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The important effects of indole acetic acid on plant growth are;

  • The IAA promotes cell division in the vascular cambium.
  • IAA is used as the rooting hormone since it promotes root initiation.
  • It prevents the abscission of leaves and fruits so it is continuously produced by the leaves and fruits.
  • IAA promotes apical dominance.
  • IAA can produce parthenocarpic fruits.
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