Table 1.

Times of application of different concentrations of environmental CO₂ to induce the closure and opening of stomata.

Stage I		Stage II		Stage III		Stage IV
Initial Period Closed Stomata		With Stomatal Restriction (R)		Induction Period Open Stomata		No Stomatal Restriction (nR)
Time min	[CO2]	Time min	[CO2] µL L−1	Time min	[CO2] µL L−1	Time min	[CO2] µL L−1
0	350	21	1500	107	50	152	1500
8	350	28	1200	132	50	162	1200
13	50	32	900	147	50	167	900
		37	700			172	700
		47	500			177	500
		54	350			182	350
		60	200			187	200
		67	100			192	100
		72	50			204	50