Figure 3

Flowering time responsiveness to vernalization. Seeds of inbred lines were cold-treated for the number of weeks indicated on the x-axis. Seeds were all sown on the same day and then grown under a 20-hour photoperiod. Flowering time was recorded for each plant when the first flower was visible to the naked eye. For calculation purposes, plants that had not yet flowered by the end of the experiment, 81 days after transfer to the growth chamber, were recorded as having a flowering time of 81 days. The average flowering time (y-axis) for each line and cold treatment is shown. Error bars indicate the standard deviation based on 13-20 plants. To test the statistical significance of observed differences, pairwise ANOVAs were performed for the longest cold treatment compared to each of the shorter cold treatments for each line. *: p-value < 0.05, **: p-value < 0.01, ***: p-value < 0.001.