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Chromosome 3D influences photosystem II quantum efficiency in winter wheat

The photosynthetic efficiency of leaves under low light is considered to be a major determinant of crop photosynthetic performance. The aim of this study was to identify chromosome effects on some parameters associated with photosynthetic efficiency under low light. Photosynthetic activity was analyzed using a pulse-amplitude modulation fluorometer for the measurement of the photochemical quenching (Q p ) and of the quantum efficiency of Photosystem II electron transport (Φ PSII ) under an actinic light of 45 μmol m -2 s -1 on wheat (Triticum aestivum L.) plants grown in pots under natural conditions (.)