Table 2.
QTLs for drought tolerance identified in a recombinant inbred line population derived from a drought-tolerant ‘PI416937’ and susceptible ‘Cheonsang’ parents.
| QTL Name 1 | Traits 2 | Chr(LG) 3 | Genetic Position (cM) |
Year | Marker Interval | Physical Position of Markers 4 (bp) | LOD 5 | PVE 6 (%) | Add 7 |
|---|---|---|---|---|---|---|---|---|---|
| qWDC1-1 | 3 | 1(D1a) | 59.0 | Mean (2018–2019) | AX-90430153–AX-90472468 | 4,523,676–5,311,697 | 3.59 | 9.0 | 0.0299 |
| qWDC1-2 | 3 | 1(D1a) | 77.5 | Mean (2018–2019) | AX-90491463–AX-90348846 | 8,574,531–12,537,020 | 3.88 | 9.5 | 0.0303 |
| qWDC2-1 | 3 | 2(D1b) | 116.3 | 2017 | AX-90446012–AX-90363541 | 14,349,986–14,561,578 | 4.53 | 10.3 | 0.0998 |
| qWDC2-1 | 2 | 2(D1b) | 116.3 | 2017 | AX-90446012–AX-90363541 | 14,349,986–14,561,578 | 4.68 | 10.6 | 0.1276 |
| qWDC7-1 | 2 | 7(M) | 73.1 | Mean (2017–2018) | AX-90361948–AX-90313028 | 8,428,091–8,490,557 | 3.51 | 8.2 | −0.0539 |
| qWDC7-1 | 2 | 7(M) | 78.3 | 2017 | AX-90524222–AX-90514687 | 8,678,861–9,630,217 | 3.90 | 8.7 | −0.1102 |
| qWDC7-1 | 6 | 7(M) | 78.9 | 2017 | AX-90395090–AX-90450726 | 9,458,480–10,232,736 | 3.58 | 8.5 | −0.1403 |
| qWDC7-1 | 6 | 7(M) | 78.9 | Mean (2017–2018) | AX-90395090–AX-90450726 | 9,458,480–10,232,736 | 3.57 | 8.7 | −0.0711 |
| qWDC7-1 | 3 | 7(M) | 78.9 | 2017 | AX-90395090–AX-90450726 | 9,458,480–10,232,736 | 4.44 | 10.0 | −0.0935 |
| qWDC7-1 | 3 | 7(M) | 78.9 | Mean (2017–2018) | AX-90395090–AX-90450726 | 9,458,480–10,232,736 | 4.42 | 10.3 | −0.0489 |
| qWDC10-1 | 3 | 10(O) | 48.5 | 2017 | AX-90408464–AX-90377420 | 38,465,737–38,164,877 | 4.14 | 9.2 | −0.0910 |
| qWDC10-1 | 2 | 10(O) | 48.5 | 2017 | AX-90408464–AX-90377420 | 38,465,737–38,164,877 | 4.47 | 9.9 | −0.1189 |
| qWDC14-1 | 6 | 14(B2) | 0.4 | 2018 | AX-90403945–AX-90517018 | 241,228–369,721 | 3.65 | 9.6 | −0.0405 |
| qWDC19-1 | 6 | 19(L) | 101.5 | Mean (2017–2019) | AX-90425812–AX-90334270 | 41,077,065–41,940,539 | 3.54 | 8.4 | 0.0467 |
| qWDC19-1 | 2 | 19(L) | 101.5 | Mean (2017–2019) | AX-90425812–AX-90334270 | 41,077,065–41,940,539 | 3.52 | 8.1 | 0.0397 |
| qWDC19-1 | 6 | 19(L) | 104.2 | 2017 | AX-90334270–AX-90311493 | 41,940,539–42,045,317 | 4.03 | 9.6 | 0.1491 |
| qWDC19-2 | 3 | 19(L) | 111.5 | 2017 | AX-90480787–AX-90489545 | 43,473,467–43,030,013 | 4.45 | 10.0 | 0.0938 |
| qWDC19-2 | 2 | 19(L) | 111.5 | 2017 | AX-90480787–AX-90489545 | 43,473,467–43,030,013 | 4.57 | 10.3 | 0.1203 |
| qWDC19-3 | 2 | 19(L) | 156.9 | Mean (2017–2019) | AX-90403789–AX-90364479 | 49,436,986–49,727,405 | 3.91 | 9.1 | −0.0425 |
| qWDC20-1 | 6 | 20(I) | 58.7 | 2019 | AX-90318489–AX-90405719 | 30,153,192–32,595,196 | 4.71 | 12.9 | 0.0601 |
1 QTL detected at the same, adjacent or overlapping marker intervals were considered the same QTL. 2 Number of traits (2: biomass and leaf area, 3: plant height, biomass, and leaf area, and 6: plant height, node number, branch number, pod number, biomass, and leaf area) considered to analyzed the QTL. 3 Chromosome (Chr) and linkage group (LG). 4 Physical position of the marker interval. The soybean reference genome (Glycine max Wm82.a1) was used to determine the physical position of the markers. 5 Logarithm of odds value at the peak likelihood of QTL. 6 Phenotypic variation explained by the QTL. 7 Additive effect, a positive value indicates that ‘PI416937’ contributed the allele, and negative value indicates that ‘Cheonsang’ contributed the allele for the PVE.