Table 1. Uptake of Pb, Cr and Mn by in vitro root cultures of Thypha latifolia and Scirpus americanus.

Metal

Time (days)

T. latifolia

S. americanus

Dry weight (mg)¹

Uptake (%)

Dry weight (mg)¹

Uptake (%)

Pb(II)

0

6.51 ± 1.4 a

50.62

3.11

55.75

2

8.23 ± 1.4 a

89.66

48.35

96.72

4

7.92 ± 0.9 a

96.76

57.86

100.00

6

6.50 ± 1.1 a

97.53

58.24

100.00

8

7.14 ± 0.7 a

95.37

57.26

100.00

Cr(III)

0

5.78 ± 1.3 a

33.97

39.33

47.25

2

6.71 ± 1.3 a

87.45

40.33

86.59

4

6.30 ± 1.3 a

90.64

44.8

88.48

6

6.61 ± 1.7 a

90.89

46.15

92.95

8

6.86 ± 1.9 a

92.89

52.78

90.04

Mn(II)

0

6.05 ± 1.1 a

9.17

171.2

4.56

2

7.36 ± 2.0 a

16.00

188.38

39.00

4

7.46 ± 2.5 a

64.67

191.66

76.89

6

6.93 ± 2.2 a

70.89

204.91

89.00

8

6.84 ± 2.3 a

71.00

202.82

100.00