Assessment of the resistance of highly ornamental plants of autochthonous flora to increased concentrations of pollutants

  • H. G. Shutava
  • А.V. Bashilov
  • E.A. Sedun
  • A.A. Vaitsekhouskaya
  • M. Onete


Aim. The purpose of the work is to assess the resistance of highly decorative plants of the native flora to a high level of salinity and the content of zinc, lead and cadmium for landscaping urban and roadside areas. Methods. We used seed germination under laboratory conditions with soaking in solutions of sodium chloride and salts of zinc, lead and cadmium, as well as the method of in vitro cell selection to increase resistance to salinity of Verbascum nigrum L. Results. The resistance of 7 species of highly decorative plants, representatives of the autochthonous flora of Belarus, to increasing concentrations of lead, zinc and cadmium salts was assessed. Germination capacity, length and morphology of roots, length of seedlings during germination of seeds of Betonica officinalis L., Centaurea jacea L., Verbascum nigrum, Knautia arvensis (L.) Coult., Galium verum L., Anthemis tinctoria L., Anthemis arvensis L., Viscaria vulgaris Bernh., Achillea millefolium L. in the presence of sodium chloride are shown. It has been shown that the in vitro cell selection method is promising for the selection of resistant lines of Verbascum nigrum. Conclusions. The presence of lead, zinc and cadmium salts had a significant effect on the average length of the root, hypocotyl, and cotyledonous leaves, as well as the germination capacity of highly decorative species of autochthonous flora. The most resistant to salinity were yarrow (Achillea millefolium), brown knapweed (Centaurea jacea) and black mullein (Verbascum nigrum). Lines of Verbascum nigrum, capable of growing in vitro at a sodium chloride concentration of 5 g/L, were selected.

Keywords: salinity, heavy metals, seed germination, highly decorative species.


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