| photoperiodism |
Response of an organism to the relative duration of dark and light periods. In plants, photoperiodism may affect flower or seed development, vegetative growth, formation of bulbs and tubers, leaf shape, character and extent of branching, abscission (dropping of vegetative growth, ie, protective seed sheath) and leaf fall, root development, dormancy, and death.
출처: amsglossary.allenpress.com/glossary/browse
|
|---|---|
| photochemical reaction |
A chemical reaction that involves either the absorption or emission of radiation. The absorption of an ultraviolet photon often provides the energy required to break chemical bonds and initiate a reaction sequence. Examples of photochemical reactions are the photolysis of nitrogen dioxide, NO 2 NO + O, or ozone, O 3 O 2 + O. The latter reaction leads to the initiation of chain reactions that cause the breakdown of hydrocarbons and other pollutants in the troposphere. ...
출처: amsglossary.allenpress.com/glossary/browse
|
| photopic vision |
Vision mediated by cones at normal levels of luminance. Cones allow color vision. See foveal vision.
출처: amsglossary.allenpress.com/glossary/browse
|
| photography |
the art or proccess of making pictures by means of a camera that directs the image of an object into film made sensetive to light.
출처: library.thinkquest.org/6275/Glossary.html
|
| photomorphogenesis |
Changes in growth and development in response to light. These occur throughout the plant life cycle, from seed germination, and seedling de-etiolation, through vegetative architectural adaptations and flower induction, and are observable at all levels of organization, from visible phenotype to gene expression.
출처: www.nature.com/nrm/journal/v3/n2/glossary/nrm728_g...
|