. 2023 Jun 9;11:e15262. doi: 10.7717/peerj.15262

Table 6. Mean nutrient contents (mean ± standard error) of potato accessions in year × location, year × color, and location × color interactions.

	K	P	Ca	Mg	Fe	Zn	Cu	Mn
	g kg⁻¹				mg kg⁻¹
Year × Location
2013xNik	28.47 ± 0.61^b	2.90 ± 0.05^d	0.33 ± 0.01^bc	1.01 ± 0.01^c	18.56 ± 0.35^e	30.86 ± 0.56^a	7.86 ± 0.11^b	6.01 ± 0.08^c
2013xKz	34.72 ± 0.50^a	3.32 ± 0.06^b	0.32 ± 0.01^bc	1.20 ± 0.01^b	16.60 ± 0.38^f	23.51 ± 0.48^c	7.85 ± 0.12^b	6.55 ± 0.08^b
2013xArt	22.66 ± 029^c	3.28 ± 0.03^b	0.31 ± 0.01^c	1.35 ± 0.02^a	20.29 ± 0.37^d	23.88 ± 0.37^bc	7.11 ± 0.11^c	6.91 ± 0.09^b
2014xNik	13.62 ± 0.31^e	2.91 ± 0.03^d	0.33 ± 0.01^b	0.96 ± 0.02^d	23.96 ± 0.60^c	19.13 ± 0.52^d	7.67 ± 0.17^b	6.95 ± 0.10^b
2014xKz	13.77 ± 0.20^e	3.10 ± 0.04^c	0.32 ± 0.01^bc	1.20 ± 0.03^b	39.84 ± 0.61^a	25.76 ± 0.37^b	8.65 ± 010^a	7.72 ± 0.09^a
2014xArt	18.57 ± 0.31^d	3.52 ± 0.05^a	0.39 ± 0.01^a	1.33 ± 0.02^a	37.60 ± 0.71^b	32.61 ± 0.58^a	8.76 ± 0.13^a	7.69 ± 0.12^a
P value	0.001	0.000	0.001	0.146	0.001	0.001	0.001	0.151
LSD	1.063	0.125	0.018	0.041	1.416	1.324	0.339	0.258
Year × Color
2013xLY	28.26 ± 0.51^b	3.10 ± 0.04^bc	0.32 ± 0.01^c	1.16 ± 0.01^b	18.70 ± 0.34^d	26.41 ± 0.48^bc	7.62 ± 0.10^cd	6.45 ± 0.08^c
2013xDY	27.65 ± 0.62^b	3.24 ± 0.06^ab	0.33 ± 0.01^c	1.19 ± 0.02^ab	18.31 ± 0.41^d	24.70 ± 0.47^cd	7.58 ± 0.13^cd	6.43 ± 0.09^c
2013xC	32.05 ± 0.97^a	3.30 ± 0.07^a	0.30 ± 0.01^d	1.21 ± 0.02^ab	19.18 ± 0.60^d	28.27 ± 0.87^a	7.91 ± 0.20^bc	6.63 ± 0.13^c
2013xW	27.92 ± 0.89^b	3.10 ± 0.07^bc	0.32 ± 0.01^cd	1.23 ± 0.03^a	18.07 ± 0.59^d	25.25 ± 0.84^bcd	7.32 ± 0.16^d	6.60 ± 0.14^c
2014xLY	15.20 ± 0.27^c	3.13 ± 0.03^bc	0.35 ± 0.01^ab	1.18 ± 0.02^b	33.12 ± 0.63^b	25.65 ± 0.49^bc	8.32 ± 0.11^ab	7.48 ± 0.08^a
2014xDY	15.48 ± 0.42^c	3.32 ± 0.06^a	0.36 ± 0.01^a	1.18 ± 0.03^ab	36.37 ± 1.02^a	26.96 ± 0.87^ab	8.53 ± 0.15^a	7.43 ± 0.12^a
2014xC	15.57 ± 0.40^c	3.18 ± 0.05^abc	0.33 ± 0.01^bc	1.18 ± 0.03^ab	33.73 ± 1.27^b	26.25 ± 0.82^bc	8.65 ± 0.21^a	7.79 ± 0.16^a
2014xW	15.05 ± 0.42^c	3.04 ± 0.08^c	0.34 ± 0.01^abc	1.11 ± 0.03^c	30.43 ± 1.05^c	23.73 ± 0.86^d	7.81 ± 0.28^cd	7.07 ± 0.21^b
