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Storability and freezing tolerance of Douglas fir and Norway spruce seedlings grown in mid-Sweden
Dept of Forestry and Wood technology, Linneus University, Växjö, Sweden.
Asa Forest Research Station, Swedish University of Agricultural Sciences, Lammhult Sweden.
Dalarna University, School of Technology and Business Studies, Forest and Wood Technology.
2017 (English)In: Scandinavian Journal of Forest Research, ISSN 0282-7581, E-ISSN 1651-1891, Vol. 32, no 1, 30-38 p.Article in journal (Refereed) Published
Abstract [en]

Climate change provides new challenges to Nordic forestry. Use of non-native species, such as Douglas fir, can be a means of mitigating the effects of climate change and meeting the growing demand for biomass. When Douglas fir is grown in Sweden, it is several degrees of latitude north of its normal range, which can affect timing of growth cessation, hardening of seedlings, and seedling storability. The objective of this study was to investigate tolerance to freezing and sub-zero storability of seven Douglas fir provenances and make comparisons with the native Norway spruce. Freezing tolerance and storability were evaluated by measuring the electrolytic leakage of shoots and roots after freezing, complemented with a three-week cultivation test after storage. All provenances of Douglas fir used in this study were able to tolerate frozen storage at −4°C for about four months. Norway spruce and the interior Douglas fir provenance, Three Valley, could be stored earlier in the autumn than the southern coastal Douglas fir provenances. Consequently, it should be possible to store Douglas fir seedlings with the same routines as for Norway spruce.

Place, publisher, year, edition, pages
Taylor & Francis Group, 2017. Vol. 32, no 1, 30-38 p.
Keyword [en]
Frost tolerance, frozen storage, containerized seedlings, non-native species, nursery routines, climate change, carbon sink, Pseudottsuga menziesii, Picea abies
National Category
Forest Science
Research subject
Energy, Forests and Built Environments, Metoder för att fastställa skogsplantors status, KK-projekt (Hög 12)
URN: urn:nbn:se:du-21464DOI: 10.1080/02827581.2016.1183704ISI: 000389046100004OAI: oai:DiVA.org:du-21464DiVA: diva2:929004
Available from: 2016-05-17 Created: 2016-05-17 Last updated: 2017-01-23Bibliographically approved

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