Study on the Influence of Cadmium on the Growth of Two Aquatic Plants and the Accumulative Capacity of the Plants Towards Cadmium

This is a Study on the Influence of Cadmium on the Growth of two Aquatic Plants and the Accumulative Capacity of the Plants towards Cadmium, cress and acorus. The results show: the growing state of both cress and acorus was good. In the view of total biomass, acorus presented a higher amount; in the view of biomass underground(root)/ above ground(Stems and leaves), the biomass underground and above ground of both plants were increased paralleled with the rise of concentration, while more significant changes were detected in acorus. Acorus shows higher accumulation rate of Cd²⁺ compared to cress and its underground accumulation rate is significantly higher than that above ground; with the Cd²⁺ concentration of 25mg/L, the underground accumulation rate is up to 363.72mg/kg and that above ground was 183.62mg/kg.