Determining the Impact of the AM-Mycorrhizosphere on “Dwarf” Sunflower Zn Uptake and Soil-Zn Bioavailability

Table 2

Plant growth parameters.

Soil-Zn (mg kg^−1 DS)	Sphere treatments	Dry mass (g)				Leaves		Shoot height (cm)
		Flowers	Shoots	Roots-CC†	Roots-PC‡	Total no.	% Chlorotic
0	Hyphosphere	0.86; (0.09)^b	1.57; (0.43)	0.77; (0.03)^b	0; (0.0)^b	14.5; (1.19)	0.76; (0.51)^c	16.3; (1.84)^b
	Mycorrhizosphere	1.65; (0.04)^a	1.98; (0.51)	1.05; (0.21)^a	0.19; (0.07)^a	16.25; (0.25)	1.52; (0.78)^c	18.3; (2.24)^ab
	Rhizosphere	1.76; (0.19)^a	2.01; (0.33)	0.98; (0.12)^a	0.20; (0.04)^a	18.5; (2.21)	0.00; (0.00)^d	23.5; (2.9)^a
50	Hyphosphere	0.82; (0.14)^b	1.68; (0.11)	0.89; (0.06)^ab	0; (0.0)^b	14.3; (0.85)	3.13; (2.00)^b	17.9; (1.07)^b
	Mycorrhizosphere	1.58; (0.12)^a	2.15; (0.32)	1.00; (0.07)^a	0.19; (0.03)^a	17.0; (1.14)	4.75; (1.88)^b	21.89; (1.88)^ab
	Rhizosphere	1.76; (0.20)^a	2.24; (0.34)	0.96; (0.04)^a	0.24; (0.06)^a	17.5; (2.30)	8.13; (4.18)^b	23.75; (2.26)^a
200	Hyphosphere	1.01; (0.12)^b	1.79; (0.28)	0.68; (0.09)^b	0; (0.0)^b	13.8; (0.62)	3.13; (2.00)^b	16.13; (1.98)^b
	Mycorrhizosphere	1.35; (0.33)^a	2.23; (0.17)	0.94; (0.17)^a	0.18; (0.02)^a	16.5; (0.64)	27.1; (6.60)^a	19.1; (2.56)^ab
	Rhizosphere	1.50; (0.17)^a	2.08; (0.09)	0.93; (0.04)^a	0.18; (0.04)^a	17.0; (2.12)	40.1; (11.6)^a	22.0; (2.38)^a
400	Hyphosphere	0.74; (0.08)^b	1.45; (0.16)	0.61; (0.11)^b	0; (0.0)^b	13.5; (1.83)	7.60; (4.63)^b	15.5 (1.04)^b
	Mycorrhizosphere	1.51; (0.29)^a	2.06; (0.15)	0.72; (0.06)^b	0.24; (0.05)^a	13.8; (1.03)	36.0; (10.7)^a	17.8; (1.53)^b
	Rhizosphere	1.41; (0.31)^a	1.76; (0.26)	0.68; (0.10)^b	0.19; (0.02)^a	14.5; (0.96)	45.6; (10.9)^a	21.75; (2.67)^a
𝐹-values and levels of significance
	Soil-Zn (Zn)	0.63^ns	1.31^ns	3.63*	0.26^ns	2.05^ns	78.5***	1.41^ns
	Sphere treatments (S)	16.4***	0.14^ns	3.33*	37.6***	1.42^ns	63.2***	3.5*
	ZnxS	0.73^ns	1.27^ns	0.85^ns	0.95^ns	0.70^ns	18.3***	0.54^ns
	Block	1.28^ns	2.04^ns	0.85^ns	0.11^ns	0.58^ns	0.35^ns	1.41^ns

Means (𝑛=4) and SE (inside parentheses) are shown.
Shared letters within each column designate treatments that are not significantly different according to Bonferonni and Scheffé mean comparison tests.
†Central Compartment; ‡Peripheral Compartment.
“ns” nonsignificant; ^∗𝑃<.05; ^∗∗𝑃<.01; ^∗∗∗𝑃<.001.