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Plant Propagation PowerPoint Presentation
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Plant Propagation

Plant Propagation

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Plant Propagation

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  1. Plant Propagation • The reproduction of new plants from seeds or vegetative parts of a plant.

  2. Asexual Propagation • The reproduction of new plants from the stems, leaves, or roots of a parent plant. • No seeds are used, just portions of the parent plant which are placed in soil

  3. Benefits of Asexual Propagation • Produce plants faster • Disease free stock • Works when seeds are hard to germinate • Plants produced are genetically identical to the parent plant “Clones” • Plants with or without reproductive parts can be produced • Less Expensive in some cases

  4. Where Can Cuttings be Taken From? • Roots • Stems • Leaves

  5. Methods of Asexual Propagation • Stem Cuttings • Leaf Cuttings • Leaf Bud Cuttings • Root Cuttings

  6. Stem Cuttings • Softwood Cuttings • Herbaceous Cuttings • Semi-hardwood Cuttings • Hardwood Cuttings • Conifer Cuttings

  7. Softwood Cuttings • Taken from soft, new spring growth of woody plants • Root easy but require more attention • Usually 3 to 5 inches in length • 2 or 3 nodes • Cut at 45 degree angles ¼ inch below a node • 1/3 of lower leaves are removed

  8. Herbaceous Cuttings • Also considered softwood cuttings • Numerous succulent greenhouse plants • 3 to 4 inches long • Contain several leaves • Root easily

  9. Semi-hardwood Cuttings • Woody, broad leaved plants • Taken in the summer from new shoots • 3 to 6 inches in length • Handled the same as softwood cuttings

  10. Hardwood Cuttings • Prepared during the dormant season • Deciduous or evergreen plants • 6 to 8 inches in length • Taken from year old wood • Form callus tissue during the winter • Develop roots in the spring

  11. Conifer Cuttings • Early winter • Narrowleaf evergreens • May take several months to produce roots

  12. Leaf Cuttings • Consist of a leaf blade or leaf blade with petiole • Used when plant material is scarce • Used when a large number of new plants are needed • Houseplants or foliage plants

  13. Leaf Cuttings Cont. • Leaf blades can be cut into pieces and inserted into medium • Some leaves can be cut on the primary veins and laid flat on top of the growing medium. • Leaf and petiole cuttings are place petiole down the the medium

  14. Leaf Bud Cuttings • Consist of a leaf, petiole, and a short piece of stem with lateral bud. • Must have well developed buds, and healthy, actively growing leaves. • Insert in medium with the lateral bud just below the surface

  15. Root Cuttings • Made from root pieces of young plants • During late winter or early spring • Roots are dug, cleaned, and treated with fungicide • 2 to 6 inches in length • Placed horizontally or vertically • Quite laborious

  16. Rooting Hormones • Material that promote the development of roots • Applied to the bases of the cuttings • Powders or Solutions • Do not use too much, it may cause the stem to rot

  17. Root-Inducing Environment • High humidity to reduce water loss • Indirect sunlight • Growing medium