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. 2017 May 30;8:917. doi: 10.3389/fpls.2017.00917

Figure 1.

Figure 1

Relative spectral distribution of the light treatments: Red (R), Blue (B), Red/Blue (3:1) (RB) and white (W). Spectrum was measured at the plant canopy level with a JAZ spectrometer (Ocean Optics, FL, US).