photoperiod
photoperiod
Definition
photo·peri·od (fōt′ō pir′ē əd)
noun
the number of daylight hours best suited to the growth and maturation of an organism
pho′to·pe′ri·od′ic (-pir′ē äd′ik) adjective
photoperiod
Usage Examples
Adjective modifier
- critical: In the case of hamsters the critical photoperiod is 12.5 hours.
- inductive: The time taken to form primordia varies with the length of the inductive photoperiod.
Modifies a noun
- manipulation: The analysis of the egg production records was used to evaluate the success of photoperiod manipulation in each group.
- change: THC production is probably associated with the induction of flowering resulting from the photoperiod change.
Noun used with modifier
- h: The isolates were cultured at 22°C with a 12 h photoperiod.
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