Nectaries

• Nectaries are structures that release an aqueous fluid (nectar) with a high sugar content (sucrose, fructose, glucose)
• Floral nectaries - directly associated with pollination
• Extrafloral nectaries - not usually associate with pollination
• Nectariferous tissues - tissues composing the nectary (epidermis + specialized parenchyma)
• Nectar is released through modified stomata (always open)
• Nectar is produced by secretory cells in the nectary of the flower.
• Secretory Cells of Nectaries:

  • Dense cytoplasm
  • Small Vacuoles
  • Numerous mitochondria
  • ER highly developed
  • Numerous Golgi bodies