. 2010 Nov 29;107(2):285–292. doi: 10.1093/aob/mcq240

Table 1.

Growth parameters of Merwilla plumbea plants grown for 4 weeks in hydroponics

	Treatment
Growth parameter	Control	Cd1	Cd5
Root f. wt (g)	0·0904 ± 0·017^a	0·0534 ± 0·016^b	0·0483 ± 0·019^b
Root d. wt (g)	0·0051 ± 0·0009^a	0·0033 ± 0·0012^b	0·0026 ± 0·0008^b
Leaf f. wt (g)	0·49 ± 0·083^a	0·131 ± 0·032^b	0·1 ± 0·018^b
Leaf d. wt (g)	0·032 ± 0·0045^a	0·0127 ± 0·0009^b	0·0123 ± 0·026^b
Bulb f. wt (g)	0·134 ± 0·048^a	0·095 ± 0·029^a	0·011 ± 0·054^a
Bulb d. wt (g)	0·013 ± 0·0075^a	0·017 ± 0·0057^a	0·013 ± 0·0024^a
CRL (cm)	18·22 ± 3·45^a	10·62 ± 2·21^b	9·38 ± 0·81^b
ARL (cm)	4·742 ± 1·46^a	2·948 ± 0·46^b	2·818 ± 0·48^b

Three different treatments were used: control, half-strength Hoagland's solution; Cd1, half-strength Hoagland's solution containing 1 mg kg⁻¹ Cd; and Cd5, half-strength Hoagland's solution containing 5 mg kg⁻¹ Cd.

ARL, average root length; CRL, cumulative root length (means ± s.e., different letters represent significant differences at P < 0·05).