Figure 7.

Δcphsc70-1 had reduced seed thermotolerance. A, Seeds were sown on MS plates. After a 3-d cold stratification, plates were heated at 44.5°C for 150 min. Plates were then placed vertically and seeds were allowed to germinate for 7 d. Unheated controls were the same as those shown in Figure 3C. B, Root length of plants from heated seeds as shown in A, and unheated control seeds as shown in Figure 3C, was measured. The ratio of heated to unheated plants of the same genotype was plotted. The average of two independent experiments ± sd is shown. [See online article for color version of this figure.]