. 2012 Nov 20;13(11):15321–15342. doi: 10.3390/ijms131115321

Table 1.

Impact of potassium levels on total phenolics, flavonoids and ascorbic acid production in different parts of L. pumila Benth.

Plant parts	Potassium levels (Kg K/ha)	Total phenolics (mg g⁻¹ gallic acid dry weight)	Total flavonoid (mg g⁻¹ rutin dry weight)	Ascorbic acid (mg g⁻¹ dry weight)
	0	1.22 ± 0.44 ^d	0.68 ± 0.05 ^d	0.030 ± 0.006 ^d
Leaves	90	1.40 ± 0.01 ^c	0.75 ± 0.23 ^c	0.047 ± 0.001 ^c
	180	1.65 ± 0.15 ^b	0.82 ± 0.12 ^b	0.062 ± 0.003 ^b
	270	1.82 ± 0.61 ^a	0.94 ± 0.25 ^a	0.083 ± 0.003 ^a
	0	0.62 ± 0.23 ^d	0.35 ± 0.15 ^c	0.018 ± 0.004 ^d
Stems	90	0.70 ± 0.44 ^c	0.42 ± 0.32 ^b	0.046 ± 0.005 ^c
	180	0.85 ± 0.24 ^b	0.59 ± 0.08 ^a	0.057 ± 0.008 ^b
	270	0.96 ± 0.34 ^a	0.61 ± 0.14 ^a	0.074 ± 0.004 ^a
	0	0.40 ± 0.11 ^d	0.18 ± 0.05 ^c	0.010 ± 0.003 ^d
Roots	90	0.42 ± 0.12 ^c	0.21 ± 0.31 ^b	0.040 ± 0.002 ^c
	180	0.58 ± 0.05 ^b	0.25 ± 0.13 ^b	0.051 ± 0.001 ^b
	270	0.62 ± 0.21 ^a	0.41 ± 0.03 ^a	0.073 ± 0.001 ^a

All analyses are mean ± standard error of mean (SEM). N = 40. Means not sharing a common letter within a column were significantly different at p ≤ 0.05.