TABLE 2.

Effect of adapting light to temperature in Phase (high light with high temperature followed by low light with low temperature) or in Antiphase (low light with high temperature followed by high light with low temperature) on leaf area of young tomato plants at day 20.

In Phase/Antiphase	Leaf area (cm2)
Phase	1,822 a
Antiphase	1,635 b
Constant	1,593 b
F-probability main effect (Phase/Antiphase)	0.032
Standard error of the means (SEM)	80.4
LSD (P = 0.05)	168

In a third treatment (Constant) average daily temperature and light intensity were constantly maintained. Data are means of 3 blocks with 6 replicate plants per block and averaged over two temperature amplitudes and 2 integration periods (so each value is based on 72 plants). Different letters indicate significant differences between treatments; Fisher’s LSD test, (P = 0.05).