TABLE 2

QTL for photoperiod sensitivity in Ler × Col RI lines

TraitQTL map position: chromosome-cM (2 LOD support limit)Additive effectaOverlap with QTL for traitb
Length of reproductive phase of main axis (days)III-70.58 (58.59–76.39)–0.172N
Time to maturity of main axis (days)I-45.22 (42.18–56.15)–0.067N
IV-28.74 (22.91–38.32)0.061 Y
V-130.22 (113.78–135.32)0.056 Y
Rosette leaves at boltingII-81.05 (74.05–81.05)0.109Y
IV-14.71 (0.01–45.94)0.103Y
V-76.99 (73.15–79.37)–0.107N
Rosette diameter (cm)I-45.22 (45.18–53.78)–0.577N
IV-63.91 (54.59–69.27)0.493M
Plant height (cm)II-44.62 (41.54–48.17)0.273 Y
Main inflorescence fruitsIV-3.32 (0.01–6.08)–0.122N
IV-42.68 (42.00–45.44)–0.149N
IV-56.48 (53.64–67.70)0.116Y
Nonelongated secondary meristemsI-31.12 (22.22–41.12)–0.075 Y
IV-25.62 (19.20–38.32)0.089M
Early flowersI-32.16 (13.02–35.64)0.089 Y
II-43.17 (41.04–46.67)–0.182 Y
IV-9.87 (0.01–21.85)–0.078N
V-126.71 (112.32–131.22)–0.100N
Total fruitsIV-0.01 (0.01–13.21)–0.114N
  • a The additive effect is defined as (Q1Q1Q2Q2)/2, where Q1Q1 and Q2Q2 represent the mean environmental sensitivity 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.

  • b Whether sensitivity QTL overlap in position with QTL detected by multiple-trait CIM: Y, yes; N, no; M, QTL detected by multiple-trait CIM is marginally significant (P < 0.10). Underlining indicates that QTL exhibit QTL × environment interaction.