Document Detail

Fast, nondestructive measurement of frost hardiness in conifer seedlings by VIS+NIR spectroscopy.
MedLine Citation:
PMID:  11470661     Owner:  NLM     Status:  MEDLINE    
Frost hardiness development from mid-August to mid-November was evaluated in seedlings of three provenances of Norway spruce (Picea abies (L.) Karst.) and three provenances of Scots pine (Pinus sylvestris L.) raised at nurseries in north, central and south Sweden. Measurements of the visible + near infrared (VIS+NIR) spectra of shoots were made simultaneously with estimates of frost hardiness based on electrolyte leakage following artificial freezing. Nine physiological variables known to influence frost hardiness were measured throughout the experiment. Multivariate analysis showed that VIS+NIR spectra explained 69% and 72% of the variation in frost hardiness in Scots pine and Norway spruce, respectively. Stem lignification, dry weight fraction, and starch, glucose, fructose, galactose, sucrose, raffinose and stachyose concentrations together explained 80% and 85% of the variation in frost hardiness in Scots pine and Norway spruce, respectively when used as independent X variables in a partial least squares model. These physiological variables could be related to varying degrees with variation in the VIS+NIR spectra. We conclude that VIS+NIR spectroscopy provides a rapid nondestructive technique for measuring frost hardiness in conifer seedlings based on causal relationships between the spectra and the physiology of seedling frost hardiness.
L G Sundblad; M Andersson; P Geladi; A Salomonson; M Sjöström
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Tree physiology     Volume:  21     ISSN:  0829-318X     ISO Abbreviation:  Tree Physiol.     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-07-25     Completed Date:  2002-04-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100955338     Medline TA:  Tree Physiol     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  751-7     Citation Subset:  IM    
Forestry Research Institute of Sweden, Box 3, SE-918 21 Sävar, Sweden.
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MeSH Terms
Picea / physiology*
Pinus / physiology*
Spectroscopy, Near-Infrared
Spectrum Analysis
Trees / physiology*

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