Table 5. Analysis of variance which examined the effects of CO₂ stresses, water stress and water + CO₂ stresses on plant parameters.

Source	Treatment	Date	Date × treatment
NDVI	<0.0001	<0.0001	<0.0001
EVI	<0.0001	<0.0001	<0.0001
PRI	<0.0001	<0.0001	<0.0001
NDWI	0.3882	0.0009	0.0002
mNDWI	0.2987	0.0007	0.0003
Chlorophyll content	<0.0001	<0.0001	<0.0001
Pn	0.0001	<0.0001	0.0401
Gs	<0.0001	0.1108	0.0002
Tr	<0.0001	0.0003	0.0001
Y(II)	<0.0001	<0.0001	<0.0001
Biomass	0.2726	–	–