Figure 2.

A representative plot of Mn net uptake by the Mn-efficient barley genotype Vanessa (circles) and the Mn-inefficient barley genotype Antonia (triangles) as measured by online ICP-MS. The plants were pregrown in 25 d as described in “Materials and Methods.” After 400 min from the start of experiments, a single-pulse addition of Mn was given. The experiments were repeated three times with similar results. Neither root nor shoot weights differed (P > 0.05): 0.71 and 0.70 g DW for roots of Vanessa and Antonia, respectively, and 0.75 and 0.75 g DW for the corresponding shoots.