Fig. 5.

Blocking photosynthesis during an LD can inhibit flowering and FT expression. Flowering (A) and FT expression (B) are compared following an exposure to normal (solid bar) or CO₂-free air (hatched bar) during a 16 h high light LD (LD-R, 100 μmol m⁻² s⁻¹) or to an LD at a 10-fold lower intensity from the same fluorescent lamps (LD-lR, 10 μmol m⁻² s⁻¹).