Nature of light requirement for the flowering of Chenopodium rubrum L. (Ecotype 60° 47′ N)
- 1 January 1977
- journal article
- research article
- Published by Springer Nature in Planta
- Vol. 133 (2), 97-102
- https://doi.org/10.1007/bf00391904
Abstract
Seedlings of the short-day plant, Chenopodium rubrum L. (Ecotype 60° 47′ N) were irradiated with different intensities and qualities of light for 24 h preceding a single inductive dark period (12 h). Our data shows that a relatively low intensity incandescent light (35–100 ft. c.) is not effective as the photoperiod for flowering. The above effect is not due to a requirement for a relatively high level of photosynthesis. Our results suggest a definite promotory role of a blue High Energy Reaction (HER). We could not demonstrate the involvement of a far-red HER. We suggest that ineffectiveness of far-red may have been due to establishment of rather low Phytochrome, P FR , levels, suboptimal for flowering. A certain critical level of P FR (30–40%, that presumably established by blue light) seems to be necessary for photoreactions involved in flowering of C. rubrum. There are indications in our experiments of the operation of a red radiation mediated flower inhibitory photoreaction.Keywords
This publication has 19 references indexed in Scilit:
- Light maintains High Levels of Phytochrome IntermediatesNature New Biology, 1972
- Aspects of phytochrome decay in etiolated seedlings under continuous IlluminationPlanta, 1972
- Flower Induction and the Florigen ConceptAnnual Review of Plant Physiology, 1971
- THE HIGH-ENERGY LIGHT ACTION CONTROLLING PLANT RESPONSES AND DEVELOPMENTProceedings of the National Academy of Sciences, 1969
- INTERACTIONS BETWEEN LIGHT AND CIRCADIAN RHYTHMS IN PLANT PHOTOPERIODISMPhotochemistry and Photobiology, 1969
- CIRCADIAN RHYTHMIC FLOWERING RESPONSES IN CHENOPODIUM RUBRUM: EFFECTS OF GLUCOSE AND SUCROSECanadian Journal of Botany, 1967
- The role of light in suppressing hypocotyl elongation in lettuce and PetuniaPlanta, 1965
- ACTTON SPECTRA OF PHYTOCHROME IN VITRO*Photochemistry and Photobiology, 1964
- Über die untere kritische Tageslänge bei der Kurztagspflanze Kalanchoë BlossfeldianaPlanta, 1947
- Interrelation of Light and Darkness in Photoperiodic InductionBotanical Gazette, 1940