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.

Vivika

Active

Calluna vulgaris (L.) Hull · Common heather

H. C. Hoekert

1 record

VaccarÃ¨se

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Versaillaise blanche

Active

Ribes L. · Currants

INCONNU (FR)

1 record

Velika

Active

Vitis vinifera L. subsp. vinifera · Wine grape

Ivan D. Todorov

2 records

Vechornytsia

Active

Ribes nigrum L. · Blackcurrant

Tereshcenko IAna Serhiivna, Yareshcenko Oleksandr Mykolaiovych,

2 records

Tressot

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Udavchyk

Active

Solanum lycopersicum L. · Tomato

Shabetia Oksana Mykolaivna, Kravchenko Vladyslav Andriiovych, Skliarevs`ka Valentyna Vasylivna, Krutko Roman Vasylovych, Udovichenko Svitlana Mykolaivna,

2 records

VALLEY GOLD

Active

Citrus L. · Citrus

AGRICULTURAL RESEARCH COUNCIL

2 records

Ukrains'kyi 85

Terminated

Vitis vinifera L. · Common grape vine

Abliazova Aia Pavlivna, Tulaieva Maiia Ivanivna, Dokuchaieva IEvheniia Mykolaivna, Aivazian Petros Karapetovych,

1 record

Tri Kule

Active

Ficus carica L. · Common fig

STANICA FLORINCURICI NICOLAEPEEV OTIMAN PAULA DIANABUTCARU ANA CORNELIAILIESCU LAVINIA MIHAELA

2 records

Tourbat

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Topla

Active

Rubus idaeus L. · Red raspberry

Ribanjou (FR)

1 record

Tressalier

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

UF 914

Application submitted

Citrus maxima x Citrus reticulata · Tangelo

Frederick G. Gmitter Jr

1 record

Terret-Bourret

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Tribute

Terminated

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Livestock and Seed Division (US)

1 record

TC Sun 2

Active

Prunus salicina Lindl. · Japanese plum

Budzynskyi Oleksandr Serhiiovych,Yarmoliuk Ivan Savych,

2 records

Touriga nacional N

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Terret blanc

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Terret gris

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Symvol - 4

Terminated

Nicotiana tabacum L. · Tobacco

Matiieha Ol`ha Omel`ianivna, Vasyliv Tamara Vasylivna, Savina Olena Ivanivna,

1 record

Téoulier

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Syców

Active

Pinus nigra J. F. Arnold · European black pine

Państwowe Gospodarstwo Leśne Lasy Państwowe Nadleśnictwo Syców

1 record

TEMPRANILLO BLANCO

Active

Vitis vinifera L. · Common grape vine

C.I.D.A. DE LA RIOJA

2 records

1 2 ... 64 65 66 67 68 69 70 ... 175 176 Next

Jump to page 25 50 57 75 77 101 126 151 167

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

All terms →

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.