Photosynthesis of oak trees [<i>Quercus petraea</i> (Matt.) Liebl.] during drought under field conditions: diurnal course of net CO<sub>2</sub> assimilation and photochemical efficiency of photosystem II
ABSTRACT Adult trees of Quercus petraea were submitted to controlled water shortage in a natural stand near Nancy, France. Diurnal course of net CO 2 assimilation rate (A) was m...