Table 6: for influence of drought stress on photosynthesis and stomatal conductance of an acetolactate synthase inhibitor-susceptible and glyphosate-susceptible Palmer amaranth accessiona.

Duration of stress PhotosynthesisStomatal conductance
µmol CO2 m−2s−1mol H2O m−2s−1

Days value

30.01510.0325
50.02610.0321
70.03680.0270
90.0010<0.0001

aData are pooled over experiments.