FIGURE 14.
Germination of arr5, arr6, arr7 mutants, Pro35S:ARR7 lines, ahk2 ahk3 double mutants, and the wild-type plants in the presence of exogenous ABA. Seeds of the wild type (Col-0), arr5, arr6, arr7, two different Pro35S:ARR7 transgenic lines, and ahk2-2 ahk3-3 were plated on MS medium supplemented with the indicated concentrations of ABA, chilled for 4 days at 4 °C in darkness, and incubated for 2 days at 21 °C with a 16-h light photoperiod. The number of germinated seeds was expressed as the percentage of the total number of seeds plated (63). Statistically significant change with p < 0.05 (Student's t test) or p < 0.01 compared with the wild type is indicated by * or **.