TABLE 6

QTL for 13 inflorescence development and morphology traits mapped in Ler × Col RI lines

TraitChromosomeQTL map position, cM (nearest marker)2-LOD support limit, cM range (flanking markers)aAdditive effectb[r2]c
Bolting time10.01 (ve001)0–8.60 (ve001–SNP308)−0.530.083
217.65 (g4133)11.12–29.39 (DF.225L–mi148)0.580.085
242.71 (er)37.02–52.32 (mi238–ve096)−0.610.109
520.15 (ve033)16.80–23.36 (KG31–mi174)0.990.162
5126.01 (SNP153)121.44–133.20 (ve032–BI0205)0.740.187
Length of reproductive phase of main axis10.01 (ve001)0–3.06 (ve001–T1G11a)0.380.067
112.83 (mi443)10.20–15.16 (SNP308–BH.147L)− 0.430.085
124.12 (EG17G9)10.20–25.54 (SNP308–mi113)−0.340.079
1113.19 (mi185)92.60–113.66 (mi259–mi103)0.220.045
239.69 (GPA1)39.62–44.21 (GPA1–mi54)0.400.088
528.34 (mi322)25.47–30.64 (mi174–g4560)− 0.490.203
Time to maturity of main axis124.82 (EG17G9)20.66–25.54 (ve007–mi113)−0.640.073
262.57 (g4514)47.81–70.77 (mi54–mi79a)−0.480.079
5124.03 (g2368)120.14–133.06 (ve032–BI0205)0.720.195
Rosette leaves at bolting10.01 (ve001)0–2.81 (ve001–T1G11a)−0.600.178
1108.69 (mt185)103.01–113.09 (m315–Tag1)0.490.103
372.37 (AtPK41A)61.98–83.51 (g4117–g2778)0.340.058
43.28 (mi122)0.11–11.26 (mi51–app)−0.490.120
521.66 (CDs5)18.20–26.61 (KG31–cor6.6)0.870.356
Rosette diameter241.81 (er)41.79–44.71 (er–mi54)0.120.309
268.71 (Ubique)66.09–71.17 (m336–mi79a)−0.070.076
50.01 (pAtT80)0–4.89 (pAtT80–g3715)0.060.085
Plant height241.79 (er)39.99–44.51 (GPA1–mi54)3.690.684
268.69 (Ubique)62.17–79.29 (g4514–RRS2)−0.600.021
472.34 (CDs11)61.85–81.07 (mi422–m214)−0.660.027
Main inflorescence fruits241.79 (er)39.79–45.41 (GPA1–mi54)−1.120.250
Axillary fruits10.51 (ve001)0–10.20 (ve001–SNP308)0.950.114
241.79 (er)33.02–47.21 (mi238–mi54)−1.030.125
526.51 (cor6.6)17.30–31.02 (KG31–TSL)−1.290.088
Nonelongated 2° meristems1117.88 (CD.173L)108.29–128.01 (mi185–agp64)0.140.055
229.32 (mi139)20.23–29.39 (PR1–mi148)0.210.079
241.49 (er)39.69–44.51 (mi238–mi54)−0.330.209
521.16 (CDs5)17.90–23.66 (KG31–mi174)0.280.215
5126.01 (SNP153)122.63–128.11 (g2368–CATHANK)0.310.147
Elongated axils175.41 (mi72)69.66–78.22 (mi133–mi291a)0.160.120
241.79 (er)31.39–47.71 (mi148–mi54)0.160.109
5126.31 (SNP153)118.35–133.20 (ATR3–BI0205)−0.160.119
2° inflorescence meristems on main axis1113.26 (Tag1)107.79–124.28 (mi185–mi425)0.130.070
520.55 (CDs5)17.10–23.46 (KG31–mi174)0.250.235
Early flowers136.37 (DF.73L)23.32–39.80 (BH.147L–mi265)0.450.045
241.79 (er)39.99–44.71 (GPA1–mi54)−1.670.420
42.76 (mi204)2.71–5.68 (mi204–g3843)−0.480.043
414.47 (app)9.76–17.97 (mi390–Gsl_ohp)−0.780.078
570.63 (m247)61.40–76.97 (mi137–mCH1)0.430.043
5100.9 (h2a1)87.79–125.23 (ve027–SNP153)−0.430.039
Total fruits120.96 (ve007)14.66–30.75 (ATTS0477–g3829)1.590.136
587.89 (ve027)82.60–98.25 (mi83–m435)−2.010.144
  • a Markers nearest (but outside of) the 2-LOD support limits.

  • b The additive effect (a) of a QTL is defined as (Q1Q1Q2Q2)/2, where Q1Q1and Q2Q2 represent the mean phenotypes of RI lines homozygous for alternative genotypes at a QTL position. The sign of the additive effect corresponds to the direction of effect of the Columbia allele on the phenotype.

  • c Proportion of variance explained by the QTL after accounting for background markers.