Fig. 2.

Dynamics of root growth of wt and ahr1 seedlings in the horizontal WSM→NM screening system and in NM. (A) Seeds were sown in the horizontal WSM→NM screening system and measurements were taken every 24 h for 10 d. (B) Seeds of the wt and ahr1 were sown in NM plates and, once seedlings had the same root size at 4 d, measurements were taken every 24 h for the next 4 d. Data are the average ±SD of three independent experiments (n=105). NM, normal medium. Root growth of ahr1 in the screening system is significantly different from that of the wt (Student’s t-test, p < 0.001), and is not significant in the NM (Student’s t-test, p=0.4). Asterisks denote significant differences.