| | Characteristics | Number of samples | Samples | Representative zones |
| Cluster 1 | None | 15 | B1, B6, N5, N6, N9, T5, T6, T7, T9, T10, K2, K8, K9, K10, Z6 | ZS: 50% | ZSG: 25% | ZG: 10% |
| Cluster 2 | (i) Darkest | 12 | B2, B5, B9, N3, N4, N7, K1, K3, K4, K5, K6, K7 | ZS: 30% ZSG: 30% | (ii) High pH | (iii) High conductivity | (iv) High flavonoid content |
| Cluster 3 | (i) Low proline content | 16 | B3, B4, B7, B8, B10, N1, N10, T8, Z1, Z2, Z3, Z4, Z5, Z8, Z9, Z10 | ZS: 5% | (ii) Low phenolic content | ZSG: 35% | ZG: 80% |
| Cluster 4 | (i) High sugar content | 2 | N2, N8 | ZSG: 10% | (ii) High proline content | (iii) Low moisture |
| Cluster 5 | (i) Lightest | 5 | T1, T2, T3, T4, Z7 | ZS: 20% | (ii) High phenolic content | ZG: 10% |
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