1. Photosynthesis: Photoassimilate is synthesized by
photosynthesis in leaves. 2. Synthesis of translocation
sugars: Photoassimilate is converted to translocation
sugars, such as sucrose and sorbitol. 3. Loading: Sucrose
and sorbitol are carried in the phloem by a transporter.
4. Translocation: Sugar can flow from high to low sugar
concentration according to the pressure flow theory. 5.
Unloading: Sugars translocated in fruit tissue are carried