3.4. Changes in DW of various spike parts
The dry weight of basal stems was increased by glucose and sucrose treatments more than by the mannitol treatment (Fig. 4C).DW of flowers on the basal stem was markedly increased by
sucrose, followed by glucose, whereas DW of flowers on the basal stem was linearly increased by mannitol (Fig. 4D). DW of upper stems was increased by glucose and sucrose treatments until the
10th or 15th day, respectively, whereas DW of upper stems was linearly increased by mannitol treatment and was heaviest among treatments on the 20th day (Fig. 4A). DW of flowers on the upper stem was markedly increased by sucrose, followed by glucose, but was only slightly increased in the control and sorbitol treatments (Fig. 4B). In contrast, DW of flowers on the upper stem in the mannitol treatment linearly increased with time, although the maximum DW was less than that in glucose and sucrose treatments.