Absorption and distribution of cadmium of three maize hybrids in three environments

Abstract

Anthropogenic soil contamination with heavy metals has received much attention in recent years, especially cadmium (Cd), which is a very toxic element for human health and is exposure is mainly through contaminated food. Maize (Zea mays L.) is one of the most important cereals in the human diet that is characterized as species whose cultivars differ in Cd accumulation. Therefore, identifying and selecting low Cd-accumulating genetic material will contribute to reducing its ingestion. Among the agricultural crops that are important for Cd in the human diet is maize. Cadmium contents in three maize cultivars were grown under different environments conditions in Chile where soils were enriched with increasing Cd rates, were evaluated. Grain yield, Cd concentration in different plant tissues, and soil post-harvest, were evaluated. Results showed that grain yield was not affected by soil Cd; however, plant tissues generally exhibited differences in Cd concentration associated with the environment, La Serena showed the highest grain Cd accumulation (30 µg kg -1 ; P < 0.05). In addition, among cultivars, Pioneer showed the highest grain Cd concentration (19.5 µg kg -1 ; P < 0.05). Grain Cd concentration of the three maize cultivars were within the range cited in the bibliography as not toxic.

Impact of Industrial Pollution of Cadmium on Traditional Crop Planting Areas and Land Management: A Case Study in Northwest China

“…When the concentration of cadmium reaches 0.2 mg kg −1 , the content values of cadmium in the root, stem, and leaf are 2.14 mg kg −1 , 0.48 mg kg −1 , and 0.27 mg kg −1 , respectively (data not shown). These results were consistent with those of Retamal-Salgado and Shakeel [42,43]. In this scenario, the content of cadmium in the stems was close to the threshold of the cadmium content in feed (0.5 mg kg −1 ) (Table 1).…”

Heavy Metal Analysis and Health Risk Assessment of Potato (Solanum tuberosum L.) Cultivars irrigated with Fly Ash-Treated Acid Mine Drainage

“…These radioactive isotopes had varied mobility in the phloem, according to the researchers. Confirmed that phloem transport provided the metal micronutrients Mn, Zn, Co, and Fe and that this transport was linked to the availability of nicotianamine [107]. In addition to its role in long-distance transport, found that nicotianamine is critical for the regulation of metal transfer within cells [108].…”

Metallic Composition Analysis of Crude Petroleum from Some Oil Fields in Ghana

“…Concerning the three oil fields, Saltpond oil field on the average recorded greater number of toxic metals as compared to Jubilee and TEN oil fields. The greater number of heavy metals in crude petroleum recorded suggests that crude petroleum spillage and waste from Saltpond oil field may cause greater ecological imbalance to lives than that from Jubilee and TEN oil fields [1,10,12,38]. However, for the four crude petroleum samples used for the study, metal elements in traces that are biologically toxic to the environment were relatively low in concentrations [1].…”