Literatura científica selecionada sobre o tema "Photoperiodism"

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Artigos de revistas sobre o assunto "Photoperiodism"

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Lorincz, Annaka M., M. Benjamin Shoemaker, and Paul D. Heideman. "Genetic variation in photoperiodism among naturally photoperiodic rat strains." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 281, no. 6 (2001): R1817—R1824. http://dx.doi.org/10.1152/ajpregu.2001.281.6.r1817.

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Rattus norvegicus has been considered nonphotoperiodic, but Fischer 344 (F344) rats are inhibited in growth and reproductive development by short photoperiod (SD). We tested photoresponsiveness of the genetically divergent Brown Norway (BN) strain of rats. Peripubertal males were tested in long photoperiod or SD, with or without 30% food reduction. Young males were photoresponsive, with reductions in testis size, body mass, and food intake in SD and with enhanced responses to SD when food restricted. Photoperiods ≤11 h of light inhibited reproductive maturation and somatic growth, whereas phot
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Brainard, George C., John P. Hanifin, Felix M. Barker, Britt Sanford, and Milton H. Stetson. "Influence of near-ultraviolet radiation on reproductive and immunological development in juvenile male Siberian hamsters." Journal of Experimental Biology 204, no. 14 (2001): 2535–41. http://dx.doi.org/10.1242/jeb.204.14.2535.

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SUMMARY The aim of this study was to characterize the lenticular ultraviolet transmission of the Siberian hamster (Phodopus sungorus) and to probe the range of near-ultraviolet (UV-A, 315–400nm) and visible wavelengths (400–760nm) for modulating the photoperiodic regulation of its reproductive and immune systems. Ocular lenses from adult hamsters were found to transmit UV-A wavelengths at similar levels to visible wavelengths, with a short-wavelength cut-off of 300nm. Five separate studies compared the responses of juvenile male hamsters to long photoperiods (16h:8h L:D), short photoperiods (1
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Siddiqi, Shoaib Ahmad, Shakira Aslam, Mona Hassan, Naureen Naeem, and Shazia Bokhari. "Response of Different Species of Plants Towards Photoperiodism." Lahore Garrison University Journal of Life Sciences 2, no. 2 (2020): 153–69. http://dx.doi.org/10.54692/lgujls.2018.010227.

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Different plants respond to photoperiod in diverse manners. There are three major types of the responses of photoperiodism in plants: short-day responses (SD), long-day responses (LD) and dayneutral responses (DN). The LD plants flower most rapidly under high intensity of light provided for a large period of time while the short day plants flower rapidly only if light is provided for a short period of time. The plants with day-neutral responses, does not depends on the conditions of photoperiod in order to flower. Every plant behaves according to the length of light on its own way. In this stu
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Fitri, Walida, Cut Anisa, and Fauziyah Harahap. "Respon Bunga Pukul Empat (Mirabilis jalapa L.) terhadap Pencahayaan (Terik, Gelap, dan Ekstrem)." JURNAL BIOSHELL 14, no. 1 (2025): 94–102. https://doi.org/10.56013/bio.v14i1.3530.

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The four o'clock flower is one of many plants whose blooming time is influenced by photoperiodism. Long photoperiods can inhibit the initiation of flowering and slow down the development of flower primordia, leading to delayed blooming. This study aims to examine the photoperiodic response of four o'clock flowers (Mirabilis jalapa L.) to shorter durations of sunlight exposure. The research was conducted over one month (September–October 2024), with data collection carried out in Jalan Setia Budi, Tanjung Rejo District, Medan, from 5:00 AM to 10:00 PM. The study involved observing plants growin
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Lankinen, Pekka, Chedly Kastally, and Anneli Hoikkala. "Nanda-Hamner Curves Show Huge Latitudinal Variation but No Circadian Components in Drosophila Montana Photoperiodism." Journal of Biological Rhythms 36, no. 3 (2021): 226–38. http://dx.doi.org/10.1177/0748730421997265.

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Insect species with a wide distribution offer a great opportunity to trace latitudinal variation in the photoperiodic regulation of traits important in reproduction and stress tolerances. We measured this variation in the photoperiodic time-measuring system underlying reproductive diapause in Drosophila montana, using a Nanda-Hamner (NH) protocol. None of the study strains showed diel rhythmicity in female diapause proportions under a constant day length (12 h) and varying night lengths in photoperiods ranging from 16 to 84 h at 16°C. In the northernmost strains (above 55°N), nearly all female
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Saunders, David S. "Dormancy, Diapause, and the Role of the Circadian System in Insect Photoperiodism." Annual Review of Entomology 65, no. 1 (2020): 373–89. http://dx.doi.org/10.1146/annurev-ento-011019-025116.

