Seed Germination of Fraser Fir: Timing of Irradiation and Involvement of Phytochrome

Autor:	Paul H. Henry, Frank A. Blazich
Rok vydání:	1990
Předmět:	Phytochrome Fraser fir Germination Botany Genetics Plant physiology Irradiation Horticulture Biology biology.organism_classification Degree (temperature)
Zdroj:	Journal of the American Society for Horticultural Science. 115:231-234
ISSN:	2327-9788 0003-1062
DOI:	10.21273/jashs.115.2.231
Popis:	Two experiments investigated the relationship of light and temperature in seed germination of Fraser fir [Abies fraseri (Pursh) Poir.]. Irradiation during the warm portion of 9/15 hr thermoperiod of 20/10C and 30/20C increased germination percentages after 42 days, and the degree of stimulation depended on the timing of the light exposures. A 1-hr exposure was most effective during the latter part of the warm portion of the thermoperiods, and varying the time of irradiation had the greatest effect at 20/10C. The involvement of phytochrome in this photomorphogenic response was ascertained by demonstration of red/far-red reversibility.
Databáze:	OpenAIRE
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