Figure 5.

The bhlh093-1/bhlh061-1 double mutant is affected by a light-dependent loss of apical dominance. A Apical dominance in as a function of light intensity and photoperiod. B Developmental time line of bolting and silique ripening (dotted bar; hollow bar indicates duration of vegetative growth) is restored by GA₃ application to the shoot apex (standard deviation is indicated for n = 6–8). C Time course of primary inflorescence shoot elongation in untreated wild-type controls (black circles), mock-treated wild-type controls (hollow circles), untreated bhlh093-1/bhlh061 double mutant (hollow triangles), bhlh093-1/bhlh061-1 double mutant with GA3 applied to the shoot apex (hollow squares), and bhlh093-1/bhlh061-1 double mutant with GA3 applied to rosette leaves (black squares) (standard deviation is indicated for n = 3–4; note that some bars are smaller than symbols).