Effects of Cadmium on Growth and the Uptake of Cadmium and Micronutrients by Tobacco (nicotiana Tabacum L.) Cultivars
Year: 2019
Type: article
Abstract: Tobacco (Nicotiana tabacum L.) can accumulate higher concentrations of cadmium (Cd).However, genotypic differences of tobacco cultivars in Cd uptake and their responses to Cd toxicity have not been thoroughly investigated.This study was conducted to determine the resistance of four tobacco cultivars to Cd toxicity under greenhouse conditions.Four doses of Cd (0, 5, 10 and 20 mg kg -1 soil) were used to test the resistance of tobacco cultivars.Increasing the Cd applications significantly (P < 0.01) decreased the shoot dry matter yields of genotypes, while shoot Cd concentration and content significantly (P < 0.01) increased.The highest decrease in dry matter under the highest Cd (Cd20) treatment was in Özbaş (58.5% reduction), Birlik/124 (52.4% reduction) and Canik190/5 (51.1% reduction) cultivars, while the lowest decrease was in Xanthi/81 (44.6% reduction) cultivar.The amount of Cd removed from soil was significantly different among the tobacco cultivars.The highest Cd uptake was obtained in Cd20, while the lowest was in Xanthi/81 (395.2 µg Cd plant -1 ) and Canik190/5 (232.6 µg Cd plant -1 ) cultivars, respectively.The results revealed that Canik190/5 cultivar removes lower Cd compared to the other cultivars, whereas Cd uptake of Xanthi/81 cultivar is higher, thus is considered more resistant to Cd toxicity than other cultivars.
Author: A KINAY
Institution: Tokat Gaziosmanpaşa Üniversitesi
Language: English
Topic: Heavy metals in environment
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W3015283778