use photoperiodic in a sentence.
Given the marked photoperiodic control of the frost-hardening process in woody species at high latitudes, it is understandable that they harden more extensively compared to populations at lower latitudes under similar temperatures.
I can postulate that the extra light the cactus now gets triggered some photoperiodic phenomenom.
It's been known for some time that when people are denied photoperiodic cues their rhythms tend to lengthen, usually stabilizing between twenty-seven and thirty-six hours.
The plant is extremely photoperiodic, with most varieties only flowering with day-light less than 14 hours a day.
Its triticale progeny indicated that in the act of fertilization it had created dwarfs, introduced partial photoperiodic insensitivity, and completely overcome the sterility barrier, which had inhibited progress in triticale improvement for decades.