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. 2021 Jul 24;10(8):710. doi: 10.3390/biology10080710

Figure 2.

Figure 2

Effect of 20 days exposure to different LED spectra on photosynthetic rate (A), Transpiration rate (B), Stomatal conductance (C) and Water use efficiency (D) of hemp seedlings. Here and subsequent figures: L1, Natural light; L2, White; L3, R8:B2; L4, R7:B2:G1; L5, R7:B2:FR1; L6, R6:B2:G1:FR1; L7, R5:B2:W2:FR1; L8, R5:B2:G1:FR1:UV1; L9, R6:B2:FR1:UV1; L10, R4:B2:W2:FR1:UV1; L11, R2:B2:G2:W2:FR1:UV1. All treatments used a photosynthetic photon flux density of 300 µmol m−2 s−1. Vertical bars indicate mean ± SE of six replicates. Different letters indicate significant differences at p < 0.05.