Introductory Crop Physiology (1+1)

Translocation of Organic Solutes

• The process of movement of dissolved organic food materials from one place to another in plants is called translocation of organic solutes.
  
• In plants, the green parts of the plants such as leaves synthesize organic food materials like carbohydrates.
  
• They move in solution to the non-green parts such as roots for utilization and storage.
  
• Generally, they move from the region of synthesis to the region of utilization.
  
• The region of synthesis is called supply end or source and the region of utilization is called consumption end or sink.
  
• The organic food materials move from source to sink.
  
• Translocation of organic solutes always takes place from the region of higher concentration to the region of lower concentration.
  
• Translocation of organic solutes occurs in the soluble from and it occurs mainly through phloem.