| Accuracy | Optimal Number of PLS Components | Leave-One-Out Cross-Validation | Repeated Holdout | (Standard Deviation) | |
| (a) Wild vs Cultivated | 4 | 98% | 97% | (2%) | |
| (b) Wild | Top vs Mid | 2 | 98% | 98% | (1%) |
| Bottom vs Mid | 3 | 100% | 97% | (2%) | |
| (c) Cultivated | Top vs Mid | 2 | 100% | 98% | (1%) |
| Bottom vs Mid | 3 | 87% | 84% | (3%) | |