- International Journal of Agriculture Forestry and Life Sciences
- Vol: 5 Issue: 2
- An Investigation on the Effect of Nano-ZnO Application on Cadmium Phytoextraction by Safflower
An Investigation on the Effect of Nano-ZnO Application on Cadmium Phytoextraction by Safflower
Authors : Fatih Ahmet Yentür, Hatice Dağhan
Pages : 154-162
View : 26 | Download : 10
Publication Date : 2021-12-28
Article Type : Research
Abstract :Nowadays, soils contaminated with heavy metals are one of the biggest environmental pollution problems in the world. The phytoextraction method is the most effective and well-known plant remediation method that can be used to clean up agricultural soils contaminated with heavy metals. Nanoparticle applications have recently been introduced to remove pollutants, promote plant growth and improve pollutant phyto-availability to improve the efficiency/effectiveness of this method. In this study, it is aimed to use phytoextraction method and nanomaterial together for the cleaning of cadmium (Cd) contaminated growth media and to investigate the effects of nanomaterial on plants. For this purpose, a hydroponic culture was planned and ZnO-NP, a nanomaterial, which was determined by OECD as a priority, was used for the experiment. As plant; drought-resistant, without climatic selectivity, can be grown in different ecological conditions, safflower (Carthamus tinctorius) (Dinçer variety) was selected. Safflower seeds were germinated in a mixture of peat-perlite (1:1), and after 2-3 leaves, they were transferred to the Hoagland nutrient solution. In order to see the effects of Cd × ZnO-NP applications, morphological observations of the plants were made and chlorophyll contents were measured before the harvest by applying ZnO-NP and (0-3-6 mg / L) Cd in increasing doses (0-5-10 mg / L) to the nutrient solution. Plants were harvested from plants grown for 20 days. Green parts and root dry weights of plants, Zn, and Cd concentrations were determined. The results showed that Cd accumulation of the plant increased due to increasing doses of ZnO-NP. In the green part of the safflower plant, Cd has accumulated 5.2 to 8.7 times more Cd than the hyperaccumulation critical threshold value (100 µg / g). The research showed that the Cd phytoremediation potential of the safflower plant was high.Keywords : Phytoextraction, cadmium, ZnO nanoparticle, safflower, hydroponic culture.