Table 1.

Climate data recorded at the two sampling days. Daily mean photosynthetically active radiation (PAR), daily mean temperature (Tm), precipitation accumulated during the three weeks prior to the sampling date (P), daily mean solar irradiance (R), and daily mean relative humidity (RH).

Environment	PAR (μmol m−2 s−1)*	Tm (°C)*	P (mm)*	R (W m−2)*	RH (%)*
Water-stressed	1350	13.8	9.6	260.4	64.7
Unstressed	1404	17.4	90.2	285.8	75.6

* PAR is the mean of PAR values recorded by MultispeQ during all measurements performed each sampling date. Tm, R and RH are daily means recorded by the meteorological station at EEAD. P is the sum of precipitation recorded during the last three weeks prior the sampling date.