P value	0.000	0.342	0.900	0.006	0.000	0.001	0.563	0.075
LSD	0.914	0.107	0.015	0.035	1.218	1.138	0.292	0.222
Location × Color
NikxLY	20.94 ± 0.93^cd	2.85 ± 0.04^f	0.33 ± 0.01^b–e	0.99 ± 0.01^e	22.26 ± 0.60^e	25.81 ± 0.74^bc	7.79 ± 0.14^bcd	6.51 ± 0.10^d
NilxDY	19.09 ± 0.82^e	3.01 ± 0.07^ef	0.35 ± 0.01^abc	0.96 ± 0.02^e	21.82 ± 0.71^ef	22.73 ± 0.76^de	7.84 ± 0.62^bcd	6.46 ± 0.14^d
NikxC	24.42 ± 1.63^b	2.95 ± 0.08^f	0.30 ± 0.01^e	1.02 ± 0.03^e	20.02 ± 0.80^fg	27.32 ± 1.40^ab	7.73 ± 0.27^bcd	6.53 ± 0.19^d
NikxW	21.35 ± 1.39^cd	2.87 ± 0.09^f	0.32 ± 0.01^cde	0.98 ± 0.03^e	19.28 ± 0.79^g	24.08 ± 1.25^cde	7.58 ± 0.29^cd	6.40 ± 0.15^d
KzxLY	24.15 ± 0.87^b	3.19 ± 0.05^cd	0.33 ± 0.01^b–e	1.19 ± 0.01^d	27.17 ± 0.97^cd	24.70 ± 0.45^cd	8.21 ± 0.12^bc	7.12 ± 0.11^bc
KzxDY	24.01 ± 1.16^b	3.19 ± 0.08^cde	0.32 ± 0.01^cde	1.18 ± 0.02^d	29.28 ± 1.45^ab	25.37 ± 0.62^bc	8.10 ± 0.15^bc	6.98 ± 0.12^c
KzxC	26.46 ± 1.64^a	3.47 ± 0.07^ab	0.31 ± 0.01^de	1.25 ± 0.02^cd	28.97 ± 1.87^abc	25.29 ± 0.87^bc	9.16 ± 0.21^a	7.50 ± 0.16^ab
KzxW	22.62 ± 1.42^bc	3.04 ± 0.08^def	0.31 ± 0.01^de	1.21 ± 0.03^d	27.90 ± 1.56^bcd	22.19 ± 0.74^e	7.68 ± 0.22^bcd	7.08 ± 0.22^bc
ArtxLY	20.17 ± 0.36^de	3.32 ± 0.04^bc	0.34 ± 0.01^a–d	1.31 ± 0.02^bc	28.30 ± 0.79^bc	27.53 ± 0.54^ab	7.91 ± 0.12^bcd	7.26 ± 0.10^abc
ArtxDY	21.45 ± 0.42^cd	3.64 ± 0.07^a	0.37 ± 0.01^a	1.40 ± 0.02^a	30.93 ± 1.40^a	29.45 ± 1.03^a	8.24 ± 0.18^b	7.35 ± 0.14^abc
ArtxC	20.56 ± 0.55^cde	3.23 ± 0.05^bc	0.33 ± 0.01^cde	1.33 ± 0.03^b	30.36 ± 1.40^ab	29.17 ± 0.68^a	7.96 ± 0.24^bcd	7.60 ± 0.20^a
ArtxW	20.49 ± 0.73^cde	3.31 ± 0.09^bc	0.36 ± 0.01^ab	1.32 ± 0.04^bc	25.57 ± 1.29^d	27.19 ± 0.98^ab	7.42 ± 0.32^d	7.03 ± 0.27^c
P value	0.001	0.002	0.109	0.010	0.004	0.000	0.012	0.609
LSD	1.117	0.131	0.018	0.043	1.488	1.391	0.357	0.271

Notes.

Means followed by different letters are significantly different by each other P < 0.05. LSD is at 0.05 significance level.

Locations: N: Niksar, K:Kazova, A:Artova, Colors: LY: Light yellow; DY: Dark yellow; C: Cream; W: White