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1. The induction of flowering by prolonged exposure to low temperatures, as during the winter in a temperate climate.
2. The exposure of seeds or plants to low temperatures in order to induce or hasten flowering.

ver′nal·ize′ v.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Clones were planted in the field before winter to fulfill the vernalization requirement.
Biennial plants require a vernalization period in order to flower.
They need warm, moist soil to grow roots in August and September and up to 3 months of cold vernalization to flower the following year.
Vernalization. Still remembering your school days, particularly how traditional geography was taught, we were all shown how the earth moved around the sun and how the seasons changed.
The researchers, who in 2003 cloned the first wheat vernalization gene, VRN1, discovered that VRN1 and VRN2 work together to confer the winter growth habit.
This is called vernalization. If your seed requires this then sow now to give as long a period of cold as possible.
Lysenko's theory of "vernalization," Lyne (1987) argues that Lysenko's theories enjoyed wide acceptance in the Soviet Union, not because they were scientifically sound (in fact, they were later proven to be unsound), but because they offered a view of heritability that supported Soviet ideology.
In many temperate species, flower initiation requires exposure to a temperature threshold for a given period of time (e.g., vernalization), and temperature and photoperiod often interact as in the case of photoperiod-related flowering that occurs only after cold treatment.
The process, called vernalization, requires that the corm be exposed to temperatures of 2-5 [degrees] C (36-41 [degrees] F) for an extended period of time and then warmed up.
Vernalization in the cold for 23 months releases the gemmules from diapause and allows them to resume development when warmed to 20-23 [degrees] C.
This range of variability is also found in cultivated varieties of Brassica, ranging from rapid growing spring rapeseed to turnip, that develop large taproots and require cold vernalization to initiate flowering.