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Senescence-induced changes in the xanthophyll cycle activity and chlorophyll (Chl) fluorescence parameters were compared in detached barley (Hordeum vulgare L.) leaf segments kept for 6 d in darkness or under continuous “ white light” (90 μmol m−2 s−1). Before detachment of the leaf segments, the plants were grown at periodic regime [12 h light (90 μmol m−2 s−1)/12 h dark]. The de-epoxidation state...
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