. 2020 Jul 10;20:327. doi: 10.1186/s12870-020-02538-6

Table 2.

Pearson correlation coefficients between leaf element concentrations and final total biomass, SPAD values and relative growth rate (RGR) for three Adiantum species

	Leaf element concentration (mg g^− 1)
	Ca	Mg	Fe	Al	P	K
A. flabellulatum
Final total biomass (g)	−0.43	− 0.48^*	− 0.34	− 0.35	− 0.37	0.53^*
SPAD	− 0.16	− 0.24	− 0.32	− 0.36	− 0.27	0.40
RGR (mg g^− 1 d^− 1)	− 0.48^*	− 0.55^*	−0.38	− 0.40	−0.40	0.67^**
A. capillus-veneris f. dissectum
Final total biomass (g)	−0.42	0.07	−0.27	−0.29	0.16	0.09
SPAD	−0.67^**	−0.12	− 0.67^**	−0.51^*	0.66^**	0.66^**
RGR (mg g⁻¹ d^− 1)	− 0.67^**	0.10	− 0.67^**	− 0.52^*	0.66^**	0.49^*
A. malesianum
Final total biomass (g)	−0.43	0.52^*	−0.28	−0.36	0.50^*	0.53^*
SPAD	−0.03	0.67^**	0.12	−0.32	0.33	0.32
RGR (mg g⁻¹ d⁻¹)	−0.41	0.43	−0.32	−0.35	0.71^**	0.63^**

^{*, **} indicate coefficient significant at P < 0.05 and 0.01, respectively (n = 21)