Research Article
Prediction Model of the Key Components for Lodging Resistance in Rapeseed Stalk Using Near-Infrared Reflectance Spectroscopy (NIRS)
Table 5
The test result of the model.
| Index | Pretreatment method | Wave number (cm−1) | Principal component number | Calibration set | Validation set | R | RMSECV (%) | R | RMSEP (%) |
| Carbon | No spectral pretreatment | 7501.7–4246.5 | 9 | 0.973 | 0.240 | 0.887 | 0.348 |
| Nitrogen | No spectral pretreatment | 7501.7–5449.8 | 9 | 0.959 | 0.024 | 0.875 | 0.033 | 4601.3–4246.5 |
| Lignin | No spectral pretreatment | 7501.7–6097.8 | 3 | 0.923 | 1.250 | 0.760 | 1.691 | 5453.7–4246.5 |
| Acid-insoluble lignin | No spectral pretreatment | 11998.9–7497.9 | 1 | 0.928 | 1.480 | 0.766 | 2.448 | 5453.7–4246.5 |
| Soluble sugar | No spectral pretreatment | 11998.9–6097.8 | 1 | 0.939 | 0.310 | 0.833 | 0.428 |
| Cellulose | No spectral pretreatment | 7501.7–5449.8 | 6 | 0.945 | 1.880 | 0.863 | 2.600 |
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