Figure 3.

Changes of fresh weight and nonstructural carbohydrate concentrations in polyanthus leaves during development. The plant analyzed was greenhouse-grown (25°C/15°C; day/night), 4 months old (postflowering), and had reached its 12-leaf stage. The leaves were harvested about 3 h into the light period. The carbohydrates were determined by the HPLC-PAD method described in Methods. Two successive leaves were combined for analysis. A, Leaf fresh weight (fwt) (○) and starch (▴). B, Volemitol (•), sedoheptulose (□), Suc (▪), Glc (⋄), and Fru (▵).