Table 2 . Distribution of 2072 SSR and SNP marker loci among the 26 allotetraploid cotton chromosomes.
| Chromosome | No. Marker Loci | Recombinational Size, cM | Average Marker Interval, cM | No. Gaps >10 cM (Largest) |
|---|---|---|---|---|
| A-subgenome | ||||
| Chr.01(A01) | 66 | 144.4 | 2.19 | 2 (14.46) |
| Chr.02(A02) | 60 | 118.4 | 1.97 | 1 (13.46) |
| Chr.03(A03) | 87 | 116.4 | 1.34 | 2 (13.09) |
| Chr.04(A04) | 56 | 101.6 | 1.81 | 2 (15.88) |
| Chr.05(A05) | 139 | 199.2 | 1.43 | 1 (10.03) |
| Chr.06(A06) | 89 | 131.0 | 1.47 | 0 (8.35) |
| Chr.07(A07) | 87 | 128.9 | 1.48 | 1 (10.23) |
| Chr.08(A08) | 92 | 140.0 | 1.52 | 2 (16.52) |
| Chr.09(A09) | 99 | 139.4 | 1.41 | 0 (9.00) |
| Chr.10(A10) | 75 | 109.0 | 1.45 | 0 (6.55) |
| Chr.11(A11) | 140 | 166.5 | 1.19 | 0 (9.98) |
| Chr.12(A12) | 84 | 122.8 | 1.46 | 0 (8.79) |
| Chr.13(A13) | 64 | 109.3 | 1.71 | 0 (7.17) |
| Subtotal-At | 1138 | 1726.8 | 1.52 | 11 (16.52) |
| D-subgenome | ||||
| Chr.15(D01) | 93 | 118.0 | 1.27 | 1 (10.05) |
| Chr.17(D02) | 42 | 114.6 | 2.73 | 2 (22.01) |
| Chr.14(D03) | 79 | 126.4 | 1.60 | 1 (15.92) |
| Chr.22(D04) | 45 | 77.9 | 1.73 | 1 (14.09) |
| Chr.19(D05) | 132 | 227.2 | 1.72 | 1 (15.78) |
| Chr.25(D06) | 70 | 126.9 | 1.81 | 0 (9.249) |
| Chr.16(D07) | 58 | 124.4 | 2.15 | 2 (17.02) |
| Chr.24(D08) | 62 | 118.8 | 1.92 | 1 (10.47) |
| Chr.23(D09) | 83 | 146.0 | 1.76 | 1 (11.07) |
| Chr.20(D10) | 76 | 119.0 | 1.57 | 0 (5.03) |
| Chr.21(D11) | 80 | 136.8 | 1.71 | 0 (9.27) |
| Chr.26(D12) | 53 | 112.3 | 2.12 | 0 (9.23) |
| Chr.18(D13) | 61 | 104.8 | 1.72 | 0 (7.23) |
| Subtotal-Dt | 934 | 1653.1 | 1.77 | 10 (22.01) |
| Total | 2072 | 3380 | 1.63 | 21 (22.01) |
SNP, single nucleotide polymorphism; SSR, simple sequence repeat.