Abstract
The uptakes of arsenate, sodium, cadmium, zinc, copper and lead ions by roots of tea seedlings and their transport to the shoots were examined in solution cultures. Arsenate and sodium ions were rapidly transported to the leaves after uptake by roots. The other hand, the heavy metals, such as Cd, Zn, Cu and Pb, accumulated in roots. And their elements bound in roots were not released throughout 10 days after application. The concentrations of the heavy metals in tea leaves were kept to the low level determined in tea leaves from tea field. Arsenate and copper showed the harmful effects on roots and leaves. However, the effects of lead, cadmium and zinc were rather mild.
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