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Feb 9, 2024 · For flowering during long-day seasons, the photoperiod extends into the light-sensitive portion of the day, which activates expression of the florigen gene (FT) to promote flowering. Photoperiodic growth detects the photosynthetic period, which is defined as the duration of time that light is above the photosynthetic compensation point.
The length of the light period over 24 h, also named photoperiod, regulates many aspects of plant growth. For example, trees stop growing when days shorten in autumn foreseeing the arrival of cold winter. There are more examples of developmental traits regulated by changes in photoperiod, some discussed in this review.
This occurs even though they may have started growing at different times. Their flowering is a response to the changing length of day and night as the season progresses. It helps promote cross pollination. The biological response to the timing and duration of day and night is called photoperiodism.
Photoperiodism is the physiological reaction of organisms to the length of light or a dark period. It occurs in plants and animals. Plant photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods. They are classified under three groups according to the photoperiods: short-day ...
photoperiodism, the functional or behavioral response of an organism to changes of duration in daily, seasonal, or yearly cycles of light and darkness. Photoperiodic reactions can be reasonably predicted, but temperature, nutrition, and other environmental factors also modify an organism’s response. In animals, the regular activities of ...
- The Editors of Encyclopaedia Britannica
Mar 21, 2024 · Photoperiod is influenced by the clock and at the same time feeds back information to it, hence keeping the pacemaker continuously tuned to the seasons. When considering the photoperiod pathway, flowering time often comes to mind first due to the enormous amount of knowledge accumulated in the last 20 years on floral transition.
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Photoperiodism is an organisms’ ability to adjust their physiology and behavior to seasonal changes in the environment according to the length of day (photoperiod), because photoperiod is the most reliable information to detect the time of year. Many mammals that live in high latitude use photoperiod to time breeding so that mothers can raise their offspring when foods are available and the ...
