Metal Uptake, Growth Responses, and Chlorophyll Production of Wheat ( Triticum aestivum ) Exposed at Different Durations to Chelate-Amended Cadmium-Contaminated Soils
Year: 2016
Type: article
Abstract: Phytoextraction is gaining acceptance as a cost-effective and environmentally sound phytoremediation strategy for reducing toxic metal levels from contaminated soils. We hypothesized that the addition of synthetic chelates can increase the amount of bioavailable metal for root uptake, thereby improving the efficacy of phytoextraction. This study was conducted to evaluate the effects of Cadmium (Cd) and ethylenediaminetetraacetic (EDTA) on the growth, metal uptake, and chlorophyll (Chl) production in wheat plants. Wheat (Triticum aestivum L. cv TAM-109) seeds were planted in plastic tubes containing topsoil and peat (2:1, v: v) spiked with various levels (0, 250, 500 mg Cd/kg dry soil) of cadmium nitrate. After 30, 45, and 60 days of growth, plants were harvested. Results show that after 60 days, wheat biomass was greater at 100, 250, and 500 mg/kg of Cd-treated soil without the addition of EDTA as compared to plants grown in Cd-treated soil plus EDTA. Although Chl production generally decreased with increased exposure time and Cd concentration, we nonetheless observed Chl production to be higher during each harvesting period in plants exposed to Cd plus EDTA. Treatments with the highest Chl concentration occurred on day 30.
Source: World environment
Authors: Gloria Miller, Charles R. Davis, G. B. Begonia, Maria Begonia
Institution: Jackson State University
Language: English
Topic: Heavy metals in environment
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2310010711