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Action spectrum for the effect of day-extensions on flowering and apex elongation in green, light-grown wheat (Triticum aestivum L.) (1989)

Carr-Smith, H. D. ; Johnson, C. B. ; Thomas, B.

Springer

Planta 179 (1989), S. 428-432

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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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