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Dependences of the photosynthetic CO2 assimilation rate (Ahv) and linear electron flow (LEF) on intensity of the actinic light (photosynthetically active radiation, PAR) after 18 days (a), 25 days (b), and 32 days (c) of cultivation (n = 6). “8 h:16 h” is 8 h (light):16 h (dark), “16 h:8 h” is 16 h (light):8 h (dark), and “24 h:0 h” is 24 h (light):0 h (dark). *, difference from control plants cultivated under 16 h (light):8 h (dark) were significant (p < 0.05).
