highly significantP < 0.001
Analyses of variance showed that genotype, the duration of cold treatment and their interactions were highly significant (P < 0.001) for LT 50 and FLN indicating that there were measurable differences in the response to cold treatment (Figure 1 and Table 1 ). 2.1 Vernalization response Vernalization is the acceleration of the competence to flower by cold-adapted plants upon exposure for a period of time to low non-freezing temperature.