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Responses of Two Barley Subspecies to In vitro-Induced Heavy Metal Stress: Seeds Germination, Seedlings Growth and Cytotoxicity Assay Cover

Responses of Two Barley Subspecies to In vitro-Induced Heavy Metal Stress: Seeds Germination, Seedlings Growth and Cytotoxicity Assay

Open Access
|Oct 2019

Abstract

In this work three heavy metals: cadmium (as CdSO4), cobalt (as CoCl2) and zinc (as ZnSO4), were used to determine and compare their toxicity towards two subspecies of barley (Hordeum vulgare subsp. vulgare L. and Hordeum vulgare subsp. distichum L.), focusing on seeds germination, seedlings growth, and cytological parameters. The results indicate that the effect of these heavy metals depends on the metal kind, the metal concentrations and the plant subspecies. Generally, in the case of H. vulgare, the heavy metal salts understudy did not influence significantly seed germination and seedling growth parameters. However, these metal salts influence significantly these parameters for H. distichum. The cytological test showed significant decrease (p < 0.05) in the mitotic index among the increase of the heavy metal concentrations when evaluated with the control for H. vulgare and H. distichum. Consequently, H. vulgare seemed to be more tolerant of the increase of the three heavy metals concentrations than H. distichum.

DOI: https://doi.org/10.2478/agri-2019-0011 | Journal eISSN: 1338-4376 | Journal ISSN: 0551-3677
Language: English
Page range: 107 - 118
Submitted on: May 29, 2019
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Accepted on: Sep 12, 2019
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Published on: Oct 18, 2019
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2019 Mohamed Nouri, Taoufik El Rasafi, Abdelmajid Haddioui, published by National Agricultural and Food Centre
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.