Genetic analysis of the near-infrared spectral phenome of a global Eucalyptus species

J M O'Reilly-Wapstra; Jules S Freeman; R C Barbour; R E Vaillancourt; Brad M Potts

doi:10.1007/s11295-013-0607-y

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Genetic analysis of the near-infrared spectral phenome of a global Eucalyptus species

Journal article

Peer reviewed

Genetic analysis of the near-infrared spectral phenome of a global Eucalyptus species

J M O'Reilly-Wapstra, Jules S Freeman, R C Barbour, R E Vaillancourt and Brad M Potts

Tree Genetics & Genomes, Vol.9(4), pp.943-959

2013

DOI: https://doi.org/10.1007/s11295-013-0607-y

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Abstract

eucalyptus globulus

genetic variation

hybrid

near-infrared reflectance spectroscopy

phytochemistry

QTL

Understanding the genetic-based variability in plant phytochemical compounds provides insight into the evolutionary and ecological processes affecting those traits. In some cases, it is an advantage to quantify the holistic phytochemical profile of a sample rather than focus on individual compounds of known interest. Near-infrared (NIR) reflectance spectroscopy provides a means to rapidly characterise the holistic physicochemical profile of biological materials (known as the spectral phenome). To date,most studies examining differences in the spectral phenome between groups and species have not been conducted in such a way as to enable the quantitative genetic basis of the variation in the spectral phenome to be determined. Here, we investigate the genetic-based variation in the spectral phenome of eucalypts focussing on comparisons at multiple scales of the genetic hierarchy using a tree species of global economic importance, Eucalyptus globulus. Using foliage collected from common-environment field trials we were able to use the spectral phenome to accurately differentiate advanced generation inter-specific hybrids and their parents and examine the pattern of inheritance of the holistic chemical profile. We also found intra-specific variability in the spectralphenome at the race, sub-race and familywithin race levels, and could identify clear genomic positions influencing the spectral phenome. We have used Eucalyptus as a test system to demonstrate the general approach of using the spectral phenome ingenetic-based analyses, an approach that is readily transferrable to other plant systems.

Details

Title: Genetic analysis of the near-infrared spectral phenome of a global Eucalyptus species
Authors: J M O'Reilly-Wapstra (Author) - University of Tasmania
Jules S Freeman (Author) - University of Tasmania
R C Barbour (Author) - University of Tasmania
R E Vaillancourt (Author) - University of Tasmania
Brad M Potts (Author) - University of Tasmania
Publication details: Tree Genetics & Genomes, Vol.9(4), pp.943-959
Publisher: Springer
Date published: 2013
DOI: 10.1007/s11295-013-0607-y
ISSN: 1614-2942
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450137802621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Forestry; Genetics & Heredity; Horticulture

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