- - AGRICULTURE CORE CURRICULUM - -

(CLF6000) Advanced Core Cluster: ORNAMENTAL HORTICULTURE

 (CLF6250) Unit Title: SEXUAL AND ASEXUAL PROPAGATION


         UNIT DIRECTORY:

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          Code    Topic Title                          Hours    Year(s)
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         (CLF6251) Sexual & Asexual Propagation       2 - 3       3 / 4

         (CLF6252) Parts of the Flower                    1       3 / 4

         (CLF6253) Pollination and Seed Production        2       3 / 4

         (CLF6254) Reproduction by Spores                 1       3 / 4

         (CLF6255) Vegetative Cuttings                3 - 4       3 / 4

         (CFL6256) Budding and Grafting               2 - 3       3 / 4

         (CFL6257) Other Propagation Methods              2       3 / 4

         (CFL6299) Unit Exam                              1       3 / 4

                                    TOTAL TIME FOR UNIT = 14
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UNIT GOAL: Students will differentiate between the two types of plant 
reproduction and explain important factors affecting propagation.
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UNIT OBJECTIVES: Upon completion of this unit, students will be able to:

1. Explain the difference between sexual and asexual (vegetative) 
   propagation, give two examples of each, and demonstrate how they are
   currently used in horticulture.

2. Discuss how some plants (e.g., ferns and fungi) reproduce sexually by
   means other than seeds.

3. Identify the principal parts of a typical flower, including pistils,
   stamens, sepals, petals, receptacle, calyx, and corolla, on an actual
   flower (not a diagram).

4. Explain the difference between a complete and an incomplete flower.

5. Describe two situations of pollen transfer that can be called self-
   pollination (e.g., within one flower or between flowers on the same 
   plant).

6. Describe three mechanisms plants use to ensure cross-pollination, e.g.,
   effects of flower structure, dioecious plants (unisexual plants), and 
   pistils and stamens maturing at different times, and demonstrate how to 
   cross-pollinate plants in class.

7. List and describe, in order of occurrence, the major events that take 
   place in plant reproduction from pollination through fertilization,
   ending with seed formation.

8. Demonstrate in class at least three techniques for making vegetative
   cuttings (e.g., stem, leaf, root, hardwood, softwood, semi-hardwood).

9. List and briefly describe four environmental factors that affect the
   rooting of a stem cutting (e.g., soil temperature, humidity, light, and
   hormonal balance).

10. Demonstrate in class one type of budding and one type of grafting
    (e.g., T or shield, chip, patch bud, side whip, cleft graft).

11. Demonstrate two other methods of vegetative propagation (e.g.,
    separation, division, tissue culture, layering).

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REFERENCES:

Bailey, L. H. (1974). THE NURSERY MANUAL. New York: Macmillan.

Editors of Sunset Books & Sunset Magazines. (1979). WESTERN GARDEN BOOK.
 Menlo Park, CA: Lane Publishing Co. [newer edition available]

Hartmann, H. T., Flocker, W. J., & Kofranek, A. M. (1981). PLANT SCIENCE:
 GROWTH, DEVELOPMENT, AND UTILIZATION OF CULTIVATED PLANTS. Englewood
 Cliffs, NJ: Prentice-Hall.

Hartmann, H. T., & Kester, D. (1983). PLANT PROPAGATION: PRINCIPLES AND 
 PRACTICES (4th ed.). Englewood Cliffs, NJ: Prentice-Hall.

Hoshizaki, Barbara. (1975). FERN GROWERS MANUAL. New York: Knopf.

Ingels, Jack E. (1985). ORNAMENTAL HORTICULTURE: PRINCIPLES AND PRACTICES. 
 Albany, NY: Delmar Publishers.

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RESOURCES:

CATA Curricular Code, Ornamental Horticulture. Available from:
 CATA Executive Director, 1100 N St., 1-D, Sacramento, CA 95814
 (916) 443-2282


1/6/91 MT/clh

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