Cold tolerance determines the cabbage's ability to germinate at low temperatures, withstand spring frosts as seedlings, and maintain the resistance of formed heads to short-term exposure to sub-zero temperatures.
In the reference
6
varieties
crop White cabbage,
where this is mentioned in the description.
Evaluation of crop cold tolerance is based on the plant response during key development stages. Cabbage seeds are capable of initiating germination at temperatures of +2…+3 °C. Hardened seedlings can withstand brief frosts down to –5…–7 °C, while the formed heads of late-maturing hybrids remain viable when temperatures drop to –5…–8 °C.
The physiological resistance of cabbage to cold directly affects agronomic practices. Prolonged exposure to low positive temperatures, below +5…+8 °C, at early stages of development can trigger bolting — the formation of a flower stalk instead of a head. The degree of cold tolerance in breeding lines is assessed through indicators of adaptability to temperature stress and the stability of yield formation under various weather conditions.
General information about the subject — on the page
Cold tolerance.
Varieties of White cabbage 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.