释义 |
photophase in British English (ˈfəʊtəʊˌfeɪz) noun1. a phase of light in a cycle of light and dark 2. biology the phase of photosynthesis that requires light Examples of 'photophase' in a sentencephotophase When both the photophase and scotophase were assessed alone, no significant differences were found.During the photophase the animals were exposed to direct sunlight.The 5-hydroxytryptophan level was approximately two-fold higher during the scotophase than during the photophase.In this case, the significant effects were observed during the photophase.Tests were performed in laboratory under controlled humidity, temperature and photophase conditions.The daily amount of light integrated by the clock (i.e., the photophase duration) strongly regulates energy metabolism in photoperiodic species.The majority of eggs (93%) hatched within the first two hours after the beginning of photophase.In this species, activity peaks occurred at the beginning of the photophase and scotophase in the control group.Gravid females showed little or no movement during the photophase; however, they activelyflew and oviposited during the scotophase. |