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Whole-animal experiments devised to investigate possible association between photoperiodic time measurement and the circadian system (Bünning's hypothesis) are compared with more recent molecular investigations of circadian clock genes. In Sarcophaga argyrostoma and some other species, experimental cycles of light and darkness revealed a photoperiodic oscillator, set to constant phase at dusk and measuring night length repeatedly during extended periods of darkness. In some species, however, extreme dampening revealed an unrepetitive (i.e., hourglass-like) response. Rhythms of clock gene trans
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Iiams, Samantha E., Aldrin B. Lugena, Ying Zhang, Ashley N. Hayden, and Christine Merlin. "Photoperiodic and clock regulation of the vitamin A pathway in the brain mediates seasonal responsiveness in the monarch butterfly." Proceedings of the National Academy of Sciences 116, no. 50 (2019): 25214–21. http://dx.doi.org/10.1073/pnas.1913915116.

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Seasonal adaptation to changes in light:dark regimes (i.e., photoperiod) allows organisms living at temperate latitudes to anticipate environmental changes. In nearly all animals studied so far, the circadian system has been implicated in measurement and response to the photoperiod. In insects, genetic evidence further supports the involvement of several clock genes in photoperiodic responses. Yet, the key molecular pathways linking clock genes or the circadian clock to insect photoperiodic responses remain largely unknown. Here, we show that inactivating the clock in the North American monarc
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Markovskaya, E. F., and M. I. Sysoeva. "EVOLUTION OF PLANT PHOTOPERIODISM." Acta Horticulturae, no. 907 (September 2011): 189–92. http://dx.doi.org/10.17660/actahortic.2011.907.27.

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Kryvyi, V. V., and O. Y. Martsinyuk. "Photoperiodism in poultry farming." Taurian Scientific Herald, no. 122 (2021): 208–13. http://dx.doi.org/10.32851/2226-0099.2021.122.30.

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EBIHARA, Shizufumi, Shinobu YASUO, and Takashi YOSHIMURA. "Mechanisms of Vertebrate Photoperiodism." Seibutsu Butsuri 45, no. 4 (2005): 185–91. http://dx.doi.org/10.2142/biophys.45.185.

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Teses / dissertações sobre o assunto "Photoperiodism"

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Last, Kim Sven. "Photoperiodism in the semelparous polychaete Nereis virens sars." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324943.

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O’Brien, Conor Savage. "Evolution of Photoperiodism in the Threespine Stickleback Gasterosteus aculeatus." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/12104.

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xvi, 112 p. : ill. (some col.)<br>In seasonal environments, the ability to take advantage of the favorable seasons and avoid or mitigate the effects of the unfavorable ones is essential for organismal fitness. Many polar and temperate organisms use photoperiod (length of day) to time seasonal life history events because photoperiod's regular annual cycle makes it a very reliable indicator of seasonality. This reliability allows organisms to anticipate and properly prepare for seasonal change. Although photoperiodism is widespread in polar and temperate vertebrates, little is known relative to
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Robertson, Carol Elaine. "The use of quantitative RT-PCR techniques to examine the expression of PHY-genes : the role of phytochrome A in the photoperiodic induction of flowering in the long-day-plant Sinapis alba and the short-day-plant Pharbitis nil." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282609.

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Sáenz, de Miera Cristina. "The role of photoperiodic history and internal long-term timing in seasonal neuroendocrinology." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=225273.

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Seasonal physiology has evolved as an adaptive strategy to changing environments with daylength (photoperiod) used as the predominant environmental cue to suit breeding and other functions to the external season. However, seasonal physiological state is determined not only by the photoperiod that is currently in effect but also by the animal's history, allowing changes in physiology in anticipation to the seasons. Many mammals and birds show internally timed, long-term (circannual) changes in seasonal physiology, synchronised to the seasons by changing photoperiods. The importance of history-d
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Holm, Karl. "Studies on Natural Variation and Evolution of Photoperiodism in Plants." Doctoral thesis, Uppsala universitet, Evolutionär funktionsgenomik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-119269.

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Photoperiodism refers to the organism’s ability to detect and respond to seasonal changes in the daily duration of light and dark and thus constitutes one of the most significant and complex examples of the interaction between the organism and its environment. This thesis attempts to describe the prevalence of variation in a photoperiodic response, its adaptive value, and its putative genetic basis in a common cruciferous weed, Capsella bursa-pastoris (Brassicaceae). Furthermore, the thesis presents a first comprehensive comparative overview of the circadian clock mechanism in an early land pl
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Tan, Ying. "Neurospora crassa - A model system for photoperiodism and circadian rhythm research." Diss., lmu, 2003. http://nbn-resolving.de/urn:nbn:de:bvb:19-47324.

