Water, Air, and Soil Pollution

, Volume 27, Issue 1–2, pp 15–18 | Cite as

Heavy metal pollutant tolerance of Azolla Pinnata

  • Amar Sarkar
  • Sasadhar Jana


The effects of Hg, As, Pb, Cu, Cd, and Cr (1, 2, and 5 mg L−1 each) on Azolla pinnata R. Br. were analyzed. The treatments (2 and 5 mg L−1) of the heavy metal pollutants decreased Hill activity, chlorophyll, protein and dry wt, and increased tissue permeability over control values. The effects were most pronounced with the treatment of 5 mg L−1. The harmful effects of the metals were, in general, found by the treatments in the order: Cd 〉 Hg 〉 Cu 〉 As 〉 Pb 〉 Cr. There was no significant change in these parameters at 1 mg L−1 of the metals over control. Thus Azolla pinnata shows tolerance to the heavy metals tested up to 1 mg L−1 each.


Permeability Heavy Metal Chlorophyll Harmful Effect Metal Pollutant 
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Copyright information

© D. Reidel Publishing Company 1986

Authors and Affiliations

  • Amar Sarkar
    • 1
  • Sasadhar Jana
    • 1
  1. 1.Botany DepartmentBurdwan University, BurdwanWest BengalIndia

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