| Accuracy | Optimal Number of PCs | Leave-One-Out Cross-Validation | Repeated Holdout | (Standard Deviation) | ||
| (a) Wild vs Cultivated | 15 | 98% | 96% | (2%) | ||
| (b) Wild | Top vs Mid | 5 | 98% | 98% | (1%) | |
| Bottom vs Mid | 7 | 99% | 96% | (2%) | ||
| (c) Cultivated | Top vs Mid | 5 | 100% | 98% | (1%) | |
| Bottom vs Mid | 7 | 87% | 83% | (4%) | ||