Variety traits
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.
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.
Fragaria L. · Strawberry
Reinhold von Sengbusch
Solanum lycopersicum L. · Tomato
Tezier SA (FR)
Solanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Vitis vinifera L. · Common grape vine
Land Baden-Württemberg, vertreten durch Staatliche Lehr- und Versuchs- anstalt für Wein- und Obstbau
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Prunus persica (L.) Batsch · Peach
Floyd Zaiger (US)
Solanum lycopersicum L. · Tomato
Kees Konst
Deschampsia cespitosa (L.) P. Beauv. · Tufted hairgrass
Vera Svabova c/o Oseva, Vsup Troubsko Slechtitelska stanice Vetrov / Ing. Ivo Nasinec c/o Oseva, Vsup Troubsko Zuchtstation Vetrov / Dipl.-Ing. Jiri Bumerl c/o TAGRO Cerveny Dvur, s.r.o.
Solanum lycopersicum L. · Tomato
Kuz`omens`kyi Oleksandr Volodymyrovych
Solanum lycopersicum L. · Tomato
VISSUM RESE
Prunus armeniaca L. · Apricot
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Vitis vinifera L. · Common grape vine
Prof. Dr.Dr.h.c. Gerhardt Alleweldt
Malus domestica (Suckow) Borkh. · Apple
Solanum lycopersicum L. · Tomato
DE RUITER SEEDS
Vitis vinifera L. · Common grape vine
Vivai Research Center, CZ
Prunus persica (L.) Batsch · Peach
Werner Grafmüller
Rubus L. · Blackberry
Lenkijos sodininkystės ir gėlininkystės institutas
Daucus carota L. · Carrot
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Rubus idaeus L. · Red raspberry
Zaweracz Wojciech, Danek Jan,
Solanum lycopersicum L. · Tomato
Ali Yuksel
Pyrus communis L. · European pear
Avena nuda L. · Naked oat
Danko Hodowla Roslin Sp.z.o.o.