Biologia Plantarum

, Volume 41, Issue 3, pp 469–473

Amelioration of lead and mercury effects on germination and rice seedling growth by antioxidants

  • A. Mishra
  • M.A. Choudhuri

DOI: 10.1023/A:1001871015773

Cite this article as:
Mishra, A. & Choudhuri, M. Biologia Plantarum (1998) 41: 469. doi:10.1023/A:1001871015773


Germination of two rice (Oryza sativa L.) cultivars (Ratna and IR 36) in the presence of 10 µM PbCl2 and 10 µM HgCl2 decreased germination percentage, germination index, shoot/root length, tolerance index and dry mass of shoots and roots. Mercury was more toxic than lead. Reduced glutathione (GSH), cysteine (Cys), ascorbic acid, and α-tocopherol alleviated the adverse effects of these metals on plants in the order GSH > Cys > ascorbic acid > α-tocopherol. The effects were more pronounced in tolerant cultivar IR 36 than in the relatively susceptible cultivar Ratna.

ascorbic acidcysteinegermination indexOryza sativareduced-glutathioneα-tocopheroltolerance index

Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • A. Mishra
    • 1
  • M.A. Choudhuri
    • 1
  1. 1.Plant Physiology and Biochemistry Laboratory, Department of BotanyUniversity of Burdwan, BurdwanBengalIndia