Green Synthesized Zinc-Glycine Chelate Enhances Antioxidant Protection of Pistachio under Different Soil Boron Levels

Figures & data

Table 1. Some physic-chemical properties of the soil used in the experiment.

Field capacity	Permanent wilting point					NH4OAC-extractable K
(%, dry wt basis)		pH paste	ECe(dS m^–1)	CEC(Cmc kg^–1)	NaHCO3– extractable P	(mg kg^–1 soil)	DTPA-extractable Zn
22	9	7.9	1.3	11	13	59	1.5

Table 2. Analytical data for zinc-glycine chelate.

	% Found (Calc.)
LogKst	Zn	N	H	C	Formula weight
9.8	30.51 (30.63)	12.98 (13.12)	3.71 (3.78)	22.59 (22.50)	213.53

Table 3. Picked out IR bands (cm^–1) of zinc-glycine [Zn(Gly)₂] chelate.

δ (C=O)	v (C‒O)	v (C=O)	v (NH2)
728	1400	1602	3311, 3279

Figure 1. The effects of Zn-Gly application and different soil Boron concentrations on electrolyte leakage in pistachio leaf. *Mean separation by THSD at P ≤ 0.05.

Figure 2. The effects of Zn-Gly application and different soil Boron concentrations on ascorbic acid content in pistachio leaf. *Mean separation by THSD at P ≤ 0.05.

Figure 3. The effects of Zn-Gly application and different soil Boron concentrations on (A) hydrogen peroxide (H₂O₂), (B) malondialdehyde (MDA), and (C) phenolics contents in pistachio leaf. *Mean separation by THSD at P ≤ 0.05.

Figure 4. The correlations between electrolyte leakage and concentration of malondialdehyde and H₂O₂ in pistachio leaf.

Figure 5. The effects of Zn-Gly application and different soil Boron concentrations on lypoxygenase (LOX) activity in pistachio leaf. *Mean separation by THSD at P ≤ 0.05.

Figure 6. The effects of Zn-Gly application and different soil Boron concentrations on (A) superoxide dismutase (SOD), (B) catalase (CAT), and (C) ascorbate peroxidase (APX) activity in pistachio leaf. *Mean separation by THSD at P ≤ 0.05.