innovazione (FEM-CRI)

2 records

H217905

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

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.