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.

Liubymytsia Turovtseva

Terminated

Prunus avium (L.) L. · Sweet cherry

Turovtseva Valentyna Oleksandrivna, Turovtsev Mykola Ivanovych,

2 records

Lledoner pelut

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Lanka

Terminated

Vitis vinifera L. · Common grape vine

Hadiiev Rashyd Shakurovych, Meleshko Larysa Fedorivna, Abliazova Aia Pavlivna, Tulaieva Maiia Ivanivna, Dokuchaieva IEvheniia Mykolaivna,

1 record

Kyivs'kyi rannіi

Terminated

Prunus persica (L.) Batsch · Peach

Sheremet Ivan Panasovych, Shablovs`kyi Borys Ivanovych, Rodionov Oleksandr Petrovych,

1 record

Lena

Protection expired

Erica x darleyensis Bean · Darley heath

Ludger Cattelaens

1 record

Kuklenski mavrud

Terminated

Vitis vinifera L. · Common grape vine

Mincho Kondarev, Dimitar Prodanski, Ivanka Boneva, Stoyan Kukunov, Penka Georgieva, Stoyanka Krastanova

1 record

Kristalen

Active

Vitis vinifera L. · Common grape vine

Galina Dyakova, Ralitsa Mincheva

2 records

Lauzet

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Kometa

Active

Vitis vinifera L. · Common grape vine

Dylyk Antonina Petrivna, Stasieva Mariia Ivanivna, Yarmak IEvheniia Dmytrivna, Bankovska Mariia Hryhorivna, Tulaieva Maiia Ivanivna, Dokuchaieva IEvheniia Mykolaivna, Meleshko Larysa Fedorivna,

2 records

Kondarev 10

Active

Vitis vinifera L. · Common grape vine

Mincho G. Kondarev

2 records

Kobzar

Active

Vitis vinifera L. · Common grape vine

Shein Tamara Volodymyrivna, Dylyk Antonina Petrivna, Storozhuk Kateryna Moisiivna, Tarakhtii Liudmyla Ivanivna, Chebanenko IEvheniia Pavlivna, Meleshko Larysa Fedorivna, Dokuchaieva IEvheniia Mykolaivna,

2 records

Knipperlé

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Kudret

Withdrawn

Solanum lycopersicum x Solanum pimpinellifolium · Tomato

Multi Tohum San. Tic. A.S.

2 records

Kondarev 6

Active

Vitis vinifera L. · Common grape vine

Mincho Kondarev

1 record

Karina ISK

Terminated

Prunus avium (L.) L. · Sweet cherry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

1 record

Koktebel`

Terminated

Ziziphus jujuba Mill. · Jujube

Sin`ko Lidiia Tymofiivna, Lytvynova Tetiana Viktorivna,

2 records

Kaylashki rubin

Active

Vitis vinifera L. · Common grape vine

Miroslav Ivanov, Vasil Valchev, Zdravko Nakov, Vanyo Haygarov

2 records

Jurançon blanc

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Kisweet

Active

Actinidia deliciosa (A. Chev.) C. F. Liang & A. R. Ferguson · Kiwifruit

STANICA FLORINGIUSEPPE ZUCCHERELLIILIESCU LAVINIA MIHAELAMIHAI COSMIN ALEXANDRU

2 records

Kardyshakh

Terminated

Vitis vinifera L. · Common grape vine

Bankovska Mariia Hryhorivna, Stasieva Mariia Ivanivna, Yarmak IEvheniia Dmytrivna, Dylyk Antonina Petrivna, Storozhuk Kateryna Moisiivna, Tulaieva Maiia Ivanivna, Meleshko Larysa Fedorivna, Dokuchaieva IEvheniia Mykolaivna,

2 records

Kermen

Terminated

Vitis vinifera L. · Common grape vine

Mincho G. Kondarev, Kiril K. Kralev, Nedyalka I.Matevska, Ivan D. Ganev, Krastyu V. Shishkov, Mariya G. Nedeva

1 record

Keknyelue B.3

Application submitted

Vitis L. · Grapevine

Majer Janos / Gyoerffyne Dr. Jahnke Gizella / Knolmajerne Szigeti Gyoengyi / Nemeth Csaba

1 record

Iyo-Komachi

Active

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

Information regarding the breeder received in the contribution to CPVO :Inaba Masaru

1 record

JĀNIS

Active

Chaenomeles japonica (Thunb.) Lindl. ex Spach · Japanese quince

E.Kaufmane, S.Ruisa

1 record

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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.