High-throughput analysis of leaf physiological and chemical traits with VIS-NIR-SWIR spectroscopy: a case study with a maize diversity panel

Plant Methods
Yufeng GeJames C Schnable

Abstract

Hyperspectral reflectance data in the visible, near infrared and shortwave infrared range (VIS-NIR-SWIR, 400-2500 nm) are commonly used to nondestructively measure plant leaf properties. We investigated the usefulness of VIS-NIR-SWIR as a high-throughput tool to measure six leaf properties of maize plants including chlorophyll content (CHL), leaf water content (LWC), specific leaf area (SLA), nitrogen (N), phosphorus (P), and potassium (K). This assessment was performed using the lines of the maize diversity panel. Data were collected from plants grown in greenhouse condition, as well as in the field under two nitrogen application regimes. Leaf-level hyperspectral data were collected with a VIS-NIR-SWIR spectroradiometer at tasseling. Two multivariate modeling approaches, partial least squares regression (PLSR) and support vector regression (SVR), were employed to estimate the leaf properties from hyperspectral data. Several common vegetation indices (VIs: GNDVI, RENDVI, and NDWI), which were calculated from hyperspectral data, were also assessed to estimate these leaf properties. Some VIs were able to estimate CHL and N (R2 > 0.68), but failed to estimate the other four leaf properties. Models developed with PLSR and SVR exhib...Continue Reading

References

Dec 20, 2005·The Plant Journal : for Cell and Molecular Biology·Sherry A Flint-GarciaEdward S Buckler
Sep 23, 2006·Journal of Experimental Botany·George Alan Blackburn
Nov 15, 2011·Trends in Plant Science·Robert T Furbank, Mark Tester
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Aug 22, 2017·Frontiers in Plant Science·Piyush PandeyJames C Schnable
Jan 9, 2018·Journal of Experimental Botany·Viridiana Silva-PerezJohn R Evans

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Citations

Sep 23, 2020·PloS One·Sharifa G CrandallDenis S Willett
Feb 16, 2021·Frontiers in Plant Science·Angelica GalieniMichele Pisante
Mar 12, 2021·Frontiers in Plant Science·Stien MertensNathalie Wuyts
Apr 30, 2021·The Plant Journal : for Cell and Molecular Biology·Janlo M RobilPaula McSteen
Aug 8, 2021·International Journal of Molecular Sciences·Minsu KimKyung-Hwan Kim
Aug 22, 2021·Trends in Plant Science·Dawei SunHaiyan Cen

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Methods Mentioned

BETA
inductively coupled plasma spectrometry
imaging techniques
environmental stresses

Software Mentioned

e1071
prospectr
R
PLSR

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