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Kamali N, Saberi M, Sadeghipour A, Tarnian F. Effect of Different Concentrations of Titanium Dioxide Nanoparticles on Germination and Early Growth of Five Desert Plant Species. ECOPERSIA 2021; 9 (1) :53-59
URL: http://ecopersia.modares.ac.ir/article-24-38105-en.html
1- Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
2- Faculty of Water and Soil, University of Zabol, Zabol, Iran
3- Desert Studies Faculty, Semnan University, Semnan, Iran , a.sadeghipour@semnan.ac.ir
4- Department of Range and Watershed Management, Faculty of Agriculture and Natural Resources, Lorestan University, Lorestan, Iran
Abstract:   (1997 Views)
Aims: Studying the effects of nanoparticles on living organisms seems to be necessary, especially in plants as the first trophic level. Thus the phytotoxicity of different concentrations of nano-TiO2 on five desert plant species was investigated in the present study.
Materials & Methods: The phytotoxicity of different concentrations (0, 10, 100, 500, 1500mgl-1) of nano-TiO2 on five desert plant species of Halothamnus glaucus Botsch, Haloxylon aphyllum L., Nitraria schoberi L., Zygophyllum eurypterum Boiss. & Buhse, Halocnemum strobilaceum were investigated using seed germination percentage, radicle, and plumule elongation measurement. Experiments were conducted based on a completely randomized design with four replications.
Findings: Outcomes of the study demonstrated that the application of nano-TiO2 had no adverse effect on germination at low concentrations (up to 500mgl-1), it also increased the germination of H. aphyllum (72 to 88%). The concentration of 1500mgl-1 had a negative effect on germination and radicle growth of three species of N. schoberi (decrease in germination from 32 to 20% and radicle length from 13.85 to 10.68cm), H. aphyllum (decrease in germination from 72 to 44% and radicle length from 6.105 to 4.03cm).
Conclusion: Generally, in most plants, low concentrations of nano-Tio2 did not significantly affect germination and seedling growth, but in high concentrations (1500mgl-1) due to toxicity effect, germination and seedling growth were reduced. Therefore, in using nanoparticles, attention to dosage, which is useful and not causes toxicity, is significant.
Full-Text [PDF 713 kb]   (964 Downloads)    
Article Type: Original Research | Subject: Rangeland Ecosystems
Received: 2019/11/7 | Accepted: 2020/03/20 | Published: 2020/10/24
* Corresponding Author Address: Desert Studies Faculty, Semnan University, Semnan, Iran

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