photoperiodic
Sensitive to a particular daylength. Many plants are not photoperiodic, however, some are-including onions, spinach and mustard greens.
pilose ...
Photoperiod - the relationship between the length of light and dark in a 24-hour period.
Photosynthesis - the building of chemical compounds (carbohydrates) from light energy, water and CO2.
Photoperiodism - Physiological response due to length of light exposure.
Photophosphorylation - Generation of ATP via photosynthesis.
Photorespiration - Metabolic pathway that uses oxygen and produces CO2.
Photoperiodism- The physiological response of an organism to the periodicity and duration of light and darkness which affects many processes including growth, flowering, and germination.
PHOTOPERIODISM - The response of plants to the length of a day and night (i.e. poinsettias, cactus, night blooming flowers)
PINCH OUT - Pinching with the fingers to remove the tip of a growing shoot to encourage lateral growth.
photoperiod The amount of time a plant is exposed to light.
photosynthate A food product (sugar or starch) created through photosynthesis.
photoperiodThe duration of an organism's daily exposure to light.
photoperiodicDescribes growth affected by exposure to light.
The Poinsettia is a photoperiod plant. This means that they naturally begin to bud and produce flowers according to the number of hours they spend in darkness.
The environmental factors triggering winter egg production are diminishing food supply, temperature and photoperiod. The bulk of winter egg deposition occurs from mid to late August, but may continue until late September.
The poinsettia is a photoperiod plant, which means it begins to set buds and produce flowers as the winter nights become longer.
The secret of good bloom seems to be one of temperature and photoperiod control. They will develop buds and bloom if given bright light, short days, and night temperatures between 55 and 65 degrees Fahrenheit.
Some species may exhibit growth patterns regulated by changes in temperature, photoperiod, or water availability, and they will go dormant. The plants may drop their leaves as a signal. As dormancy approaches, gradually decrease the supply of water.
It is actually the plant's leaves that provide its color through a process called photoperiodism. This process, in response to certain amounts of light or lack thereof, turns the leaves from green to red (or pink, white, and other shade variations).
During the Civil War, roasted okra seeds served as a coffee substitute.
Some okra selections show a definite photoperiod response and produce most of their flowers in late summer as the days begin to get shorter.
Tips ...
Plant chrysanthemums in full sun. Do not plant mums near street or night lights as the artificial lighting will disturb their photoperiod cycle. Do not overcrowd chrysanthemums -- good air circulation helps prevent disease.
Both coolers easily fit under one of our 250-watt metal halide Hydrofarm Sunburst lights, which is connected to a timer set for a 12-hour photoperiod.
 See also: Plant, Flower, Water, Bloom, Spring
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