Cadmium Accumulation in Spring Wheat Grains Is Influenced By Cadmium Bioavailability and Root Length.

High consumption levels of grains by humans are a concern for Cd, and there is increasing pressure to limit Cd uptake into the food supply. The objectives of this study were to compare grain Cd concentration and content in spring wheat varieties, investigate the relationship between Cd uptake in grains and root characteristics, and evaluate the correlation between Cd uptake and other minerals in a greenhouse and field study. Results indicatetd that grain Cd concentration and content at maturity was different among varieties in the greenhouse study. Differences also exhibited in grain Cd concentration among all the variety × location. One of the varieties showed lower grain Cd concentration at both locations. Grain Cd concentration and content linearly increased with RLD in the greenhouse and field studies. This suggests that we can manipulate Cd concentration through variety selection and agricultural management practices to achieve low Cd wheat concentrations.