Table 2 The mineral content of the Yams (mg/kg).

Mineral	Qinfeng Yam	Iron Yam	Ziyu Yam	F	P
Ca	207.67 ± 0.82	744.67 ± 3.98^a	498.33 ± 5.430^ab	28274.10	0.001
Mg	247.00 ± 2.61	221.67 ± 3.33^a	151.67 ± 4.08^ab	1270.97	0.001
K	157.800 ± 41.10	173.98 ± 0.29	19.47 ± 0.48^ab	76.82	0.001
Fe	12.23 ± 0.19	14.43 ± 0.16^a	26.33 ± 0.23^ab	8929.14	0.001
P	10.60 ± 0.09	15.38 ± 0.08^a	7.87 ± 0.03^ab	17702.86	0.001
Mn	8.27 ± 0.03	6.75 ± 0.03^a	4.08 ± 0.03^ab	32711.38	0.001
Zn	14.28 ± 0.44	13.22 ± 0.15^a	0.00 ± 0.00^ab	5195.27	0.001
Cu	2.34 ± 0.03	6.29 ± 0.03^a	0.90 ± 0.00^ab	75472.64	0.001
Na	0.89 ± 0.00	4.52 ± 0.06^a	0.56 ± 0.00^ab	21065.79	0.001
Se	0.08 ± 0.12	0.03 ± 0.00	0.00 ± 0.00^b	2.32	0.133

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