1. Sexual Reproduction Plant Propagation
Original work from “Applied Technologies” edited and used with permission by Dr. Teri Hamlin

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

3. Introduction What is Plant Propagation?
The multiplication of plants by both sexual and asexual means
Requires a knowledge of plants and how to manipulate them.

4. Sexual Propagation The propagation of plants from SEEDS.
The most common type of propagation.

5. A seed is a whole plant in a compact form surrounded by a seed coat.
SEEDS
What is a seed?
A seed is a whole plant in a compact form surrounded by a seed coat.
It is a ripened flower ovule.

6. Seed Composition 3 parts of a seed: Seed Coat Endosperm
(Protects the embryonic plant.)
Embryo
Endosperm
(The new plant)
(Food storage tissue)

7. Viability & Longevity
If a seed is viable it will germinate and grow normally.
Longevity is how long the seed will remain viable (meaning quality).
Influences of viability
species
Storage Conditions degrees F
Time

8. Dormancy Requirements
Physical Dormancy
Physiological Dormancy

9. (Seed Coat Dormancy) Physical Dormancy Overcome by scarification
3 methods
- Mechanical treatment (using a file or sand paper)
- Hot water treatment (boiling water)
- Sulfuric Acid treatment

10. Physiological Dormancy
Photodormancy- is a condition in which a seed requires light in order to germinate. ( tobacco)
Thermodormancy- inhibition of seed germination in high temperatures. (lettuce) It’s a seeds sensitivity to temperature.

11. Stratification Seed must experience: 1. warm, dry period
2. cool, moist period days at degrees F
3. warm moist period

12. Selection of Seeds Select locally grown seeds Select certified seeds
-have been tested for germination ability and purity. (Ball Seed)
Choose hybrid seeds for greater vigor
Select primed ( presoaked) seeds

13. Indirect vs. Direct Seeding
plants sown indoors
plants must be transplanted
tomatoes, peppers, eggplant
seeded directly into permanent growing area
most economical method
corn, melons, beans, beets, peas, etc..