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.

PBB 1473

Active

Rubus idaeus L. · Red raspberry

Thompson Ellen

4 records

Nui

Active

Vaccinium L. · Bilberry

Wood, Franklin H.|Hamilton, New Zealand

4 records

LC NO7

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Schoemaker Alex Frederick

4 records

Homigo

Active

Hydrangea L. · Hydrangea

Jacobus Gerardus Hofstede|Wilhelmus Jacobus Gerardus Hofstede

4 records

Jong 01

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Johannes Maria de Jong

4 records

Itasca

Active

Vitis L. · Grapevine

Peter Hempstad

4 records

Hamid

Active

Prunus avium (L.) L. · Sweet cherry

Mirko Schuster, D-01324 Dresden

5 records

Burpeachnineteen

Active

Prunus persica (L.) Batsch · Peach

Slaughter John K.|Clovis, CA / Gerdts Timothy J.|Kingsburg, CA

5 records

CR Brisset

Active

Malus domestica (Suckow) Borkh. · Apple

Frederic Brisset

5 records

Buhee

Active

Prunus persica (L.) Batsch · Peach

Nagisa AIZAWA

5 records

Aliza

Active

Citrus L. · Citrus

STATE OF ISRAEL MINISTERY ARO

4 records

Bailmacseven

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Roberts David Jonathan,McBee Oren,Schulze Justin

4 records

Aiva

Active

Fagopyrum esculentum Moench · Buckwheat

Latvia University of Life Sciences and Technologies

EE LT LV

6 records

Patricia

Terminated

Hordeum vulgare L. · Barley

UNISIGMA

AT DK

6 records

Meloman

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

LT PL

7 records

Santana.

Active

Zea mays L. · Maize

Germobanco Agrícola da Macaronésia

HU PT

7 records

MRS. KUMIKO

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Shouji SAKAMOTO (JP)

DK FR

4 records

Pink Moon

Active

Solanum lycopersicum L. · Tomato

Sakata Vegetables Europe SARL (FR)

CZ FR

3 records

PRO-C-87

Active

Prunus persica (L.) Batsch · Peach

VIVEROS PROVEDO, S.A.

7 records

SMS-16-CA 2014-16

Active

Prunus avium (L.) L. · Sweet cherry

Southwick Stephen M.

3 records

Powell Summer Navel

Active

Citrus sinensis (L.) Osbeck · Sweet orange

Powell Navel Pty Ltd

4 records

PRO C 329

Active

Prunus persica (L.) Batsch · Peach

VIVEROS PROVEDO, S.A.

6 records

Douce de l Avent

Active

Malus domestica (Suckow) Borkh. · Apple

Institut Français des Productions Cidricoles (I.F.P.C.), Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

5 records

FL 20.80-4

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Whitaker Vance

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.