Photosynthetic quotient

Lange BM, Rujan T, Martin W, Croteau R (2000) Isoprenoid biosynthesis The evolution of two ancient and distinct pathways across genomes. Proc NatT Acad Sci 97 13172-13177 Laws EA (1991) Photosynthetic quotients, new production and net community production in the open ocean. Deep-Sea Research 38 143-167... 

To set up stoichiometric equations for other relations between the fluxes is possible as well, but not additionally, as it would lead to linear dependent equations. The photosynthetic quotient turns out be... 

The photosynthetic quotient (PQ) and respiratory quotient (RQ) are dimensionless numbers indicating the relative amounts of oxygen and carbon involved in the processes of photosynthesis and respiration. 

The efficiency of utilization of PAR was calculated as the quotient of chemically bound energy in dry mass (in MJ) and absorbed photosynthetically active radiation (in MJ). 

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