Comparison of cadmium accumulation in three Solanum species

In order to study the difference of cadmium (Cd) accumulation in three species of Solanum, the Cd accumulation characteristics of Solanum nigrum L., Solanum alatum Moench and Solanum nigrum L. var. humile (Bernh.) C. Y. Wu et S. C. Huang were studied by pot experiment under the condition of Cd concentration of 10 mg/L. The results showed that the biomass of all parts of S. nigrum was significantly higher than that of other Solanum species, while the rank order of the Cd content of the Solanum species was as follows: S. nigrum var. humile > S. alatum > S. nigrum. The amount of Cd extracted by the Solanum species observed significant difference, and the amount of Cd extracted by the stems, leaves and shoots of S. alatum was significantly higher than other Solanum species, indicating that S. alatum had the best repair effect on Cd-contaminated soil.