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Table 1 Effects of lead heavy metal exposure on growth parameters of E. crassipes seedlings

From: Lead heavy metal toxicity induced changes on growth and antioxidative enzymes level in water hyacinths [Eichhornia crassipes (Mart.)]

Pb Conc. (mg/L) Root length (cm) Shoot length (cm) Growth rate inhibition (GRI)%
Root Shoot
0.0 22.33 ± 0.81a* 23.83 ± 2.23a* 0.0 0.0
100 20.41 ± 1.67b 20.25 ± 0.83b 8.6 15.03
200 20.16 ± 0.76b 19.50 ± 0.56b 9.72 18.18
400 18.41 ± 0.91c 17.75 ± 1.38c 17.56 25.52
600 15.75 ± 1.26d 17.00 ± 0.76c 29.38 28.67
800 13.25 ± 1.25d 16.66 ± 1.08d 40.67 30.09
1000 09.83 ± 0.79e 13.25 ± 0.99e 55.98 44.34
  1. *Values are expressed as mean ± SE (n = 3), different letters in each column indicate significant difference at p < 0.05 levels.