Effects of Nanoparticle Hydroxyapatite on Growth and Antioxidant System in Pakchoi (Brassica chinensis L.) from Cadmium-Contaminated Soil

Table 3

Concentration of Cd in pakchoi (Brassica chinensis L.) grown in Cd contaminated soil in pot culture receiving nHAP amendments (mg·kg⁻¹, dry weigh).

nHAP treatment level; (mg·kg^−1)	Cd treatment level (T0); 0 mg·kg^−1		Cd treatment level (T1); 5 mg·kg^−1		Cd treatment level (T2); 10 mg·kg^−1
	Shoot	Root	Shoot	Root	Shoot	Root
0.0	0.33±0.02^a	0.58±0.03^a	18.35±0.58^a	24.87±1.06^a	30.45±1.71^a	41.96±2.85^a
5.0	0.21±0.01^b	0.45±0.01^b	17.08±0.73^b	23.80±2.44^a	22.19±1.38^b	31.26±2.46^b
10.0	0.24±0.02^b	0.42±0.02^b	14.97±0.44^c	19.44±1.63^b	16.99±0.89^c	19.58±0.97^c
20.0	0.25±0.04^b	0.41±0.02^b	7.55±0.36^d	14.39±0.48^c	14.93±0.63^d	17.35±1.22^cd
30.0	0.19±0.03^c	0.44±0.03^b	6.12±0.51^e	10.86±0.57^d	11.46±0.69^e	14.52±0.73^d

Mean values denoted by the same letter in a column do not differ significantly according to the Duncan test.