Hyperspectral Canopy Sensing of Wheat Septoria Tritici Blotch Disease

Frontiers in Plant Science
Kang YuAndreas Hund

Abstract

Producing quantitative and reliable measures of crop disease is essential for resistance breeding, but is challenging and time consuming using traditional phenotyping methods. Hyperspectral remote sensing has shown potential for the detection of plant diseases, but its utility for phenotyping large and diverse populations of plants under field conditions requires further evaluation. In this study, we collected canopy hyperspectral data from 335 wheat varieties using a spectroradiometer, and we investigated the use of canopy reflectance for detecting the Septoria tritici blotch (STB) disease and for quantifying the severity of infection. Canopy- and leaf-level infection metrics of STB based on traditional visual assessments and automated analyses of leaf images were used as ground truth data. Results showed (i) that canopy reflectance and the selected spectral indices show promise for quantifying STB infections, and (ii) that the normalized difference water index (NDWI) showed the best performance in detecting STB compared to other spectral indices. Moreover, partial least squares (PLS) regression models allowed for an improvement in the prediction of STB metrics. The PLS discriminant analysis (PLSDA) model calibrated based on t...Continue Reading

References

Dec 1, 2007·Proceedings of the National Academy of Sciences of the United States of America·Rosa M RiveroEduardo Blumwald
Nov 15, 2011·Trends in Plant Science·Robert T Furbank, Mark Tester
Jun 25, 2014·Trends in Plant Science·Aoife O'DriscollEwen Mullins
Mar 15, 2015·Plant Methods·Achim WalterAndreas Hund
Jun 21, 2015·Fungal Genetics and Biology : FG & B·Helen Fones, Sarah Gurr
Jun 21, 2015·Fungal Genetics and Biology : FG & B·Stefano F F TorrianiMikaël Courbot
Aug 28, 2016·Journal of Experimental Botany·Erich-Christian OerkeReinhard Toepfer
Nov 4, 2017·PLoS Computational Biology·Florian RohartKim-Anh Lê Cao
Feb 1, 2016·Functional Plant Biology : FPB·Norbert KirchgessnerAchim Walter

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Citations

Feb 13, 2020·Frontiers in Plant Science·Jonas AndereggAndreas Hund
Feb 16, 2021·Frontiers in Plant Science·Angelica GalieniMichele Pisante
May 21, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Pallavi SinhaRajeev K Varshney

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Software Mentioned

R Core Team
DRIFTER
PLACL
R
PRESS
mixOmics
r package “ pls

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