Commercial Use of Plant Hormones

Commercial Use of Plant Hormones

1. Weedkillers

   • Selective weedkillers attack some plants and not others.
     • Contains a growth hormone causing plants to grow too quickly and to die.

2. Rooting Powder

   • used to produce lots of clones of a really good plant very quickly
   • cut off part of a plant will not normally grow
     • rooting powder makes this possible because it contains a plant growth hormone
       • cut off plant starts producing roots and growing as a new plant

3. Controlling the ripening of fruit

   • Fruits are sprayed with hormones to either delay or speed up ripening so they are ready to sell.

4. Dormancy

   • plants going through certain conditions until starting to germinate, i.e. periods of cold or dryness
   • hormone called gibberellin overcomes this dormancy
     • plants can grow on times they wouldn't grow normally

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