1. Objective 20.02
Discuss methods of asexual propagation using plants that are typically reproduced asexually

2. Propagation
Increasing the number of a plant species or reproduction of a species

3. Sexual Propagation Use of seed for reproducing plants
Only way to obtain new varieties
Increase hybrid vigor of plants
Less expensive
Quicker than other methods

4. Asexual Propagation
Use of a part or parts of a plant for reproducing plants
Also called vegetative propagation
The new plant is an exact duplicate of the parent plant

5. Methods of Asexual Propagation
Cuttings are vegetative parts that the parent uses to regenerate itself
Examples:
Leaf cuttings
Root cuttings
Stem cuttings

6. Methods of Asexual Propagation (Continued)
Rooting hormone: a substance applied to cuttings to speed up the root development.

7. Methods of Asexual Propagation (Continued)
Layering a method where the stem is encouraged root while still attached to the parent plant
Examples:
Simple layering
Tip layering
Air layering

8. Air layering
                                 
Propagation method where a stem is girdled, treated with a rooting hormone, and surrounded with damp sphagnum moss and plastic until new roots appear.

9. Methods of Asexual Propagation (Continued)
Division: by dividing or separating the main part of the plant into small parts
Examples:
Day lilies

10. Methods of Asexual Propagation (Continued)
Grafting: joining two plants together as they grow as one
T-budding is the most common type

11. Methods of Asexual Propagation (Continued)
Root cutting: a type of cutting made when the plant is dormant and its roots have a reserve of carbohydrates
Can harm parent plant
Examples:
Roses
Blackberries
lilacs

12. Methods of Asexual Propagation (Continued)
Tissue culture or micropropagations: the use of very small and actively growing parts of the plant to produce a high number of new plants
Cloning is achieved by tissue culture

13. Seeds Result of sexual reproduction
Viable: a seed that is alive and capable of germination

14. That’s all folks…