photoperiodism [fōt΄ō pir′ēə dis′ə tēfōt΄ō pir′ē əd iz΄əm]
Biol. the behavioral or physiological reaction of an organism to variations in the duration of light, as, in plants, by flowering or ceasing to flower, or, in certain animals, by changing the daily cycle of activities: also photoperiodicity [fōt΄ō pir′ēə dis′ə tē]

English World dictionary. . 2014.

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  • Photoperiodism — is the physiological reaction of organisms to the length of day or night. It occurs in plants and animals. Contents 1 In plants 1.1 Long day plants 1.2 Short day plants 1.3 …   Wikipedia

  • photoperiodism — photoperiodism. См. фотопериодизм. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • photoperiodism — 1920, from photoperiod (1920), from PHOTO (Cf. photo ) + PERIOD (Cf. period) …   Etymology dictionary

  • photoperiodism — /foh teuh pear ee euh diz euhm/, n. Biol. the response, as affecting growth or reproduction, of an organism to the length of exposure to light in a 24 hour period. Also called photoperiodicity /foh toh pear ee euh dis i tee/. [1915 20;… …   Universalium

  • photoperiodism — fotoperiodizmas statusas T sritis ekologija ir aplinkotyra apibrėžtis Augalų vystymosi priklausomybė nuo dienos ir nakties ilgumo santykio. atitikmenys: angl. photoperiodism vok. Photoperiodismus, m rus. фотопериодизм, m …   Ekologijos terminų aiškinamasis žodynas

  • photoperiodism — fotoperiodizmas statusas T sritis augalininkystė apibrėžtis Genetiškai reguliuojama organizmų reakcija į paros šviesos (dienos ir nakties ilgio santykio) kitimą. atitikmenys: angl. photoperiodism rus. фотопериодизм ryšiai: sinonimas – šviesoveika …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • photoperiodism — noun Date: circa 1911 a plant or animal s response or capacity to respond to photoperiod …   New Collegiate Dictionary

  • photoperiodism — Events triggered by duration of illumination or pattern of light/dark cycles: often the wavelength of the illuminating light is important as for example in control of circadian rhythm in plants. See phytochromes …   Dictionary of molecular biology

  • photoperiodism — noun the growth, development and other responses of plants and animals according to the length of day and/or night See Also: photoperiodic …   Wiktionary

  • photoperiodism — The periodic (seasonal or diurnal) activities, behavior, or changes in plants or animals brought about by the action of light. * * * pho·to·pe·ri·od·ism pir ē ə .diz əm also pho·to·pe·ri·od·ic·i·ty .pir ē ə dis ət ē n, pl isms also ties the… …   Medical dictionary

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