Seed dormancy
Seed dormancy
A period in a life cycle when seed development is temporarily suspended
When mature seeds are placed under favorable conditions and fail to germinate, the seeds are dormant.
Innate dormancy (Primary dormancy)
Seed is dormant during seed maturation.
After-riping: seeds requried a period to be mature after the dispersal
Induced dormancy (Seconcary dormancy)
Seed does not germinate spontaneously until environmental conditions improve. The seed needs favorable environmental stimuli to germinate.
Enforced dormancy (Quiescence)
Seed germinates readily on removal of the environmental limitation.
Conditions
water
light
temperature
gasses (O2, CO2, etc.)
smoke
mechanical restriction
seed coat
hormone
References
- Tsuyuzaki, S. 1987. Origin of plants recovering on the volcano Usu, northern Japan, since the eruptions of 1977 and 1978. Vegetatio 73: 53-58
- seedbank
- seed dispersal
- seedbank estimation methods
- seed germination