SOMATAL CYCLING IN PHASEOLUS-VULGARIS L IN RESPONSE TO GLYPHOSATE

Leaf conductance and net photosynthesis decreased simultaneously in response to treatment of bean leaves with glyphosate. In a constant environment of 300 μE/m2/s light, 50% relative humidity, and either 21 or 27°C, spontaneous stomatal cycling occurred in response to glyphosate treatment. At a higher temperature (37°C) or a higher relative humidity (80%) no stomatal cycling was observed. © 1979.