*Grover C. Stephens

Modification by photoperiod. Biological Bulletin 101:71-83. Stephens, G.C. 1955. Induction of molting in the crayfish, Cambarus ... by modification of daily photoperiod. Biological Bulletin 108:235-241. Stephens, G.C. and R.A. Schinske. 1961. Uptake of amino ...

*Eleocharis dulcis

The photoperiod also significantly influences how fast the corms grow. Corms begin to develop much more slowly if the ... f.) Hensch) to photoperiod". The Journal of Horticultural Science and Biotechnology. 75 (1): 72-78. doi:10.1080/14620316.2000. ... photoperiod exceeds 12 hours. The corms are also the propagating material. Alternatively, transplants can be used. Machinery ...

*Hibernaculum (zoology)

... short-photoperiod lighting; Minimum disturbance Species from cool continental climates hibernate at temperatures from 0 to 4 °C ...

*Sesame

The photoperiod also affects the oil content in sesame seed; increased photoperiod increases oil content. The oil content of ... Initiation of flowering is sensitive to photoperiod and to sesame variety. ...

*Hypena opulenta

Overwintering is triggered by short photoperiod. Weed, A.S.; Casagrande, R.A. (2010). "Biology and larval feeding impact of ' ...

*Edward R. Hauser

Hansen PJ, Kamwanja LA, Hauser ER (October 1983). "Photoperiod influences age at puberty of heifers". J Anim Sci. 57 (4): 985- ... He subsequently did studies that, for the first time, demonstrated that photoperiod modified the processes leading to puberty ...

*Serge Daan

The effects of temperature, photoperiod and daily torpor. 1997 P.M. Meerlo: Behavioural and chronobiological consequences of ...

*Developmental biology

... photoperiod, drought, temperature, and other external environmental conditions; and exogenous sources of PGRs, e.g., externally ...

*Plant development

... photoperiod, drought, temperature, and other external environmental conditions; and exogenous sources of PGRs, e.g., externally ...

*Nelumbo nucifera

MASUDA, JUN-ICHIRO; URAKAWA, TOSHIHIRO; OZAKI, YUKIO; OKUBO, HIROSHI (2006-01-01). "Short Photoperiod Induces Dormancy in Lotus ...

*Diapause

In temperate regions, photoperiod is the most reliable cues of seasonal change. Depending on the season in which diapause ... Photoperiod is the most important stimulus initiating diapause. The initiation phase begins when morphological development ... Token stimuli can consist of changes in photoperiod, thermoperiod, or allelochemicals from food plants. These stimuli are not ... Sensitivity to certain stimuli which act to prevent termination of diapause, such as photoperiod and temperature, is increased ...

*Harlan Lewis

Response of California Annuals to Photoperiod and Temperature". American Journal of Botany. 32 (1): 1-12. Lewis, Harlan (1946 ... that of the response of 13 California annuals to photoperiod and temperature. Although they were not able to correlate the ...

*Capsicum

For flowering, Capsicum is a non-photoperiod-sensitive crop. The flowers can self-pollinate. However, at extremely high ...

*Pine siskin

2003). Effects of photoperiod on brain GnRH plasticity and peripheral reproductive physiology in three species of cardueline ... Hahn, TP; Pereyra, ME; Sharbaugh, SM; Bentley, GE (2004). "Physiological responses to photoperiod in three cardueline finch ...

*Golf course turf

Photoperiod (the length of daylight) affects overall plant uptake. When the length of daylight gets shorter, grass undergoes ...

*Helicoverpa assulta

This pattern is affected by age, photoperiod, and temperature. The daily rhythm of hormone production varies when the female ... Because PBAN can be produced independently of the moth's photoperiod, the circadian rhythm of pheromone production must be ...

*Erwin Bünning

To create artificial photoperiods, Bünning exposed plants to a light-dark cycle indicative of a specific season, such as the ... By entraining the plants to a spring or summer photoperiod, Bünning was able to induce flowering, even if the actual season ... In the early-1930s, Bünning proposed that organisms rely on a circadian rhythm of sensitivity to light to measure photoperiod. ... Bünning also demonstrated that an artificial photoperiod can induce flowering at inappropriate times, supporting his model of ...

*Harbor seal

Temte, J. L. (1994). Photoperiod control of birth timing in harbour seal (Phoca vitulina). Journal of Zoology (London) 233: 369 ...

*Kallima inachus

Photoperiods affect the development period of larvae at 20 °C (68 °F) but not at 25 °C (77 °F) and 30 °C (86 °F). As ... Yi Chuan-Hui; Chen Xiao-Ming; Shi Jun-Yi; Zhou Cheng-Li (2008). "Influence of the Photoperiod on Larvae of Kallima inachus ... The low survival rate at 30 °C under most photoperiod gradients requires that artificial breeding of K. inachus be done below ... Increasing temperature also made an increase in the survival rate under different photoperiods. The survival rate of larvae at ...

*Douglas G. McMahon

Jackson, C. R.; Capozzi, M; Dai, H; McMahon, D. G. (2014). "Circadian Perinatal Photoperiod has Enduring Effects on Retinal ... Additionally, dopamine levels were significantly lower in short photoperiod mice. These findings suggest that seasonal light ... and how perinatal photoperiod affects the serotinergic system and anxious/depressive behavior. Alongside Dao-Qi Zhang, the lab ...

*Spotfin chub

The timing of spawning varies based on temperature and photoperiod. Breeding males' bodies will turn a metallic blue with their ...

*Grow light

Day-neutral plants are those that flower regardless of photoperiod. Plants that flower in response to photoperiod may have a ... In general, a "short-day" is one in which the photoperiod is no more than 12 hours. A "long-day" is one in which the ... An obligate response means that the plant will only flower if grown under a certain photoperiod. Lux and lumens are commonly ... A facultative response means that a plant will eventually flower regardless of photoperiod, but will flower faster if grown ...

*Biphasic and polyphasic sleep

In his 1992 study "In short photoperiods, human sleep is biphasic", Thomas Wehr had eight healthy men confined to a room for ... Wehr, T. A. (June 1992). "In short photoperiods, human sleep is biphasic". Journal of Sleep Research. 1 (2): 103-107. doi: ...

*Thomas Wehr

Segmented sleep Wehr, T. A. (1992). "In short photoperiods, human sleep is biphasic". Journal of Sleep Research. 1 (2): 103-107 ...

*Circadian rhythm

Although not the only parameter, the changing length of the photoperiod ('daylength') is the most predictive environmental cue ... Hut RA, Beersma DG; Beersma (July 2011). "Evolution of time-keeping mechanisms: early emergence and adaptation to photoperiod ...