Table 1.
Collecting information of materials and cytogenetics data of studied Sorbus taxa.
| Subgenera | Taxon | 2n | L/S | THL (µm) | VCL (µm) | MAR | XCI (%) | CVCI | CVCL | Haploid karyotype formula | Stebbins’ classification | 2C (pg, mean ± s.d.) | 1Cx (pg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subgenus Albocarmesinae | S. filipes | 68 | 2.49 | 26.63 | 0.98–2.12 | 1.63 | 38.68 | 12.98 | 21.11 | 10m (1sat) + 7sm | 2B | 2.684 ± 0.042 | 0.671 |
| S. hupehensis var. paucijuga | 34 | 2.13 | 31.50 | 1.15–2.41 | 1.68 | 37.61 | 9.75 | 14.03 | 10m (1sat) + 7sm | 2B | 1.407 ± 0.007 | 0.704 | |
| S. koehneana | 34 | 2.27 | 22.18 | 0.89–1.79 | 1.33 | 43.36 | 9.47 | 19.20 | 15m + 2sm | 1B | 1.571 ± 0.029 | 0.785 | |
| S. ovalis | 68 | 2.29 | 31.84 | 1.19–2.52 | 1.19 | 45.85 | 4.86 | 18.12 | 17m | 1B | 2.674 ± 0.015 | 0.669 | |
| Subgenus Sorbus | S. amabilis | 34 | 2.49 | 37.38 | 1.54–3.73 | 1.71 | 38.87 | 21.54 | 24.70 | 9m +7sm (1sat) +1st | 2B | 1.401 ± 0.026 | 0.700 |
| S. pohuashanensis | 34 | 2.08 | 50.06 | 2.05–4.08 | 1.46 | 41.35 | 13.23 | 16.66 | 13m (1sat) + 4sm | 2B | 1.664 ± 0.052 | 0.832 | |
| S. scalaris | 34 | 2.10 | 29.03 | 1.14–2.39 | 1.58 | 39.47 | 14.44 | 19.39 | 13m (1sat) + 4sm | 2B | 1.676 ± 0.044 | 0.838 | |
| S. wilsoniana | 34 | 1.95 | 20.68 | 0.89–1.72 | 1.25 | 44.84 | 9.57 | 18.37 | 16m + 1sm | 2A | 1.556 ± 0.089 | 0.778 |
L/S: Ratio of the longest/shortest chromosomes; THL: Total haploid (monoploid) length of chromosome set; VCL: Variation in chromosome length; MAR: Mean arm ratio; XCI: Mean centromeric index; CVCI: Coefficient of Variation of Centromeric Index; CVCL: Coefficient of Variation of Chromosome Length; m: metacentric chromosome; sm: submetacentric chromosome; st: subtelocentric chromosome; sat: satellite chromosomes; s.d.: standard deviation.