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.

Aisan

Active

Solanum lycopersicum L. · Tomato

Shevchenko Ihor Andriiovych

2 records

Albalonga

Active

Vitis vinifera L. · Common grape vine

LAND BAYERN WUERZBURG| Land Bayern, vertreten durch Bayerische Landesanstalt fuer Weinbau und Gartenbau - Abt. Weinbau und Oenologie -

2 records

ALIZA

Active

Citrus maxima x Citrus reticulata · Tangelo

Nir Carmi/Hanna Neuman-Leshem/Yosef Yaniv/Yoram Eyal/ Ahuva Frydman-Shani/Aliza Vardi/Avraham Elhanati/Luba Fanberstein

1 record

Zumba

Active

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

2 records

Zouk 55

Application submitted

Malus domestica (Suckow) Borkh. · Apple

Zouk B.V.

1 record

Akvamaryn

Terminated

Artemisia dracunculus L. · Tarragon

Rakhmetov Dzhamal Bakhlulovych, Korablova Olha Anatoliivna, Rys` Myroslava V'iacheslavivna,

2 records

Adoris

Active

Vitis L. · Grapevine

DAMIAN DOINAFILIMON ROXANANECHITA ANCUTAZALDEA GABI

2 records

YAGORE01

Active

Actinidia chinensis Planch. · Kiwifruit

Shengmou Yang^^^Ying Lv^^^Jian Yang^^^Xiaoqin Jiang

1 record

Zumba

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Fresh Forward Holding B.V.

1 record

YAGORE50

Active

Actinidia chinensis Planch. · Kiwifruit

Shengmou Yang^^^Ying Lv^^^Jian Yang^^^Xiaoqin Jiang

1 record

ACRESTA

Withdrawn

Solanum tuberosum L. · Potato

Veenkoloniale Boeren Bond (NL)

1 record

41 B Millardet et de Grasset

Active

Vitis L. · Grapevine

INCONNU (FR)

1 record

27-8 / Zlatohor

Terminated

Ribes uva-crispa L. · Gooseberry

Shestopal Halyna Serhiivna, Kopan Volodymyr Pavlovych, Kopan` Kira Mykolaivna,

2 records

Yduns æble

Active

Malus domestica (Suckow) Borkh. · Apple

1 record

Yucatan

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

Xirlero

Active

Eriobotrya japonica (Thunb.) Lindl. · Loquat

Cooperativa Agrícola de Callosa d'en Sarrià - Cooperativa Valenciana

1 record

Termaber

Application submitted

Capsicum annuum L. · Bell pepper

Ángeles Calatayud Chover^^^Yaiza Gara Padilla Herrero^^^Salvador López Galarza^^^Ramón Gisbert Mullor

1 record

Valnosia

Active

Vitis vinifera L. · Common grape vine

Marco Stefanini

1 record

Tessumriver

Active

Alstroemeria L. · Alstroemeria

Horti Partners V.O.F.

1 record

TERRAM 3701

Active

Prunus persica (L.) Batsch · Peach

Laurence Maillard^^^Ignasi Batlle^^^Cristian Fontich^^^Joaquim Carbó^^^Joan Bonany^^^Simó Alegre^^^Arsène Maillard

2 records

T112 219 TBC

Withdrawn

Vaccinium corymbosum L. · Highbush blueberry

Rolfe Nominees Pty Ltd

1 record

STAYMAN RED

Active

Malus domestica (Suckow) Borkh. · Apple

2 records

Sun Red

Active

Hybrids between Citrus sinensis and Citrus clementina

Giuseppe Russo^^^Marco Caruso^^^Paola Caruso^^^Concetta Licciardello^^^Maria Patrizia Russo

2 records

Sunset

Terminated

Malus domestica (Suckow) Borkh. · Apple

Institute of Experimental Botany AS CR v.v.i.

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.