Variety traits

Apple Frost Resistance

Malus Mill.

The ability of apple cultivars to withstand critical winter temperatures without fatal tissue damage. This indicator is dynamic and depends on the dormancy phase, and also varies between the above-ground part of the tree and the root system.

In the reference 24 varieties crop Apple, where this is mentioned in the description.

To assess apple frost resistance, the laboratory method of freezing scions during deep dormancy is used, followed by an analysis of tissue browning, rated on a five-point scale. Cultivars from Siberian and Ural breeding programs are capable of withstanding temperatures from -35°C to -45°C, whereas southern cultivars are damaged at temperatures as high as -25°C. The root system is significantly less resistant and suffers at temperatures ranging from -10°C to -16°C.

Apple frost resistance includes the ability to withstand early autumn frosts, winter lows, and freezes occurring during and after thaws, when the plant loses its hardening. Even latent tissue freezing without visible necrosis leads to a decrease in the productivity and longevity of the tree, which necessitates the careful selection of rootstocks and agrotechnical practices in high-risk farming zones.

General information about the subject — on the page Frost hardiness.

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.

Profusion

Active

Malus Mill. · Apple

Sagaplant AS, N-3812 Akkerhaugen

2 records

Pb-4 ISK

Active

Malus Mill. · Apple

1 record