Fig. 4
Diurnal expression of tomato SP3D (a), SP5G (b), SP5G2 (c), and SP5G3 (d) by night break (NB) and red-to-far-red light ratio (R:FR) treatments under day neutral (DN) conditions (12Â h light/12Â h dark), respectively. The black line represents the control (R:FR value is 7.4), the red line represents NB every 2Â h, and the blue line represents a R:FR value of 0.6. Leaves were harvested from plants at 4-h intervals. The vertical axis shows relative mRNA levels of FT-like genes normalized to the expression of Actin. Error bars represent the standard error among technical replicates. White, black, red and blue bars at the bottom indicate light, dark red and far-red light periods, respectively