Table 3.

Results of Two-way ANOVAs on tobacco gas exchange parameters.

Treatment	Magnesium	Temperature	Magnesium × Temperature
Stomatal conductance	*	*	*
Intercellular CO2	*	*	ns
Photosynthetic rate	*	*	*
Transpiration rate	*	*	ns

The steric symbol (*) represents the significance at P< 0.05, and ns denotes the non-significant difference.