Technical Note: Handheld near infared spectroscopy for the prediction of leaf physiological status in tree seedlings

Paul Warburton; Jeremy T Brawner; Roger Meder

doi:10.1255/jnirs.1137

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Technical Note: Handheld near infared spectroscopy for the prediction of leaf physiological status in tree seedlings

Journal article

Peer reviewed

Technical Note: Handheld near infared spectroscopy for the prediction of leaf physiological status in tree seedlings

Paul Warburton, Jeremy T Brawner and Roger Meder

Journal of Near Infrared Spectroscopy, Vol.22(6), pp.433-438

2014

DOI: https://doi.org/10.1255/jnirs.1137

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Abstract

leaf water potential

water content

stomatal conductance

physiology

Eucalyptus grandis

portable NIR

Near infrared spectra obtained from leaf surfaces of Eucalyptus grandis seedlings were calibrated against physiological measurements of plant water stress, namely: relative water content, leaf water potential and stomatal conductance. In a controlled environment facility, spectral data were obtained from both abaxial and adaxial leaf surfaces as well as upper and lower leaves in the stem. The strongest coefficients of determination using cross-validation were r2CV = 0.85 for relative water content, r2CV = 0.74 for leaf water potential and r2CV = 0.80 for stomatal conductance. The use of a portable NIR instrument enabled the rapid assessment of physiological status of seedlings and would enable in situ, non-destructive, high-throughput monitoring of drought and recovery in the field. This would be particularly useful for non-destructive measurement in longitudinal studies.

Details

Title: Technical Note: Handheld near infared spectroscopy for the prediction of leaf physiological status in tree seedlings
Authors: Paul Warburton (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Jeremy T Brawner (Author) - University of the Sunshine Coast
Roger Meder (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Journal of Near Infrared Spectroscopy, Vol.22(6), pp.433-438
Publisher: N I R Publications
Date published: 2014
DOI: 10.1255/jnirs.1137
ISSN: 0967-0335
Organisation Unit: University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
Language: English
Record Identifier: 99449176302621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Chemistry, Applied; Spectroscopy