ISSN:
1432-2048
Keywords:
Action spectrum
;
Light-grown plants
;
Photoperiodism
;
Phytochrome (type I)
;
Triticum (photoperiodism)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Fluence-rate response curves for wavelengths from 640 nm to 730 nm were constructed for the day-extension promotion of flowering in green, light-grown, wheat (Triticum aestivum L., cv. Alexandria), a long-day plant. The resultant action spectrum had action maxima at 660 nm and 716 nm and resembles spectra for the high-irradiance reaction (HIR) seen in etiolated plants. Because, the HIR is thought to be controlled by type I pytochrome (that which is most abundant in etiolated tissue) our results indicate the involvement of type I phytochrome in the photomorphogenesis of a light-grown, green plant.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00397581
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