Crecimiento y eficiencia fotoquímica del fotosistema II en plantas de fresa (Fragaria sp.) afectadas por la calidad de la luz: implicaciones agronómicas
Photomorphogenesis is any change in form or function of an organism occurring in response to changes in the light environment. Light quality is mainly sensed by the presence of different light receptors specific for different wavelengths. The influence of light quality on the growth and photochemi-c...
- Autores:
-
Casierra Posada, Fánor
Peña Olmos, Jaime E.
Ulrichs, Christian
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2011
- Institución:
- Universidad de Ciencias Aplicadas y Ambientales U.D.C.A
- Repositorio:
- Repositorio Institucional UDCA
- Idioma:
- spa
- OAI Identifier:
- oai:repository.udca.edu.co:11158/2191
- Acceso en línea:
- https://revistas.udca.edu.co/index.php/ruadc/article/view/774
- Palabra clave:
- Fotomorfogénesis
Material seca
Partición de biomasa
Luz coloreada
fv/fm
Fluorescencia mínima
Fluorescencia máxima
Fotosistema II
Fragaria
Fluorescencia
- Rights
- openAccess
- License
- Derechos Reservados - Universidad de Ciencias Aplicadas y Ambientales
| Summary: | Photomorphogenesis is any change in form or function of an organism occurring in response to changes in the light environment. Light quality is mainly sensed by the presence of different light receptors specific for different wavelengths. The influence of light quality on the growth and photochemi-cal efficiency of photosystem II (PSII) in strawberry plants (Fragaria sp., cv. Chandler) was examined in a factorial set up, under greenhouse in Tunja / Colombia. Plants grew under di-verse light qualities (yellow, green, blue, red, transparent, and control without colored cover) provided by polypropylene fil-ter films. Determinations of minimum (f0), maximum (fm), variable (fv), and terminal (ft) fluorescence and maximum photochemical efficiency (fv/fm) of dark-adapted leaves were done 32 weeks after the transplant. Related to growth, control plants recorded highest dry matter and specific leaf weight. Plants growing under the red filter developed highest leaf area. The green film reduced the growth. The color films changed the dry matter partitioning patterns in the plants organs, specially the green filter. filtered light affected the chlorophyll fluorescence variables, related to control plants. Regards to control plants, fv , fm and ft were higher in plants growing under all covers. While f0 was higher under the transparent and yellow films, fv /fm was lower under these covers. The results were discussed in relation to possible im-plications for appropriate agronomic practices. |
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