Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2007 by Universidad Católica de Valparaíso -- Chile
Vol. 10 No. 3, Issue of August 15, 2007
 


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

1Means with different letter on the same column differed significantly (P ≤ 0.05).

Supported by UNESCO / MIRCEN network