Asexual Propagation Grafting

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Asexual PropagationGrafting

• Original work from Applied Technologies edited
  and used with permission by Dr. Teri Hamlin

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Table of Contents

• Introduction to Plant Propagation
• Sexual Propagation
• Asexual Propagation
• Stem, Leaf, Cuttings
• Layering
• Separation Division
• Budding and Grafting
• Tissue Culture

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Grafting

• Grafting is a process by which two different
  plants are united so that they grow as one.

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Grafting TERMS

• Scion - the newly installed shoot or top of the
  plant
• Rootstock - the seedling or plant used as the
  bottom half of the graft

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Scion
Rootstock
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This is a REAL neat trick, but it doesnt seem
practical. Why would you choose to use it?
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Reasons for Grafting

• To insert a different variety on part of the
  limbs of trees for cross-pollination
• Obtain benefits of certain rootstocks

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Benefits

• Disease resistant rootstocks
• Stronger root systems
• Dwarfing capabilities

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Requirements for Success

• Stock and Scion must be compatible
• Cambium layers must match
• Cant graft monocots --Why?
• Timing - scion should be dormant (NOT actively
  growing)

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Types of Grafts

• Whip Graft
• -- used when stock scion are small and are the
  same size
• Cleft Graft
• -- used in topworking trees
• -- stock is usually much larger than scion

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Budding
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Budding

• Actually a form of grafting
• A single bud is used instead of a scion
• Budding is quicker
• 2 main types
• - T-budding Chip Budding

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T-budding

• Scion and Rootstock must be compatible
• Bark must be slipping
• Examples apples, pears, peaches, plums,
  cherries, and roses

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Chip Budding

• Very similar to T-budding
• Advantage wood can be dormant, bark doesnt
  have to slip
• Widely used for grapes

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