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Figure 3

From: Resource use efficiency of indoor lettuce (Lactuca sativa L.) cultivation as affected by red:blue ratio provided by LED lighting

Figure 3

(A) Abaxial stomatal size, (B), abaxial stomatal density and (C) stomatal conductance for lettuce plants grown under LED lights with different RB ratios (closed symbols) or under fluorescent light (open symbols). Mean values ± SE (45 replicate plants). Different letters indicate statistically significant differences at P ≤ 0.05.

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