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The effects of heavy metals on seed germination and growth of the plant Brassica nigra L.

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Author Affiliations

  • 1Department of Botany, Bankura University, Bankura, West Bengal, India
  • 2Department of Chemistry, Ramananda College, Bishnupur, Bankura, West Bengal, India
  • 3Department of Botany, Ramananda College, Bishnupur, Bankura, West Bengal, India

Int. Res. J. Biological Sci., Volume 13, Issue (2), Pages 16-20, May,10 (2024)

Abstract

Toxicity of heavy metals is the major abiotic stress causing harmful effects on seed germination and plant growth. The aim of this present study is to reveal the effects of the heavy metals Zn and Pb on germination and growth behaviour of Brassica nigra L.. Different concentrations of Zn and Pb were used during experiment to understand their effects on seed germination as well as plant growth behaviour. Shoot length and root length of plants, viability of seeds decreased with the increased concentration of those heavy metals. In higher concentrations the seed germination and plant growth were significantly affected by Zn and Pb. Although the lower concentration of Zn helps to perform various important physiological functions such as promotion of the shoot growth but higher doses of Zn may be fatal. Pb can strongly inhibits seed germination, plant growth, seedling development and chlorophyll content with its higher concentrations.

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