. 2016 Jul 27;7:1117. doi: 10.3389/fpls.2016.01117

Table 2.

Concentrations (μg^-¹ FW) of total phytochelatin, citrate and malate in roots of 7-days-old Alfalfa plants grown under different growth conditions of Cd and Si.

Treatments	Phytochelatin	Citrate	Malate
Cd^-	1.54 ± 0.37^a	1.33 ± 0.17^a	1.24 ± 0.12^a
Cd⁺	1.91 ± 0.70^a	2.94 ± 0.73^b	3.95 ± 0.47^b
Cd⁺ Si⁺	1.86 ± 0.21^a	1.06 ± 0.08^a	0.85 ± 0.13^a
Cd^- Si⁺	1.91 ± 0.04^a	0.94 ± 0.05^a	1.99 ± 1.99^a

Different letters in each column indicate significant differences between mean ± SD of treatments (n = 3) at a P < 0.05 significance level.