Figure 2.

The maladjustment time window in the dfc mutant (black bars) compared with that in wild-type (white bars) seedlings, and the growth rates of those seedlings on 0.3 or 9.4 n medium. A, Primary root length of wild-type and dfc seedlings grown on the 0.3 n medium for 2 d after transfer from one-half-strength (1/2) MS medium on different days (0–5). B, Primary root length of wild-type and dfc seedlings on day 7 from the start of incubation. Both types of seedlings were grown on one-half-strength MS medium for 0 to 7 d and then transferred onto the 0.3 n medium for the remaining time (7–0 d). C, Primary root growth rates of wild-type and dfc seedlings from days 3 to 6 and from days 6 to 9 on 0.3 or 9.4 n medium. Data are means ± sd (n = 4), and each replicate consisted of a pool of 10 to15 plants. Black bars with single asterisks indicate significant differences at P < 0.05, and those with double asterisks indicate highly significant differences at P < 0.01 (Student’s t test).