Table 3.

Root growth performance of sunchoke treated with AMF and PSB under well-watered (WW) and drought (DS) conditions, in the presence and absence or RP, evaluated at 60 DAT.

Water conditions	Treatments	Root length(cm)	Root surfaceArea (cm2)	Root diameter(mm)	Root volume(cm3)	Specific root length(m/g)	Root tissue density (g/cm3)
Well- watered	Control	2363.0 d	454.9 fg	0.34 ef	5.30 fgh	16.098 c-f	0.6843 ab
	AMF	14510.0 a	1593.2 a	0.39 a-d	16.17 a	23.22 abc	0.372 d
	PSB	3943.0 d	791.0 de	0.35 def	6.90 ef	27.993 a	0.4898 bcd
	AMF+PSB	11079.0 bc	1314.7 abc	0.39 a-d	12.97 bc	22.553 a-d	0.379 d
	RP	3956.0 d	753.9 def	0.34 f	6.46 fg	16.625 b-f	0.7153 ab
	AMF+RP	13604.0 ab	1188.1 bc	0.41 ab	12.25 bcd	24.82 a	0.3123 d
	PSB+RP	1820.0 d	780.4 de	0.37 b-f	6.00 fgh	14.155 ef	0.6825 ab
	AMF+PSB+RP	14180.0 a	1405.1 ab	0.42 a	14.63ab	23.595 ab	0.3188 d
Drought	Control	2374.0 d	576.7 efg	0.37 b-f	5.49 fgh	15.638 def	0.6415 abc
	AMF	8665.0 c	1019.8 cd	0.40 abc	10.20 cd	21.865 a-d	0.3695 d
	PSB	3475.0 d	595.4 efg	0.40 abc	3.70 gh	26.615 a	0.3042 d
	AMF+PSB	10183.0 c	1120.3 bc	0.39 a-d	10.39 cd	21.365 a-e	0.4033 d
	RP	2315.0 d	371.5 g	0.36 c-f	3.09 h	13.355 f	0.8305 a
	AMF+RP	10519.0 c	1196.7 bc	0.39 a-d	11.74 bcd	21.55 a-d	0.4013 d
	PSB+RP	1427.0 d	444.8 g	0.38 a-e	3.50 h	13.978 f	0.67 ab
	AMF+PSB+RP	8276.0 c	1012.1 cd	0.38 a-f	9.64 de	21.517 a-d	0.4147 cd
Four-way ANOVA
	AMF	**	**	**	**	**	**
	PSB	ns	ns	ns	ns	ns	*
	water	**	**	ns	**	ns	ns
	RP	ns	ns	ns	ns	ns	*
	AMF x PSB	ns	ns	ns	ns	*	*
	AMF x water	**	ns	**	ns	ns	ns
	AMF x RP	ns	ns	ns	ns	**	*
	PSB x water	ns	ns	ns	ns	ns	ns
	PSB x RP	ns	ns	ns	ns	*	ns
	Water x RP	ns	ns	ns	ns	ns	ns
	AMF x PSB x water	ns	ns	ns	ns	ns	ns
	AMF x PSB x RP	ns	ns	ns	ns	*	ns
	AMF x water x RP	ns	*	ns	ns	ns	ns
	PSB x water x RP	ns	ns	ns	ns	ns	ns
	AMF x PSB x water x RP	*	*	ns	**	ns	ns

**, Significant difference at P< 0.01; *, Significant difference at P< 0.05; ns, non-significant difference. Data are the means of three replications. Values with similar lowercase letters in each column are not significantly different according to LSD at P< 0.05.