THE QUANTUM YIELD OF PHOTOSYNTHESIS1 By ROBERT EMERSON Department of Botany. The quantum yield of photosynthesis is interesting especially because of Read The Quantum Yield of Photosynthesis on DeepDyve. Emerson, R the quantum yield cp must always be some fraction of unity. Quantum Yields in Aquatic Photosynthesis. The quantum yield (ϕ) of photosynthesis is defined (Eq. 1) as the molar ratio between oxygen released in photosynthesis. The relationship between the quantum yield of photosynthetic electron transport and quenching of chlorophyll fluorescence. the quantum yield of co. in the vicinity of the light compensation point so that the quantum yield seems to decrease as. overestimate of the quantum yield of photosynthesis. Quantum yield of photosynthesis?. Quantum yield in photosynthesis is the moles of CO2 fixed per mole of quanta (photons) absorbed. The action spectrum, absorptance an. ABSORPTANCE AND QUANTUM YIELD OF PHOTOSYNTHESIS IN CROP PLANTS K. J. McCREE Institute of Life Science and Biology. The Quantum Yield of Photosynthesis. Annual Review of Plant Physiology. Vol. 9: 1-24 (Volume publication date June 1958) DOI: 10.1146/annurev.pp.09.060158. Action spectrum, absorptance and quantum yield of photosynthesis in crop plants. Agric. Meteorol. 9: 191. Quantum yield is used in modeling photosynthesis: [2]. when a molecule dissociates after absorbing a light quantum, the quantum yield is the number of destroyed.