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.

Frau Nobuko

Protection expired

Hydrangea L. · Hydrangea

HIROSHI EBIHARA

4 records

Drisblacktwelve

Active

Rubus L. subg. Rubus · Blackberry

Gavin R. Sills^^^Andrea M. Pabon^^^Mark F. Crusha

5 records

Delcored

Active

Malus domestica (Suckow) Borkh. · Apple

Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.

8 records

Delfloga

Active

Malus domestica (Suckow) Borkh. · Apple

Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.

6 records

Birutė

Active

Medicago sativa L. · Alfalfa

Lietuvos agrarinių ir miškų mokslų centras

4 records

C 35

Active

Citrus x insitorum Mabb.

5 records

Brilla

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Walther Faedi^^^Gianluca Baruzzi^^^Pierluigi Lucchi^^^Paolo Sbrighi

5 records

Babylon

Active

Vicia faba L. · Broad bean

Nickerson International Research S.N.C.

5 records

ASFCOT0405

Active

Prunus armeniaca L. · Apricot

Maillard Arsene|Elne, FR / Maillard Laurence|Elne, FR

4 records

Ambulo Blanc

Active

Vitis vinifera L. · Common grape vine

Walker Michael Andrew / Tenscher Alan C. / Riaz Summaira / Romero Ninfa

4 records

Ankong

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

SANTHO BEHEER B.V.

4 records

AC Harrow Delicious

Active

Pyrus communis L. · European pear

David M. Hunter

7 records

AC Harrow Bounty

Active

Pyrus communis L. · European pear

Agriculture et Agroalimentaire Canada (CA)

7 records

Aiace

Active

Trifolium pratense L. · Red clover

IT SIAN CODE: 1324 NATURA SRL

4 records

Sweet Sense

Active

Carica papaya L. · Papaya

Roberto Jaime García Padilla

4 records

Sunjodi 042

Active

Diascia Link & Otto · Twinspur

Jones Jimmy

4 records

Saxbriwhi

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Meinl Katrin

5 records

Saxdifioros

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Meinl Katrin

5 records

Ralli Seedless

Active

Vitis L. · Grapevine

GUISEPPE RALLI Y IOANDA RALLI

6 records

Ramst

Active

Hydrangea L. · Hydrangea

RAMPP JUNGPFLANZEN GMBH & CO. VERTRIEBS KG

4 records

Plapink 14103

Active

Rubus idaeus L. · Red raspberry

Plantas de Navarra S.A.

4 records

Ramars

Active

Hydrangea L. · Hydrangea

RAMPP JUNGPFLANZEN GMBH & CO. VERTRIEBS KG

4 records

Patrecia

Active

Vaccinium corymbosum L. · Highbush blueberry

Paul M. Lyrene James W. Olmstead

5 records

ORIT

Active

Citrus L. · Citrus

THE STATE OF ISRAEL-MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENT-AGRICULTURAL RESEARCH ORGANIZATION( ARO)

5 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.