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  • Stimulate stem elongation by stimulating cell division and elongation.
  • Stimulates bolting/flowering in response to long days.
  • Breaks seed dormancy in some plants which require stratification or light to induce germination.
  • Stimulates enzyme production (a-amylase) in germinating cereal grains for mobilization of seed reserves.
  • Induces maleness in dioecious flowers (sex expression).
  • Can cause parthenocarpic (seedless) fruit development.
  • Can delay senescence in leaves and citrus fruits.
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Q: Identify the two functions of gibberellins?
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