Quantum Yields for CO2 Uptake in C3 and C4 Plants

摘要: The quantum yields of C3 and C4 plants from a number genera families as well ecologically diverse habitats were measured in normal air 21% O2 2% O2. At 30 C, the averaged 0.0524 ± 0.0014 mol CO2/absorbed einstein 0.0733 0.0008 under 21 0.0534 0.0009 0.0538 0.0011 O2, yield plant is shown to be strongly dependent on both intercellular CO2 concentration leaf temperature. plant, which independent concentration, temperature over ranges measured. changes are due inhibition. evolutionary significance dependence ecological effects discussed.