Plant Propagation by Cuttings

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Plant Propagation by Cuttings

• a. Kinds of cuttings
• 1) Stem cuttings
• 2) Leaf-bud cutting (single-eye)
• 3) Root cuttings
• 4) Leaf cuttings
• b. Totipotency-The ability of an individual
  cell to reconstitute the entire plant part and
  functions
• c. Dedifferentiation-The capability of
  previously developed, differentiated cell to
  return to a meristem

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Plant Propagation by Cuttings

• 1. Stem cuttings
• 2. Leaf-bud cutting (single-eye)
• 3. Root cuttings
• 4. Leaf cuttings

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1. Stem Cuttings

• Softwood Cuttings
• Semi-Hardwood Cutting
• Hardwood Cuttings
• Herbaceous Cuttings

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Softwood Cuttings
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Shoftwood Cuttings - Hydrangea
Butterfly cutting (top) Double-eye single node
cutting (middle) Single-eye single node cuttings
(bottom)
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Softwood Cuttings-Peach
- Actively growing shoots are used - Softwood
cuttings are taken during spring and summer
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Influence of IBA on Semi-Hardwood Cuttings -
Cordia
1-Control, 2-50 ethanol, 3-100 ppm, 4-1000 ppm,
5-2000 ppm, 6-4000 ppm, 7-6000 ppm, 8-8000 ppm,
9-10000 ppm IBA
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Semi-Hardwood Cuttings - Jojoba
Treating cuttings in IBA Solution (top)
Sticking IBA-treated cuttings in root substrate
(bottom)
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Bottom Heat System for Cutting Benches
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Temperature Differential Helpful for Root
Formation

• Rooting requires carbohydrates (energy), auxin
  (growth hormone), and rooting cofactors (enzymes)
• Temperature differential (10 oF) between the
  ambient air and root zone is helpful for faster
  rooting

Ambient Temp 60 oF
Root zone Temp 70 oF
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Good sanitation is important
Cutting on the left was infected with Alternaria
and did not root
Cutting on the right was healthy and rooted well
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Cutting Propagation in Jojoba

• Regular Stem Cuttings
• Use 4-5 nodes
• Semi-hardwood cuttings
• Single Node Cuttings
• Double-eye single node cuttings
• Single-eye single node cuttings

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Rooting of 3 Different Types of Cuttings in Jojoba
Regular Cuttings
Single Node Cuttings
Double Eye (DE)
Single Eye (SE)
5-node
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Single Node Cuttings
Double-Eye Single Node Cutting (DE) - Healthier
than SE - Less disease attacks
Single-Eye Single Node Cutting (SE) - Largest
no. cuttings/plant - Slower development -
Higher mortality
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Clonal Selection of Jojoba from Native
StandsPima Canyon, Tucson, AZ
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Clonal Selection from Cultivated Field
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Rooting jojoba cuttings in bundles with a bottom
heat system
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Jojob Cutting Propagation House
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High Pressure Fogging(1000 psi pressure)
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Cuttings rooted under high-pressure fogging
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Use of Plant Bands for Rooting
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Hardening of rooted cuttings under a shade house
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Clonally Propagated Jojoba FieldBakersfield, CA
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An orchard of clonally propagated citrus plants,
Bakersfield, CA
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Commercial Cutting Operation
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Bagged Cuttings are Stored in Cold
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Trimming Cuttings
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Trimming Cuttings
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Growth Regulator (IBA) Treatment on Cuttages
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Rooting Cuttings of Pacific Yew
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Outdoor Rooting Facility-Monrovia Nursery
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Herbaceous Cuttings-Chrysanthemum
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Herbaceous Cuttings
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Carnation Cutting Harvest
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Steam Sterilizing Beds
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pH Adjustment of Carnation Beds
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Planting Rooted Cuttings
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Typical Carnation Benches
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Poinsettia Plant Grown in Mexico
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Commercial Propagation of Poinsettia
Paul Ecke, Sr. Developer of modern day
poinsettias
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Herbaceous Cuttings-Poinsettia
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Leaf Cuttings-African Violet, Piggyback Plant