TABLE 2

Putative QTL positions, effect magnitudes, and modes of action for 18 traits using composite interval mapping in an F3 population of cultivated (cmsHA89) × wild (H. annuus var. annuus) sunflower

TraitLinkage groupPositiona1-LOD intervalbPVEcMode of actiondDegree of dominancee
Days to FlowerLG0117.210.8–21.53.0A−0.05
LG0461.353.9–64.46.5U−15.63
LG0652.248.2–54.628.0A−0.08
LG072.00.0–21.79.5r−0.34
LG0852.749.3–59.05.5A−0.12
LG0879.377.0–81.36.4d0.34
LG0911.30.0–18.85.6A−0.08
LG0953.549.5–54.33.3A0.14
LG1739.235.6–42.619.9d0.38
LG1758.950.9–64.921.8d0.52
Stem diameterLG0114.84.8–39.57.8A−0.06
LG0331.920.7–39.913.4r−0.27
LG0652.246.4–60.64.4d0.45
LG0700.0–5.53.9R−0.90
LG1141.535.1–47.04.5O3.27
LG1764.954.9–67.87.6d1.51
HeightLG0319.313.3–26.711.3d0.28
LG0658.652.6–64.622.5r−0.25
LG0715.67.6–21.715.6U−11.0
LG1050.746.7–62.25.3r−0.55
LG1335.529.6–36.85.1A0.11
LG1737.633.6–42.69.2A0.19
No. of main stem leavesLG0110.83.3–19.24.6d0.31
LG0650.248.2–52.228.1A0.09
LG074.00.0–7.513.3r−0.29
LG0953.549.5–54.35.2d0.27
LG1739.235.6–42.69.8d0.26
Leaf shapeLG1257.445.6–67.310.2D1.05
LG134.00.0–10.021.0A0.15
Leaf sizeLG0367.255.3–77.211.9O2.23
LG0434.629.1–38.65.0r−0.28
LG0510.00.0–20.68.3R−1.15
LG0951.543.5–54.37.9O16.3
Peduncle lengthLG1050.744.7–60.27.0r−0.65
LG1739.235.6–41.24.7d0.62
LG1748.944.6–65.85.7D0.85
No. of branchesLG0636.426.4–46.411.3A0.12
LG075.50.0–7.58.8U− 1.41
LG1327.619.6–35.57.0r−0.63
No. of headsLG0717.67.5–21.79.4R−1.23
LG0953.549.5–54.310.4O1.45
LG1255.437.6–63.48.0U−1.35
LG1325.619.6–33.511.4r−0.74
LG1744.639.2–62.98.6U−2.36
No. of heads/branchLG0654.646.4–64.66.5r−0.28
LG0953.543.5–54.34.9D1.00
LG1253.435.6–61.47.3r− 0.48
LG1660.138.6–68.97.6r−0.53
LG1746.642.6–58.98.4R− 0.85
Disc diameterLG0451.945.3–57.94.6O9.42
LG0512.00.0–21.55.7r−0.70
LG1300.0–8.06.0d0.58
No. of ray flowersLG0135.525.5–41.57.8A0.04
LG0648.240.4–64.67.2d0.46
LG074.00.0–9.610.1r−0.69
LG0953.543.5–54.35.9d0.55
LG1300.0–8.06.9A0.25
Ray sizeLG0545.337.7–52.39.0U−1.29
LG0628.48.3–40.47.7A−0.16
LG0951.543.5–54.38.7D1.10
No. of selfed seedsLG1742.641.2–46.642.7r−0.29
LG1758.954.9–62.968.0r−0.55
Achene weightLG024.80.0–18.05.9A0.06
LG0365.251.3–75.215.0D5.32
LG0652.648.2–64.65.6r−0.67
LG0953.547.5–54.313.7d0.45
LG1039.328.8–44.712.4D0.87
LG122.00.0–14.05.7D0.97
LG1742.639.2–46.95.4A0.10
Achene widthLG0349.343.3–65.210.2D2.07
LG0652.652.2–64.67.4R−0.81
LG0859.150.7–75.09.2A0.03
LG0951.545.5–54.317.8D1.13
LG1300.0–6.011.0d0.66
Achene lengthLG0545.337.3–52.316.9r−0.72
LG1041.337.3–48.710.7D1.05
ShatteringLG1131.023.0–45.76.6d0.76
LG1741.229.4–44.65.0d0.44
  • a Absolute position from left telomere in centimorgans.

  • b Refers to the region flanking each QTL peak in which LOD scores decline by one.

  • c Percentage of phenotypic variation explained by each QTL using CIM. Note that PVE values are not additive across multiple QTL in CIM and, as such, they may sum to >100%. PVE values for QTL with effects in the direction of the cultivated phenotype (see Table 1) are underlined.

  • d Refers to mode of action of the cmsHA89 allele. U, underdominant; R, recessive; r, partially recessive; A, additive; d, partially dominant; D, dominant; and O, overdominant.

  • e Refers to the degree of dominance (d/a) of the cmsHA89 allele.