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Time-dependent translocation of 65Zn from roots to shoots in intact seedlings of bread (A) and durum (B) wheat cultivars. Roots were immersed for 20 min in solutions containing different activities of 65Zn2+, and then transferred to solutions containing similar concentrations of nonradiolabeled ZnSO4. Data points and bars represent means and se values of three replicates. Error bars do not extend outside some data points. fr wt, Fresh weight.
