Your SlideShare is downloading. ×
  • Like
Asexual reproduction
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.


Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply

Asexual reproduction



Published in Education , Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
No Downloads


Total Views
On SlideShare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. Propagating Plants Asexually
    Unit. Plant Science
    Problem Area. Plant Propagation
  • 2. Asexual reproduction
    in plants involves
    the propagation of new plants using
    only the vegetative parts of the
    parent plant.
    Asexual propagation enables the production of a plant that would otherwise be difficult or impossible to cultivate because the plant does not produce viable seed or the seed is difficult to germinate.
  • 3. Asexual = Genetic Clone
    maintain certain genetic forms of the plant
    may be faster than propagation by seed
    May be more economical
    in many cases it is easier
  • 4. What are the different methods of asexual reproduction?
    Stems, roots, leaves
    tissue culture
  • 5. 1. A stem cutting is a cut portion of a stem that contains a terminal bud or lateral buds and is placed in growing media to produce roots.
    a. Softwood cuttings—from soft, succulent growth.
    b. Hardwood cuttings—from one-year-old growth, deciduous, or evergreen plants.
    c. Semi-hardwood cuttings—from woody broad-leaved plants with new shoots.
  • 6. A leaf cutting consists of a leaf blade or leaf blade with petiole attached.
    A leaf-bud cutting consists of a leaf, petiole, and a short piece of stem with a lateral bud.
  • 7. root cutting uses the root or part of the root
    Root cuttings are not as predictable as other cuttings, being more dependent on seasonal influences.
  • 8. Rooting
    Temperature of the medium is kept between 75°F and 80°F
    High humidity with misting
    • Adventitious roots are roots that begin growth from the stem or a leaf
    • 9. Most plants do best in a loose, well-drained growing medium
    • 10. Rooting hormones can aid in rooting difficult plants
  • Division Vs. Separation
    Removal and planting of vegetative structures is separation.
    With division, the entire plant is cut into sections to make two or more plants
  • 11. Layering is a method in which roots form on a stem while it is still attached to the parent plant
  • 12. Grafting
    Connecting two plant parts in such a way that they will unite and continue to grow as one plant.
    Scion is a short piece of stem with two or more buds, and the rootstock is the lower portion of the graft.
    can have a dwarfing effect on the stem.
    increase the hardiness of a plant.
    Disease resistance in a plant can be improved
    change the natural form of a plant.
    to asexually propagate plants that are difficult to propagate
    Grafting is often used in the production of orchard trees, shade trees, and roses.
  • 13. Grafting
    Whip-and-tongue grafting is commonly used to propagate fruit trees.
  • 14. Cleft grafting is often used to join a smaller scion to a larger stock part.
    Bark grafting is similar to cleft grafting in that it joins smaller scion wood to a larger rootstock.
    Budding is similar to grafting except that the scion is reduced to a single bud with a small portion of bark or wood attached.
  • 15. Tissue culture, or micropropagation, is a very technical method of asexual propagation that involves the growing of plant cells or tissues on artificial media under sterile conditions.
  • 16. Advantages of Tissue Culture
    Large numbers of plants can be produced
    from a single plant in a relatively small
    space in a short period of time.
    Viruses and other systemic diseases are eliminated by propagating the quickly dividing cells of the shoot tip.
    Tissue culture gives the grower a means to produce plants with identical traits.
    Horticultural cultivars can be improved by selecting plants that vary slightly from the parent plant.
    Tissue culture is a required technique for producing genetically engineered plants.