In order to reduce the possible stress because of the moving,
on the two days prior to the photosynthesis, transmittance and
reflectance measurements, plantswereplaced in a climatechamber
at the following conditions: day/night temperature 20/18 ◦C, photon
flux density 100molm−2 s−1 (Philips TLD 50W840 HF), 16 h
long day, relative humidity 65% and ambient CO2 concentration.