Variety traits
Malus domestica (Suckow) Borkh.
Sugar content in apples is a fruit quality indicator reflecting sugar concentration, which determines flavor profile, optimal harvest timing, and storage potential of the crop.
In the reference 145 varieties crop Apple, where this is mentioned in the description.
To assess sugar content, the refractometric method is used to measure the proportion of soluble solids in degrees Brix, as well as laboratory titration methods. An important quality criterion is the sugar-acid ratio, which represents the ratio of sugars to titratable acidity: for dessert varieties, it ranges from 20–34, while for sweet varieties, it exceeds 35. The absolute sugar content varies from 8–9% in temperate regions to 10–11% or higher in southern regions, with varieties showing 13–14% considered high-sugar.
This indicator serves as a key marker for harvest maturity alongside flesh firmness and the iodine-starch test. Sugar content depends on the genetic characteristics of the variety, agricultural practices, including nitrogen nutrition, and climatic conditions. Excessive nitrogen fertilization can disrupt sugar metabolism, while insufficient light or excessive irrigation may lower sugar concentration, negatively impacting the taste and shelf life of the apples.
General information about the subject — on the page Sugar content.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Malus domestica (Suckow) Borkh. · Apple
Y Yoshida, S Tsuchiya, S Sadamori, H Murakami, S Ishizuka (JP)
Malus domestica (Suckow) Borkh. · Apple
IFO SARL (FR)
Malus domestica (Suckow) Borkh. · Apple
Takao Takano
Malus domestica (Suckow) Borkh. · Apple
International Fruit Obtention (IFO) S.N.C.
Malus domestica (Suckow) Borkh. · Apple
Sandra Maria Boerekamp, Mark Boerekamp
Malus domestica (Suckow) Borkh. · Apple
Dalival SAS (FR)
Malus domestica (Suckow) Borkh. · Apple
Vissers Orchard Nursery Inc
Malus domestica (Suckow) Borkh. · Apple
Prof. Dr. Manfred Fischer / Heinz Murawski + im Institut für Obstforschung Dresden-Pillnitz / Prof. Dr. Christa Fischer
Malus domestica (Suckow) Borkh. · Apple
SCHNIGA S.R.L.
Malus domestica (Suckow) Borkh. · Apple
Yahagi Ryozo
Malus domestica (Suckow) Borkh. · Apple
FUJIMAKI HIDEO
Malus domestica (Suckow) Borkh. · Apple
Zaiger's Inc. Genetics (US)
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Schniga GmbH, D
Malus domestica (Suckow) Borkh. · Apple
Horticulture & Food Research Institute of New Zealand Ltd
Malus domestica (Suckow) Borkh. · Apple
SNC Elaris| FR
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)
Malus domestica (Suckow) Borkh. · Apple
IFO SARL (FR)