Table 2.

Effects of different concentrations of GR24 on CA, NR activities, and chlorophyll fluorescence in Artemisia annua

Treatments/Parameters	CA activity (µmol CO2 kg−1 FW s−1)	NR activity (µmol NO2 g−1 FW h−1)	Chlorophyll fluorescence (Fv/Fm)
Control	229.23 ± 0.95e	304.40 ± 2.36e	0.740 ± 0.005c
0.5 µM	236.97 ± 1.02d	311.20 ± 3.61d	0.762 ± 0.007b,c
1 µM	245.63 ± 1.17c	320.40 ± 5.92c	0.772 ± 0.005b
2 µM	251.15 ± 1.30b	332.60 ± 4.94b	0.778 ± 0.007b
4 µM	259.45 ± 1.58a	344.80 ± 3.49a	0.833 ± 0.029a
8 µM	254.22 ± 1.33b	339.30 ± 1.13a,b	0.790 ± 0.015a,b

Data represent the mean value ± SE from five replicates (n = 5). The different lower case letters represent statistically significant differences between treatments (p < 0.05) according to the Duncan’s multiple range test