Soybeans were grown at three CO 2 concentrations in outdoor growth chambers and at two concentrations in controlled‐environment growth chambers to investigate the interactive effects of CO 2 , temperature and leaf‐to‐air vapour pressure difference (LAVPD) on stomatal conductance. The decline in stomatal conductance with CO 2 was a function of both leaf temperature and LAVPD. In the field measurements, stomatal conductance was more sensitive to LAVPD at low CO 2 at 30 °C but not at 35 °C. There was also a direct increase in conductance with temperature, which was greater at the two elevated carbon dioxide concentrations. Environmental growth chamber results showed that the relative stomatal sensitivity to LAVPD decreased with both leaf temperature and CO 2 . Measurements in the environmental growth chamber were also performed at the opposing CO 2 , and these experiments indicate that the stomatal sensitivity to LAVPD was determined more by growth CO 2 than by measurement CO 2 . Two models that describe stomatal responses to LAVPD were compared with the outdoor data to evaluate whether these models described adequately the interactive effects of CO 2 , LAVPD and temperature.
No takes yet. Share an insight, caveat, or question.
Wilson et al. (1997) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: