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Table 2 Calibration and test results of estimating leaf physiological and chemical properties of maize plants from VIS–NIR–SWIR hyperspectral reflectance spectra using support vector regression

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

 

Calibration

Test

R2

RMSEC

C

R2

RMSET

MAPET (%)

RPD

Chlorophyll (µmol/m2)

0.950

27.0

1

0.946

28.5

5.59

4.30

Leaf water content (%)

0.765

1.42

1

0.703

1.81

1.58

1.83

Specific leaf area (m2/kg)

0.600

1.52

1

0.562

1.61

6.71

1.50

Nitrogen (%)

0.882

0.240

10

0.861

0.277

8.69

2.67

Phosphorus (%)

0.545

0.077

100

0.481

0.081

16.4

1.38

Potassium (%)

0.740

0.256

100

0.543

0.317

10.2

1.46

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Plant Methods

ISSN: 1746-4811