Table 5.

Correlation coefficients of K, Mg, Na, Ca, Zn, Fe, Mn, Cu, phytic acid (PA) and grain weight (GW) among six rice cultivars

Feature	Correlation coefficient
	K	Mg	Na	Ca	Zn	Fe	Mn	Cu	PA	GW
K	1.000
Mg	0.801	1.000
Na	0.670	0.657	1.000
Ca	0.833*	0.403	0.270	1.000
Zn	−0.195	0.200	−0.210	−0.444	1.000
Fe	−0.216	−0.269	0.076	−0.304	0.490	1.000
Mn	0.724	0.621	0.699	0.597	−0.611	−0.562	1.000
Cu	−0.573	−0.759	−0.590	−0.112	−0.318	0.036	−0.236	1.000
PA	0.562	0.726	0.568	0.285	−0.339	−0.744	0.818*	−0.543	1.000
GW	−0.420	−0.133	0.316	−0.661	−0.209	−0.057	0.153	0.030	0.285	1.000

^*Correlation is significant at the 0.05 level (2-tailed)

^**Correlation is significant at the 0.01 level (2-tailed)