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Changes in photosynthetic activity, redox state of photosystem I (PSI) and photosystem II (PSII), as well as starch and sucrose content were studied on the source leaves of 18- to 20-day-old radish (Raphanus sativus L.) plants that were dark-adapted for 12 h and then exposed to continuous white light (170 μmol quanta/(m2 s)). The kinetic pattern of photosynthetic activity comprised three phases. Within...
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