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Andersson, Håkan. "Photoperiodism in pigs : studies on timing of male puberty and melatonin /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/v90.pdf.

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Yang, Jingying. "Photoperiodism and endocrine control of reproduction in the Turkey (Meleagris gallopavo) /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487952208107354.

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LUBBERS, EDWARD LAWRENCE. "CHARACTERIZATION AND INHERITANCE OF PHOTOPERIODISM IN GUAR, CYAMOPSIS TETRAGONOLOBA (L.) TAUB." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184079.

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Three hundred and thirty lines of guar (Cyamopsis tetragonoloba (L.) taub.) were planted in five locations throughout central and southwestern United States to find diverse photoperiod response types for closer physiological and genetic study. Dates of planting studies were done in 1982 and 1983 in hopes that the photoperiod responses would be obvious in field conditions but they were not. The 1982 dates of planting studies in Arizona, Kansas, and Texas indicated that the date of planting was more important than the selection of cultivar in expectations of high yield even though cultivar selec
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Mathias, Derrick Kenneth. "The evolution of a seasonal adaptation in the pitcher-plant mosquito, Wyeomyia smithii /." view abstract or download file of text, 2006. http://proquest.umi.com/pqdweb?did=1276394641&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.

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Thesis (Ph. D.)--University of Oregon, 2006.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 96-103). Also available for download via the World Wide Web; free to University of Oregon users.
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Livros sobre o assunto "Photoperiodism"

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Joe, Nelson Randy, Denlinger David L, and Somers David E. 1954-, eds. Photoperiodism: The biological calendar. Oxford University Press, 2009.

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Foundation, Ciba, ed. Photoperiodism, melatonin and the pineal. Pitman, 1985.

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J, Lumsden P., and Millar A. J, eds. Biological rhythms and photoperiodism in plants. Bios Scientific Publishers, 1998.

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Ebihara, Shizufumi, and Takeshi Izawa. Kōshūsei no bunshi seibutsugaku. Maruzen Shuppan, 2012.

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M, Reppert Steven, ed. Development of circadian rhythmicity and photoperiodism in mammals. Perinatology Press, 1989.

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Evered, David, and Sarah Clark, eds. Ciba Foundation Symposium 117 - Photoperiodism, Melatonin and the Pineal. John Wiley & Sons, Ltd., 1985. http://dx.doi.org/10.1002/9780470720981.

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Zaslavskiĭ, V. A. Insect development: Photoperiodic and temperature control. Edited by Veerman A. Springer-Verlag, 1988.

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H, Stetson Milton, and Binkley Sue Ann 1944-, eds. Processing of environmental information in vertebrates. Springer-Verlag, 1988.

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Farmelectric workshop (1988 Bangor, Wales). Photoperiodic manipulation of cattle production: Proceedings of the Farmelectric workshop, held 6th September, 1988. University of Wales, 1988.

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Khmeleva, N. N. Fotoperiodizm vodnykh bespozvonochnykh. "Navuka i tėkhnika", 1991.

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Capítulos de livros sobre o assunto "Photoperiodism"

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Frank, J. Howard, J. Howard Frank, Michael C. Thomas, et al. "Photoperiodism." In Encyclopedia of Entomology. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_2925.

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Salisbury, Frank B. "Photoperiodism." In Horticultural Reviews. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118060773.ch3.

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Gorman, Michael R., Bruce D. Goldman, and Irving Zucker. "Mammalian Photoperiodism." In Handbook of Behavioral Neurobiology. Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1201-1_19.

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Chemineau, Philippe, José Alfonso Abecia, and José Alberto Delgadillo. "Photoperiodism and Photoperiodic Treatments in Small Ruminants." In Encyclopedia of Livestock Medicine for Large Animal and Poultry Production. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-52133-1_223-1.

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Follett, B. K., R. G. Foster, and T. J. Nicholls. "Photoperiodism in Birds." In Ciba Foundation Symposium 117 - Photoperiodism, Melatonin and the Pineal. John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720981.ch7.

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Lumsden, P. J. "Photoperiodism in Plants." In Biological Rhythms. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-06085-8_15.

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Moore-Ede, Martin C., and Margaret L. Moline. "Circadian Rhythms and Photoperiodism." In Ciba Foundation Symposium 117 - Photoperiodism, Melatonin and the Pineal. John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720981.ch3.

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Goto, Shin G. "Molecular Mechanisms of Photoperiodism." In Insect Chronobiology. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0726-7_13.

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Shiga, Sakiko. "Neural Mechanism of Photoperiodism." In Insect Chronobiology. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0726-7_14.

