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- Title
Anaesthetic stimulation of Amaranthus albus seed germination: Interaction with phytochrome.
- Authors
Chadoeuf-Hannel, Régine; Taylorson, Ray B.
- Abstract
Exposure to solutions of acetaldehyde, ethanol and n-propanol ranging from 0.06 to 0.6 M for about 5 h induced photosensitivity in imbibed Amaranthus albus L. seeds which normally would be insensitive. When the seeds were made dormant by pretreatment with continuous incandescent light for 24 h, n-propanol promoted germination up to 80% provided the active form of phytochrome was present. Pretreatment of seeds with continuous incandescent light terminated by far-red reduced the n-propanol-stimulated germination to about 33% which could again be increased by a red irradiation, Red light and n-propanol also interacted in seeds made insensitive to red treatment by 20°C in darkness. Loss of the n-propanol stimulation resulted from treatment in continuous far-red for 2 or more days, even when a red irradiance and n-propanol treatment were combined. It is suggested that n-propanol may act at a membrane level.
- Subjects
AMARANTHS; GERMINATION; SEED dormancy; INCANDESCENT electric lighting; PHYTOCHROMES; ACETALDEHYDE; PROPANOLS
- Publication
Physiologia Plantarum, 1985, Vol 65, Issue 4, p451
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1985.tb08672.x