Parameters of the Light Curve of Net Photosynthesis in Heracleum sosnowskyi Leaves.

QY: photosynthetic quantum yield (calculated as the tangent of the slope ratio of the light curve at low light intensities: 0–100 μM photons m-2c-1), LCP: Light Compensation Point is the light intensity at which the total CO2-exchange is equal to zero, PMAX: maximum photosynthesis rate, Pmax*—maximum photosynthesis rate calculated by SLA, IRA: intensity of radiation adaptation, PIRA: photosynthesis rate at IRA. For the QY P-value