Name:

Seeds Notes Fill-in

Requirements for germination:

  1. ___________________________
  2. ___________________________
  3. ___________________________
  4. ___________________________

Seed Dormancy

  1. Seeds will not always germinate immediately: _________________________
  2. Seed dormancy can be advantageous to a plant:
    1. Await better ______________________________ conditions.
    2. Synchronize to the environment ___________________________________.
    3. Disperse to new habitats by ___________________________________.
  3. There are two general categories of dormancy:
    1. Seed coat dormancy
      1. Growth inhibitors in the _____________________________.
      2. _______________ seed coats may require __________________________________.
    2. Embryo dormancy
      1. Further embryo development needed.
      2. Physiological dormancy due to growth ___________________________ needing to be broken down.
  4. Breaking dormancy:
    1. _________________________ - mechanically breaking the seed coat. (_____________________ require a fire).
    2. _________________________ - cold moisture regime to simulate winter.
    3. Leaching - _________________________________________.

Advantages of propagation by seed:

  1. Genetic diversity greater (____________________________________)
  2. ___________________________
  3. _________________________________ - vegetative propagation not possible.
  4. _________________________________ - annuals & biennials.
  5. ___________________________

Disadvantages of propagation by seed:

  1. ___________________________
  2. ___________________________