Warming due to climate change alters physiological performance, biomass production and microenvironment of Avena sativa

Recent studies indicate that warming impairs the physiological performance of several plants; however, the warming effect depends on the thermal tolerance of each plant species. The effects of warming on oat ecophysiology and its biomass production have been little studied, although world oat demand is rising. Our aim was to evaluate how induced warming affects the ecophysiology and biomass production of oats by using open top chambers as a warming treatment and comparing it to a control. Ecophysiological parameters were measured, including relative humidity, soil temperature, growing degree days (GDD), soil respiration, seedling emergence, maximum quantum efficiency of PSII (F v /F m ), effective quantum yield of PSII (ϕPSII), electron transport rate (ETR), net assimilation rate ( A ), transpiration rate ( E ), stomatal conductance ( g s ) and biomass production. Induced warming decreased ( p