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Variety traits

Sugar content in apples

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.

Sources8

Varieties of Apple mentioned in the description

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.

Gilmer Fuji

Withdrawn

Malus domestica (Suckow) Borkh. · Apple

GILMER CHARLES^^^GILMER CYNTHIA

2 records

FEM 1

Active

Malus domestica (Suckow) Borkh. · Apple

Pierluigi Magnago^^^Fondazione Edmund Mach - Centro Ricerca e Innovazione (FEM-CRI)

2 records

FEM 8

Active

Malus domestica (Suckow) Borkh. · Apple

Pierluigi Magnago^^^Fondazione Edmund Mach - Centro Ricerca e Innovazione (FEM-CRI)

2 records

Mojca

Application submitted

Malus domestica (Suckow) Borkh. · Apple

Alojzij Mustar

SI
1 record

Norge

Withdrawn

Malus domestica (Suckow) Borkh. · Apple

Michelangelo Leis^^^Alessio Martinelli

2 records

Freya

Active

Malus domestica (Suckow) Borkh. · Apple

Information not available - Contact NL authorities

NL
1 record

Royal Fuji

Withdrawn

Malus domestica (Suckow) Borkh. · Apple

GEORG SCHNEIDER GBR

2 records

WUR29

Active

Malus domestica (Suckow) Borkh. · Apple

STICHTING WAGENINGEN RESEARCH-WAGENINGEN PLANT RESEARCH

2 records

Odra

Application submitted

Malus domestica (Suckow) Borkh. · Apple

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
3 records

Zymova Vitaminka

Terminated

Malus domestica (Suckow) Borkh. · Apple

Klymenko Svitlana Valentynivna, Tereshcenko Tamara Petrivna, Kuznetsov Volodymyr Viktorovych, Honcharovska Inna Valeriivna,

UA
2 records

Grifer

Protection expired

Malus domestica (Suckow) Borkh. · Apple

J Bick Griffith (US)

FR
1 record

JONAPRIM D'H

Withdrawn

Malus domestica (Suckow) Borkh. · Apple

VERHAERT ERIK

BE
1 record

Gala Royal Beaut

Active

Malus domestica (Suckow) Borkh. · Apple

Information not available - Contact NL authorities

NL
2 records

Repinau

Active

Malus domestica (Suckow) Borkh. · Apple

1 record

MAŠANKA

Active

Malus domestica (Suckow) Borkh. · Apple

1 record

Peixoto

Active

Malus domestica (Suckow) Borkh. · Apple

1 record