Canadian Forest Service Publications

A photoperiod response in germination of western hemlock seeds. 1973. Edwards, D.G.W.; Olsen, P.E. Canadian Journal of Forest Research 3(1): 146-148.

Year: 1973

Issued by: Pacific Forestry Centre

Catalog ID: 28617

Language: English

Availability: PDF (request by e-mail)

Available from the Journal's Web site.
DOI: 10.1139/x73-020

† This site may require a fee

Mark record


Unstratified and stratified seeds of western hemlock (Tsugaheterophylla) germinated fastest under 4-h photoperiods and slowest under 24-h photoperiods at 20 °C. No differences were found between total darkness and an 8-h photoperiod. Stratification tended to reduce the degree of response to photoperiod. Several indices of germination rate and capacity were compared.