Table 4 Arsenic in soils and its accumulation in plants—pot experiment. Mean data of 3 replicates.

Soil	A. capillaris- form	As in soil, mg kg⁻¹		Dry mass of shoots g /pot	As in plants, mg kg⁻¹		BAF
Soil	A. capillaris- form	Total	Extracted with 1 M NH₄NO₃	Dry mass of shoots g /pot	Roots	Shoots	Roots	Shoots
S1-Pot	Breeding A.c. form D2	19,600	3.61	0	No growth	n.d	n.d
S2-Pot		4020	7.32	0.39	1940	113	0.483	0.028
S3-Pot		133	0.19	1.98	106	24.5	0.797	0.184
S4-Pot		394	0.18	1.83	156	21.2	0.396	0.054
Spiked soil	Wild A.c. form D1	50	0.75	0.64	406	249	8.12	4.98
		100	0.92	0.40	792	340	7.92	3.40
		200	1.90	0.11	3050 ? ^a)	2380 ?	15.3 ?	11.9 ?
	Breeding A.c. form D2	50	0.72	0.72	390	215	7.80	4.30
		100	0.98	0.49	450	325	4.50	3.25
		200	2.01	0.18	n.d	1220 ?	9.10 ?	6.10 ?

^aQuestion marks indicate the data obtained from only one of three replicates, therefore the data should be treated as informative. At total As concentrations 200 mg kg⁻¹, plants grew in pots very poorly. Root biomass of A.c. cultivar was not large enough for the analysis of As concentration, therefore it was not determined (n.d.)

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