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Numata, Hideharu. "General Features of Photoperiodism." In Insect Chronobiology. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0726-7_12.

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Trabalhos de conferências sobre o assunto "Photoperiodism"

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Liu, Wei. "Illuminating the Plant Calendar: Gene Regulatory Networks Controlling Photoperiodism." In ASPB PLANT BIOLOGY 2020. ASPB, 2020. http://dx.doi.org/10.46678/pb.20.989645.

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Xi, Jili. "Input neuronal pathways for photoperiodism in the bean bug,Riptortus pedestris." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.110622.

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Goto, Shin G. "The role of the circadian clock in photoperiodism of the bean bugRiptortus pedestris." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.91465.

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Umar, Lazuardi, Febyola Aswandi, Tetty Marta Linda, Agustina Wati, and Rahmondia Nanda Setiadi. "Sensitivity and photoperiodism response of algae-based biosensor using red and blue LED spectrums." In THE 4TH INTERNATIONAL CONFERENCE ON MATHEMATICS AND SCIENCE EDUCATION (ICoMSE) 2020: Innovative Research in Science and Mathematics Education in The Disruptive Era. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0037762.

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Mukai, Ayumu. "RNAi targeted to the circadian clock geneperioddisrupts photoperiodism of the jewel wasp,Nasonia vitripennis." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.110889.

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He, Haimin. "Photoperiodism of diapause induction in the mothThyrassia penangae: Measuring day length rather than night length." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.108653.

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Perez, Shirly Lara, Rafael Ferro, Kate Cristina Blanco, and Vanderlei Salvador Bagnato. "Study of optimized processes in controlled environment agriculture." In Latin America Optics and Photonics Conference. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/laop.2022.tu5a.5.

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Controlled environment and photoperiods with low light intensity using LEDs in a hydroponic system chamber were used to optimize the growth of mini romaine lettuce from seed to adult stage in 30 days.
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Jianjun, Du, Liu Shuping, Liu Weihong, Chen Tao, and Song Changbin. "The application of photoperiodic control of the plant flowering." In 2016 13th China International Forum on Solid State Lighting (SSLChina). IEEE, 2016. http://dx.doi.org/10.1109/sslchina.2016.7804361.

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Wu, Bulah Chia-hsiang. "Circadian clock, photoperiodic timer and genes inPyrrhocoris apterusfrom different latitudes." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.113536.

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Li, Rui, Zhiyu Ma, Yinghui Mu, Hongyu Wei, Lixue Zhu, and Wenqi Tang. "Morphology, biomass and quality variation of Anoectochilus roxburghii under different photoperiods." In 2020 17th China International Forum on Solid State Lighting & 2020 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS). IEEE, 2020. http://dx.doi.org/10.1109/sslchinaifws51786.2020.9308817.

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Relatórios de organizações sobre o assunto "Photoperiodism"

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Anthony R. Cashmore. Light responses in Photoperiodism in Arabidopsis thaliana. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/893226.

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Kadman-Zahavi, Avishag, Theodore Tibbitts, and Benjamin Steinitz. Testing the Efficiency of Different Lamps and Illumination Regeimes for Photoperiodic Irradiation of Agricultural Crops. United States Department of Agriculture, 1987. http://dx.doi.org/10.32747/1987.7594409.bard.

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Samach, Alon, Douglas Cook, and Jaime Kigel. Molecular mechanisms of plant reproductive adaptation to aridity gradients. United States Department of Agriculture, 2008. http://dx.doi.org/10.32747/2008.7696513.bard.

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Annual plants have developed a range of different mechanisms to avoid flowering (exposure of reproductive organs to the environment) under adverse environmental conditions. Seasonal environmental events such as gradual changes in day length and temperature affect the timing of transition to flowering in many annual and perennial plants. Research in Arabidopsis and additional species suggest that some environmental signals converge on transcriptional regulation of common floral integrators such as FLOWERING LOCUS T (FT). Here we studied environmental induction of flowering in the model legume M
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Weiss, David, and Neil Olszewski. Manipulation of GA Levels and GA Signal Transduction in Anthers to Generate Male Sterility. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7580678.bard.

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The original objectives of the research were: i. To study the role of GA in anther development, ii. To manipulate GA and/or GA signal transduction levels in the anthers in order to generate male sterility. iii. To characterize the GA signal transduction repressor, SPY. Previous studies have suggested that gibberellins (GAs) are required for normal anther development. In this work, we studied the role of GA in the regulation of anther development in petunia. When plants were treated with the GA-biosynthesis inhibitor paclobutrazol, anther development was arrested. Microscopic analysis of these
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