Effects of Plant Size, Temperature, and Light Intensity on Flowering of Phalaenopsis Hybrids in Mediterranean Greenhouses

Figure 4

(a) Daily values of natural light intensity recorded during the experiment in the greenhouse compartments for flower induction and inflorescence development in the reference light regime (, blue line) and under supplemental lighting (, red line). (b) Light integral recorded during the phase of flower induction in (blue line) and (red line). Experiment 3 (effects of light intensity): supplemental lighting () corresponds to a constant additional PPFD of 150 μmol m⁻² s⁻¹ for 6 hours per day compared to the reference light regime ().

(a)

(b)