Direct Observations of Stomatal Movements
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120
100
80
60
40
400
350
300
250
200
150
"0
60
Vicia faba
-'-'-'-'-'-'-'- _.-._._.-.-.
120
180
240
Time [min]
239
Fig. 11.7. CO2 exchange and stomatal response (pore width) to changes in air CO2
concentration in light (360).lmol photons m- 2 s- 1 PAR) ( - and -0-) (VPD = 13mbar
bar-I) and in darkness (_.- and -e-) (VPD = 5mbarbar- I ). Dark respiration (constantly -O.3).lmol CO2 m- 2 s- l ) is not shown. Temperature 21°C. (After Kappen et al.
1987)
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9.5
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7.5
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3
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120
100
80
60
40
400
350
300
250
200
150
"0
60
Vicia faba
-'-'-'-'-'-'-'- _.-._._.-.-.
120
180
240
Time [min]
239
Fig. 11.7. CO2 exchange and stomatal response (pore width) to changes in air CO2
concentration in light (360).lmol photons m- 2 s- 1 PAR) ( - and -0-) (VPD = 13mbar
bar-I) and in darkness (_.- and -e-) (VPD = 5mbarbar- I ). Dark respiration (constantly -O.3).lmol CO2 m- 2 s- l ) is not shown. Temperature 21°C. (After Kappen et al.
1987)