Asexual Propagation by Cuttings

1. Plant Propagation Asexual Propagation by Cuttings

2. Table of Contents • Introduction to Plant Propagation • Sexual Propagation • Asexual Propagation • Stem, Leaf, Cuttings • Layering • Separation & Division • Tissue Culture • Budding and Grafting

3. Asexual Propagation What is it? • The reproduction or multiplication of a plant without a seed…not a sexual process

4. Reasons to Use Asexual Propagation • To produce uniform, superior plants • Many plants don’t come true from seeds • Some plants don’t produce viable seeds • Take advantage of useful “freaks of nature”

5. Mutant Tissue

7. What is a CLONE? • A group of plants derived from a single individual plant. Disadvantage: NO Genetic Diversity! (All of the plants have identical genes.) Why is this a problem???

8. Cuttings • Most common type of asexual propagation Common Types of Cuttings: • Stem Cuttings • Leaf Cuttings • Leaf Bud Cuttings

9. Cut part of the plant Roll in a hormone. Place in media (SOIL). Keep cutting moist until it has its on roots.

10. Rules for Cuttings • Typically take cuttings from New Growth • Collect cuttings early in the morning • Collect cuttings from healthy stock plants • Provide proper environment for rooting

11. The Proper Environment... The Media • Must be sterile • Must provide air exchange • Must hold moisture The Atmosphere • Need HIGH relative humidity

12. Rooting Hormones Indoleacetic Acid (IAA) • natural plant hormone • causes roots to form on stems IBA & NAA • Most commonly used • Comes in powder or solution

13. Plant Propagation