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Evaluating methods for storability assessment and determination of vitality status of container grown Norway spruce transplants after frozen storage
Dalarna University, School of Technology and Business Studies, Energy Technology. SLU.
Dalarna University, School of Technology and Business Studies, Forest and Wood Technology.
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2019 (English)In: Scandinavian Journal of Forest Research, ISSN 0282-7581, E-ISSN 1651-1891, Vol. 34, no 6, p. 417-426Article in journal (Refereed) Published
Abstract [en]

Autumn sown small seedlings for later transplanting into large containers have been introduced in Swedish forest tree nurseries. Containerized transplants of Norway spruce (Picea abies (L.) Karst.) from three Swedish nurseries were frozen stored during the autumn of 2014 to find out storability and post-storage vitality. Seedling storability was determined by measuring electrolyte leakage after freezing shoots to −25°C (SELdiff−25), by measurements of dry matter content (DMC) of seedling shoots and by the commercial molecular test ColdNSure™. Vitality of seedlings after storage was determined by measuring the leakage of electrolytes from shoots (SEL), and seedlings were also tested in regrowth tests. All three methods for storability assessment gave similar predictions, except in one case where DMC showed “not storable” for successfully stored seedlings. Our results indicated that young transplants can be successfully short term stored before reaching the target levels for safe long-term storage of conventional seedlings. Early storage of young transplants resulted in low post-storage survival and vitality expressed as root growth capacity and shoot electrolyte leakage (SEL). A prolonged duration in storage generally resulted in lower survival as well as lower root growth capacity and higher levels of SEL, especially for seedlings stored at earlier dates. 

Place, publisher, year, edition, pages
2019. Vol. 34, no 6, p. 417-426
Keywords [en]
Containerized young transplants, freezing tolerance, gene activity, Picea abies, seedling quality, shoot electrolyte leakage, storage duration
National Category
Forest Science
Research subject
Energy and Built Environments
Identifiers
URN: urn:nbn:se:du-30527DOI: 10.1080/02827581.2019.1622036ISI: 000480619900002Scopus ID: 2-s2.0-85067491108OAI: oai:DiVA.org:du-30527DiVA, id: diva2:1333259
Available from: 2019-07-01 Created: 2019-07-01 Last updated: 2019-08-29Bibliographically approved

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Wallin, ElisabethStattin, EvaLindström, Anders
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CiteExportLink to record
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Citation style
  • apa
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Output format
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