du.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Light shock stress after outdoor sunlight exposure in seedlings of picea abies (L.) Karst. and Pinus sylvestris L. pre-cultivated under LEDs-possible mitigation treatments and their energy consumption
Högskolan Dalarna, Akademin Industri och samhälle, Energiteknik. Uppsala Universitet.ORCID-id: 0000-0001-6805-2112
Högskolan Dalarna, Akademin Industri och samhälle, Skog- och träteknik.
2020 (Engelska)Ingår i: Forests, ISSN 1999-4907, E-ISSN 1999-4907, Vol. 11, nr 3, artikel-id 354Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Year-round cultivation under light emitting diodes (LEDs) has gained interest in boreal forest regions like Fenno-Scandinavia. This concept offers forest nurseries an option to increase seedling production normally restricted by the short vegetation period and the climate conditions. In contrast to some horticultural crops which can be cultivated entirely under LEDs without sunlight, forest seedlings need to be transplanted outdoors in the nursery at a very young age before being outplanted in the field. Juvenile plants are less efficient using absorbed light and dissipating excess energy making them prone to photoinhibition at conditions that usually do not harm mature plants. The outdoor transfer can cause stress in the seedlings due to high sunlight intensity and exposure to ultraviolet (UV) radiation not typically present in the spectra of LED lamps. This study tested possible treatments for mitigating light shock stress in seedlings of Picea abies (L.) Karst. and Pinus sylvestris L. transplanted from indoor cultivation under LEDs to outdoor sunlight exposure. Three sowings were carried out in 2014 (May and June) and 2015 (May) cultivating the seedlings during five weeks under LED lights only. Afterwards, higher light intensity or UV radiation treatments were applied during one week in order to adapt the seedlings to natural outdoor conditions. After transplanting a transition phase was introduced using shading cloths for one or three weeks as outdoor treatments for light shock mitigation. Chlorophyll fluorescence (ChlF) levels and CO2 assimilation rates were measured before transplanting and followed outdoors during 5 weeks. The ChlF results revealed stress symptoms in the photoreceptors during the first days after transplanting. After five weeks outdoors the ChlF levels had recovered and the light saturation points had shifted, allowing higher CO2 assimilation rates. By the end of the vegetation period the morphological attributes showed no major differences between treatments. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Ort, förlag, år, upplaga, sidor
MDPI AG , 2020. Vol. 11, nr 3, artikel-id 354
Nyckelord [en]
Forest tree seedlings, Light emitting diodes, Light quality and intensity, Light-shock, Photoinhibition, Year-round production
Nationell ämneskategori
Lantbruksvetenskap, skogsbruk och fiske
Forskningsämne
Energi och samhällsbyggnad
Identifikatorer
URN: urn:nbn:se:du-32385DOI: 10.3390/f11030354Scopus ID: 2-s2.0-85082336610OAI: oai:DiVA.org:du-32385DiVA, id: diva2:1422299
Tillgänglig från: 2020-04-07 Skapad: 2020-04-07 Senast uppdaterad: 2020-04-07

Open Access i DiVA

fulltext(2593 kB)5 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 2593 kBChecksumma SHA-512
111445e12072b1ad1f9556fa3aaa9dfb6977286c79b107c7662aa0e230ffea0a1dbaeefdb8c69156977b25acdda8c01a1dd05669e9ec88eead1707e6a92bb5db
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Hernandez Velasco, MarcoMattsson, Anders

Sök vidare i DiVA

Av författaren/redaktören
Hernandez Velasco, MarcoMattsson, Anders
Av organisationen
EnergiteknikSkog- och träteknik
I samma tidskrift
Forests
Lantbruksvetenskap, skogsbruk och fiske

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 5 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 6 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf