Table 3. Alkaloid content in Coptis chinensis rhizomes under the two planting modes (%).

	Berberine	Epiberberine	Coptisine	Palmatine	Jatrorrhizine	Magnoflorine	Columbamine	Total alkaloids
MD2	7.04 ± 0.128a	5.42 ± 0.127a	1.69 ± 0.038de	1.85 ± 0.034a	0.79 ± 0.006c	0.37 ± 0.006c	1.16 ± 0.020a	18.31 ± 0.329a
MD3	5.78 ± 0.037d	4.93 ± 0.047c	1.93 ± 0.020a	1.71 ± 0.012c	0.85 ± 0.007a	0.36 ± 0.008c	0.95 ± 0.003bc	16.52 ± 0.099c
MD4	6.31 ± 0.034c	4.73 ± 0.029d	1.94 ± 0.019a	1.74 ± 0.009b	0.81 ± 0.014bc	0.37 ± 0.021c	1.10 ± 0.012a	16.99 ± 0.106b
MD5	5.89 ± 0.063d	5.11 ± 0.065b	1.76 ± 0.021cd	1.60 ± 0.017e	0.79 ± 0.016c	0.38 ± 0.039c	1.00 ± 0.013b	16.54 ± 0.160c
ML2	5.39 ± 0.012e	5.30 ± 0.027a	1.63 ± 0.015e	1.66 ± 0.005d	0.79 ± 0.012c	0.38 ± 0.011c	0.98 ± 0.007bc	16.13 ± 0.038d
ML3	5.80 ± 0.018d	4.85 ± 0.067cd	1.88 ± 0.129ab	1.70 ± 0.021c	0.85 ± 0.003a	0.35 ± 0.004c	0.93 ± 0.059bc	16.37 ± 0.085cd
ML4	6.27 ± 0.133c	4.82 ± 0.143cd	1.90 ± 0.079ab	1.73 ± 0.006bc	0.83 ± 0.020b	0.41 ± 0.006b	0.94 ± 0.112bc	16.91 ± 0.271b
ML5	6.51 ± 0.056b	4.82 ± 0.002cd	1.82 ± 0.024bc	1.55 ± 0.010f	0.79 ± 0.014c	0.51 ± 0.003a	0.90 ± 0.001c	16.90 ± 0.106b

Note:

Different letters in the same column mean a significant difference at the 0.05 level.