concentrations on physiological and developmental parameters of
potato in a wide range of climatic conditions and found that light
saturated net photosynthesis rate (Asat) declined by 5% at the time
of maximum leaf area under elevated O3 treatment a target
exposure of 60 ppb. The decline in Asat further increased with
increasing age. In the present study also decline in Ps rate increasedin ACO2 + AO3 and ACO2 + EO3 treatments compared to ACO2 + RO3
with advancing age.