Skip to main content

Research Repository

See what's under the surface

Advanced Search

Linear discriminant analysis reveals differences in root architecture in wheat seedlings by nitrogen uptake efficiency

Kenobi, Kim; Atkinson, Jonathan A.; Wells, Darren M.; Gaju, Oorbessy; deSilva, Jayalath G.; Foulkes, M. John; Dryden, Ian L.; Wood, Andrew T.A.; Bennett, Malcolm J.

Authors

Kim Kenobi kik10@aber.ac.uk

Jonathan A. Atkinson sbzjaa@exmail.nottingham.ac.uk

Darren M. Wells darren.wells@nottingham.ac.uk

Oorbessy Gaju Oorbessy.Gaju@nottingham.ac.uk , Oorbessy.Gaju@anu.edu.au

Jayalath G. deSilva Jayalath.De_silva@nottingham.ac.uk

M. John Foulkes John.Foulkes@nottingham.ac.uk

Ian L. Dryden ian.dryden@nottingham.ac.uk

Andrew T.A. Wood Andrew.Wood@nottingham.ac.uk



Abstract

Root architecture impacts water and nutrient uptake efficiency. Identifying exactly which root architectural properties influence these agronomic traits can prove challenging. In this paper approximately 300 wheat plants were divided into four groups using two binary classifications, high vs. low nitrogen uptake efficiency (NUpE), and high vs. low nitrate in medium. The root system architecture for each wheat plant was captured using 16 quantitative variables. The multivariate analysis tool, linear discriminant analysis, was used to construct composite variables, each a linear combination of the original variables, such that the score of the wheat plants on the new variables showed the maximum between-group variability. The results show that the distribution of root system architecture traits differ between low and high NUpE wheat plants and, less strongly, between low NUpE wheat plants grown on low vs. high nitrate media.

Journal Article Type Article
Publication Date Oct 13, 2017
Journal Journal of Experimental Botany
Print ISSN 0022-0957
Electronic ISSN 1460-2431
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 68
Issue 17
APA6 Citation Kenobi, K., Atkinson, J. A., Wells, D. M., Gaju, O., deSilva, J. G., Foulkes, M. J., …Bennett, M. J. (2017). Linear discriminant analysis reveals differences in root architecture in wheat seedlings by nitrogen uptake efficiency. Journal of Experimental Botany, 68(17), https://doi.org/10.1093/jxb/erx300
DOI https://doi.org/10.1093/jxb/erx300
Keywords Linear discriminant analysis, Mahalanobis distance, Nitrogen uptake efficiency, Plant phenotyping, Root system architecture, Watkins lines, Wheat root biology
Publisher URL https://academic.oup.com/jxb/article/4243598
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

Files

erx300.pdf (3 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations

;