Figure 2.

Starch biosynthesis from [1-¹⁴C]Glc-6-P and [1-¹⁴C]Glc-1-P in experiments with ruptured (□) and intact (▪) plastids prepared from large amyloplasts. The amyloplasts were incubated as described in the legend to Figure 1. Each set of experiments is numbered. The amount of hexose residues incorporated is calculated as described in the legend to Figure 1. U, Units.