Seasonal changes in optically assessed epidermal phenolic compounds and chlorophyll contents in leaves of sessile oak ( Quercus petraea ): towards signatures of phenological stage

Seasonal patterns of dry mass invested in chlorophyll and epidermal phenolic compounds (EPhen) were investigated in vivo using optical methods, in leaves of 2-year-old oaks ( Quercus petraea Matt. (Liebl.)) grown under semi-controlled conditions. The plasticity of the seasonal pattern was investigat...

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