Unit 2224: Plant Propagation

1. Introduction to Plant Propagation

• Overview of plant propagation
• Sexual vs. asexual reproduction
• Importance of propagation in horticulture
• Benefits of propagating plants

2. Sexual Plant Propagation

• Seed sowing techniques
• Role of seeds in plant reproduction
• Factors affecting seed germination
  • Temperature
  • Moisture
  • Light
  • Seed dormancy
• Seedling care and management

3. Asexual Plant Propagation

• Overview of asexual propagation methods
• Cuttings
• Layering
• Division
• Grafting
• Advantages and disadvantages of each method

4. Rooting Hormones and Propagation Media

• Role of rooting hormones in propagation
• Types of rooting hormones
  • Auxins (IAA, IBA, NAA)
• Methods of application
  • Dipping
  • Powder
  • Gel
• Importance of propagation media
  • Characteristics of ideal media
  • Common media types (peat, sand, perlite, vermiculite)

5. Propagation by Division

• Identifying suitable plants for division
• Step-by-step division process
• Best practices to ensure plant health post-division

6. Propagation by Cuttings

• Types of cuttings
  • Softwood
  • Semi-hardwood
  • Hardwood
• Factors influencing success
  • Timing
  • Cutting size
  • Environmental conditions
• Care for cuttings until root development

7. Grafting and Budding

• Concepts and importance
• Grafting techniques
  • Cleft grafting
  • Whip and tongue grafting
• Bud grafting methods
• Selecting compatible plant varieties
• Post-graft care and maintenance

8. Tissue Culture and Micropropagation

• Introduction to tissue culture
• Steps in tissue culture process
• Benefits of micropropagation
• Commercial examples of tissue culture propagated plants

9. Propagation Challenges and Troubleshooting

• Common issues in propagation
  • Diseases
  • Pests
  • Environmental stresses
  • Propagation failures
• Troubleshooting techniques
• Preventative measures and best practices