How is the genotype influencing photosynthetic response to elevated CO2 of Fagus sylvatica L. from Italy and Germany ?

European beech (Fagus sylvatica L.) is one of the most important broad-leaves trees in Europe The ecophysiological response to environmental changes differs among the populations. The genetic variations of photosynthesis of beech from Italy and Germany and their response to elevated CO2 were investigated under controlled environmental conditions. Changes in photosynthesis will be later related to gene activity.