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Propagation Information 2022

Propagation Information 2022. By: Becky McGuire.    Sexual Reproduction. requires flowers to form, pollination & fertilization to occur, seeds develop and grow A. Pollen from anther falls on stigma of pistil from anther of stamen B. Fertilization occurs in ovary

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Propagation Information 2022

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  1. Propagation Information2022 By: Becky McGuire

  2.    Sexual Reproduction • requires flowers to form, pollination & fertilization to occur, seeds develop and grow • A. Pollen from anther falls on stigma of pistil from anther of stamen • B. Fertilization occurs in ovary • Ovary develops into fruit and ovules become seed

  3. Seeds are living or dormant • A. 3 parts: • 1.   seed coat: protects seed and may be thick/hard • 2.   endosperm/cotyledon: supply of stored food (endosperm/cotyledon) • 3.   embryo: 3 parts: shoot (plumule), stem (hypocotyl) and root (radicle)

  4. Germination requirements • 1.   water: softens seed coat, moves stored food • 2.   temperature: wide range/seed • 3.   oxygen: saturated soil leads to no germination • 4.   light: varies with plant, lettuce needs light to grow

  5. Dormancy • seed is alive, but resting (sleeping/hibernating) • 1.   low temperature • 2.   hard seed coat • 3.   temporarily kept from oxygen • 4.   embryo not fully developed • 5.   breaking dormancy: • --soak in hot water • --soak in acid • --scarification (scratching seed coat) • --expose to cold temps.

  6. viability • ability to germinate • --depends on kind of seed and storage conditions

  7. Asexual Reproduction • A. ensure new plants are identical to parent plants • maintain desirable species

  8. Common types of asexual propagation • 1.   cuttings: portion of plant removed and forms roots (shrubs/houseplants) • 2.   grafting: shoot removed from parent plant and placed on another (stock). (apple/fruit trees) • 3.   budding: bud removed from parent plant and placed on stock (fruit trees/ornamentals/roses)

  9. Common types of asexual propagation • 4. division: clumps of plants dug up and separated (hostas, mums, lilies) • 5. rhizomes: rhizomes dug up, cut into sections and planted (iris) • 6.   stolon: new plants root at nodes (strawberries)

  10.   Cuttings • A. most common form • B. cutting: any vegetative plant part (stem, leaf, roots) • C. stem cuttings should be 6 inches long with 3-4 leaves retained • D. cut stem at 45 degree angle right below node • E.  use sharp knife/blade

  11. Cuttings • F. remove flowers and buds to allow energy to go to roots • G. may apply rooting hormone • H. insert into soil, drain well, provide moisture I. bright, indirect light

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