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Relationship between total leaf area and stem length under the interactive effect between light spectra and temperature under two light intensities of 150 μmol m-2 s-1 (A) and 300 μmol m-2 s-1 (B) in total photon flux density (TPFD; 400-800 nm). The two light spectra are denoted based on the percentage of far-red photons (FR; 700-800 nm) in TPFD, i.e., 0 and 20% FR light. The three temperatures were 20, 24, and 28°C.
