photoperiod
/foh-tuh-peer-ee-uhd/US // ˌfoʊ təˈpɪər i əd //UK // (ˌfəʊtəʊˈpɪərɪəd) //
光周期,光照时间,光期,光照度
Definitions
n.名词 noun
- 1
Biology.
- : the interval in a 24-hour period during which a plant or animal is exposed to light.
Examples
Broad limits to functional reproductive activity seem to be set by the photoperiod—neuroendocrine system.
These captives had been kept for several months at a temperature of 21 degrees Centigrade, and on a daily photoperiod of 15 hours.
The mice were kept in a room in which temperature and photoperiod were controlled.
In general, Tb's showed a marked circadian cycle in phase with photoperiod.
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