Table 1.

Temperature of plates in incubators set at 22 °C and under different photoperiods

	Permanent-day incubator	Long-day incubator	Short-day incubator	Constant darka	ANOVA
Surface of agar-based medium	23.0 ± 0.3	23.2 ± 0.2	23.4 ± 0.2	23.4 ± 0.2	P = 0.507
Within the agar-based medium	23.1 ± 0.2	22.8 ± 0.2	22.9 ± 0.2	23.1 ± 0.2	P = 0.828

^aPlates were kept in a black box covered with aluminum foil in the permanent-day incubator