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Table 1 Calibration statistics for equations generated for prediction of wall polymers in transgenetic rice straws

From: A precise and consistent assay for major wall polymer features that distinctively determine biomass saccharification in transgenic rice by near-infrared spectroscopy

 

Calibration

Cross validation

N

Terms

DT

SCM

Spectrum range (nm)

Mean

SD

SEC

R 2

SECV

R 2 cv

RPD

Cellulose

140

3

2,4,4,2

SNVD

408–2492

25.11

4.45

1.55

0.88

1.59

0.87

2.79

Hemicellulose

 Ara (%)

145

5

1,4,4,1

SNV

408–2492

13.22

1.37

0.75

0.70

0.79

0.66

1.73

 Xyl (%)

139

9

1,4,4,1

SNV

1108–2492

75.08

2.63

1.07

0.84

1.20

0.79

2.18

 X/A

142

5

1,4,4,1

SNV

408–2492

5.75

0.77

0.37

0.77

0.39

0.75

1.98

Lignin

 ASL

141

9

1,4,4,1

MSC

1108–2492

3.13

0.41

0.12

0.91

0.15

0.87

2.78

 AIL

140

5

1,4,4,1

SNV

408–2492

8.20

1.40

0.71

0.74

0.76

0.70

1.82

 Total

140

9

0,0,1,1

WMSC

408–2492

11.33

1.55

0.69

0.80

0.75

0.77

2.07

  1. N sample number, Terms number of principal component used for calibration, DT derivative treatment, SCM scatter correction methods, SD standard deviation of reference value, SEC standard error of calibration, R 2 determination coefficient, SECV standard error of cross validation, R 2 cv, determination coefficient of cross validation, RPD ratio performance deviation (SD/SECV), SNVD a combination of standard normal variate and detrend, SNV standard normal variate, MSC standard multiple scatter, WMSC weighted multiple scatter correction, Ara arabinose, Xyl xylose, X/A xylose/arabinose, ASL acid soluble lignin, AIL acid insoluble lignin