Lab 10

• layering: producing rooted before detaching from the mother plant
• continued attachment to the mother plant:

  • prevents water stress
  • accumulation of carbohydrates
  • accumulation of auxin
• methods of layering:

  • simple
  • compound
  • serpentine
  • mound
  • trench
  • drop
  • air
• simple layering: bending of a shoot to the ground to induce formation of adventitious roots
• Simple layering is done in early spring with 1 year old wood and harvested in the fall or next spring
• Air layering is done in the spring and summer on pervious season's growth
• You can propagate groundcovers via cutting, layering, and division
• Most layering is done in late winter or early spring
• compound layering: similar to simple layering except a majority of a stem is buried underground
• Sphagnum moss is used in air layering
• girdling: removal of a layer of bark around the stem
• Layering differs from cuttings in that layering initiates roots before shoot is removed
• Auxin is used for layering
• Simple layering is NOT an example of reverse polarity