Blood samples were collected twice weekly for the last 3 weeks of photoperiod treatment and assessed for LH to validate the responsetophotoperiod.
1
Circadian clocks also function in time-compensation for celestial navigation and in the measurement of day or night length for photoperiodism.
2
Tests of positive selection identify suites of candidate genes associated with meiosis and photoperiodism, as well as cold, drought, and oxidative stress responses.