TABLE 4

Summary statistics for 13 inflorescence development and morphology traits for two populations of RI lines used for QTL analyses

TraitEmbedded Image [VG]a[VE]b[H2]c[CVG]d
Ler × Col RI population
Bolting time (days)25.30 (1.72)2.703****2.8420.4876.50
Length of reproductive phase of main axis (days)16.73 (0.95)0.653****2.9930.1794.83
Time to maturity of main axis (days)42.03 (1.54)2.070****4.3810.3213.42
Rosette leaves at bolting11.04 (1.33)1.629****2.4890.39611.56
Rosette diameter (cm)1.65 (0.19)0.014****0.2760.0497.26
Plant height (cm)10.94 (3.69)12.882****11.7950.52232.80
Main inflorescence fruits18.45 (2.15)1.648***39.9520.0406.96
Axillary fruits3.22 (2.67)2.431**68.8590.03448.37
Nonelongated 2° meristems0.76 (0.58)0.257****0.8860.22566.59
Elongated axils0.99 (0.45)0.125****0.9570.11635.63
2° inflorescence meristems on main axis1.75 (0.46)0.147****1.0570.12221.81
Early flowers8.71 (2.02)3.392****9.9290.25521.16
Total fruits24.08 (4.36)7.232****154.8270.04511.17
Cvi × Ler RI population
Bolting time (days)22.54 (4.31)17.434****6.0030.74418.52
Length of reproductive phase of main axis (days)18.43 (2.61)6.254****8.0470.43713.57
Time to maturity of main axis (days)41.08 (5.20)25.311****11.0070.69712.25
Rosette leaves at bolting8.26 (1.55)2.194****1.9130.53417.93
Rosette diameter (cm)1.71 (0.25)0.041****0.2750.12911.83
Plant height (cm)10.18 (3.70)12.995****10.4400.55535.40
Main inflorescence fruits13.62 (3.33)9.438****24.2080.28122.55
Axillary fruits2.53 (3.04)6.508****40.2120.139100.69
Nonelongated 2° meristems2.06 (0.66)0.372****0.8890.29529.57
Elongated axils0.38 (0.35)0.090****0.5570.13979.28
2° inflorescence meristems on main axis2.44 (0.55)0.252****0.6890.26820.58
Early flowers4.91 (1.32)1.560****3.1160.33425.42
Total fruits16.15 (6.00)29.592****94.9060.23833.68
  • a Among-line variance component from ANOVA; tests whether genetic differences exist among RI lines for specified traits: **P ≤ 0.01; ***P ≤ 0.001; ****P ≤ 0.0001.

  • b Residual variance component from ANOVA.

  • c Measure of total phenotypic variance attributable to genetic differences among lines (broad sense heritability) calculated as VG/(VG + VE).

  • d Coefficient of genetic variation calculated as Embedded Image .