Responses of organisms to the relative lengths of light and dark periods
This article's lead section may be too short to adequately summarize the key points. Please consider expanding the lead to provide an accessible overview of all important aspects of the article.(October 2023)
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 plants, long-day plants, and day-neutral plants.
In animals photoperiodism (sometimes called seasonality) is the suite of physiological changes that occur in response to changes in day length. This allows animals to respond to a temporally changing environment associated with changing seasons as the earth orbits the sun.
three groups according to the photoperiods: short-day plants, long-day plants, and day-neutral plants. In animals photoperiodism (sometimes called seasonality)...
development, and the switch from the vegetative to the flowering stage (photoperiodism). Most research on photomorphogenesis is derived from plants studies...
the plants used in experiments that led to the definitions of photoperiod and photoperiodism. Yet, it's likely that Chinese, Korean and Japanese plantsmen...
behavior, however. Wyeomyia smithii is a model organism for the study of photoperiodism, the biotic process of controlling seasonal life history events by measuring...
types of rodents to the same photoperiods. When a diurnal Nile grass rat and nocturnal mouse are exposed to the same photoperiod and light intensity, increased...
plants also require both dark and light periods, an effect known as photoperiodism, to trigger flowering. Therefore, lights may be turned on or off at...
species to be seriously studied in terms of their circadian activity and photoperiodism, in part because of their availability and adaptability in captivity...
similar manner, Garner and Allard's efforts would gather an awareness of photoperiodism which involves epigenetic modifications following the duration of nighttime...
on age, as opposed to the ratio of light to dark hours required with photoperiod dependent/short-day strains. Many autoflowering varieties are ready to...
(daily) rhythms in living organisms, including processes associated with photoperiodism and daily torpor. It was established in 2003 and originally published...
in this period. The reproductive cycle in a mare is controlled by the photoperiod (length of the day), the cycle first triggered when the days begin to...
the tip. The photoperiod also significantly influences how fast the corms grow. Corms begin to develop much more slowly if the photoperiod exceeds 12 hours...
as changes in levels of plant hormones and seasonable temperature and photoperiod changes. Many perennial and most biennial plants require vernalization...
Chrysanthamums, mixed, part of a display at Hampton Court Flower Show. Photoperiodism Nicolson, Dan H. (May 1999). "Report of the General Committee: 8". Taxon...
(April 2015). "Annual gonadal cycles in birds: Modeling the effects of photoperiod on seasonal changes in GnRH-1 secretion". Frontiers in Neuroendocrinology...
hormones and iodine in the mediobasal hypothalamus changes in response to photoperiod. Thyroid hormones in turn induce reproductive changes. This is found...
varieties may contain combinations of these pigments. Maize has short-day photoperiodism, meaning that it requires nights of a certain length to flower. Flowering...
production, cell regeneration, and other biological activities. In addition, photoperiodism, the physiological reaction of organisms to the length of day or night...
JSTOR 1940645. Moss, G (27 November 2015). "Influence of Temperature and Photoperiod on Flower Induction and Inflorescence Development in Sweet Orange (Citrus...
flowering is sensitive to photoperiod and sesame variety. The photoperiod also affects the oil content in sesame seed; increased photoperiod increases oil content...
captivity may come into oestrus more frequently, perhaps because the photoperiod stimulus breaks down under conditions of artificial lighting. Canids...
the summer coat in the following spring. Moulting is affected by the photoperiod. Deer are also excellent jumpers and swimmers. Deer are ruminants, or...
range of diversity found among these cultivars includes variation in photoperiod (length of day that triggers bulbing), storage life, flavour, and skin...
structure, the eye of the blind mole-rat, is believed to retain function in photoperiod perception. Speciation requires a degree of reproductive isolation—that...
Global Information