Identification of wheat (Triticum aestivum L.) genotypes for food safety on two different cadmium contaminated soils

• Published in: Environmental science and pollution research international Vol. 27; no. 8; pp. 7943 - 7956
• Main Authors: Lu, Min, Cao, Xuerui, Pan, Jianqing, Li, Tingqiang, Khan, Muhammad Bilal, Gurajala, Hanumanth Kumar, He, Zhenli, Yang, Xiaoe
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-03-2020; Springer Nature B.V
• Subjects: Accumulation; Agricultural production; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Cadmium; Cadmium - analysis; Cadmium - chemistry; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental science; Field tests; Food; Food contamination; Food Safety; Food supply; Genotype; Genotypes; Grain; Human populations; Humans; Phytoremediation; Research Article; Soil; Soil contamination; Soil Pollutants; Soil pollution; Soil types; Soils; Straw; Translocation; Triticum - chemistry; Triticum aestivum; Waste Water Technology; Water Management; Water Pollution Control; Wheat; Cadmium; Food safety; Contaminated soils; Wheat; Genotypic variations; Phytoremediation
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-019-07261-w

Over the last decade, human population has been facing great challenges in ensuring appropriate supply of food free from cadmium (Cd) contamination. Selection of genetically low-Cd wheat (
Triticum aestivum
L
.
) genotypes, with a large biomass and high accumulation of Cd in straw but low-Cd concentration in grains, is an inventive approach of phytoremediation while keeping agricultural production in moderately contaminated soils. In this study, variations in Cd uptake and translocation among the 30 wheat genotypes in two different sites were investigated in field experiments. Significant differences in grain Cd concentration were observed between the two sites, with averaged values of 0.048 and 0.053 mg kg
−1
DW, respectively. Based on straw Cd accumulation, grain Cd concentration, and TF
rs
, Bainong207 and Aikang58 for site A and Huaimai23 and Yannong21 for site B are promising candidates of low-Cd genotypes, which have considerable potential in achieving phytoremediation while keeping agricultural production on moderately or slightly Cd-polluted soil. The results indicate that it is possible to select the optimal low-Cd genotypes of wheat for different soil types by taking consideration of the effect of soil-wheat genotype interaction on grain Cd concentration.