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Response of net photosynthesis (A) to (A) photosynthetic photon flux density (PPFD), and (B) internal concentration of CO2 (Ci) by 54-d-old eophylls of seedlings of H. courbaril growing with (closed symbols) or without (open symbols) cotyledons in a growth room. The curves in (A) were obtained with constant CO2 at 340 μmol mol−1, and in (B) with constant PPFD at 200 μmol m−2 s−1. Vertical bars represent the standard deviation (n = 20).
