Analysis of the Quantum Yield of Photosynthesis in Crop Plants

摘要

The photosynthetic yield expresses the ratio between photosynthesis and light. The photosynthesis is expressed as the rate of CO2-uptake and the light in light flux density. The analysis in question proves that the spectral sensitivity to light for different plants expressed in absorbed rate CO2 per unit of area and unit of time will give the same result if the calculation is made with the irradiance instead of absorbed photons. The relative spectral sensitivity of the plants changes in the same way as the relative spectral intensity distribution of the sunlight changes when the intensity goes from faint (in the morning) to intensive (at noon). In that case the light intensity should be expressed in energy measure and not in quantum measure.