gibberellins

• Gibberellins can control flower and fruit formation, producing seedless fruit and controlling seed germination
• Controlling flower and fruit formation

  1. gibberellins stimulate seed germination, stem growth and flowering. They can help plants flower earlier or under conditions they wouldn’t normally
  2. they can reduce flower formation which can improve fruit quality. Fewer flower means fewer fruits that can grow nice and big
• Germination?

  growth of seed into plant
• Gibberellins can control:

  • flower and fruit formations
  • production of seedless fruit
  • seed germination
• Producing seedless fruit:

  1. fruit with seeds usually grow on flowering plants that have been pollinated by insects. If flower isn't pollinated, fruit and seeds don’t grow
  2. when gibberellins is applied to the unpollinated flowers, fruit will grow but not seed
  3. some seedless citrus fruits can be grown this way
• Controlling seed germination:

  1. lots of seeds won’t germinate until they’ve been through a certain condition (e.g. period of cold or dryness)
  2. when gibberellins is applied, seeds germinate in times of year they don’t normally. This makes sure all seeds germinate at same time