Fig. 3

Circos diagram showing the homoeologous relationships between genes present within the main regions for yield-related traits. The 19 B. napus chromosomes (2n = 4x = 38; AACC) belonging to the A and C sub-genomes are represented in blue and red, respectively. The physical size of each chromosome (in Mbp) is indicated above the chromosome, and a ruler is drawn below, with larger and smaller tick marks every 10 and 2 Mbp, respectively. The forty-two QTL seed yield-related traits detected using model (1) (\( {\boldsymbol{P}}_{\boldsymbol{i}\boldsymbol{jklm}} = \boldsymbol{\mu} +\underline {{\boldsymbol{G}}_{\boldsymbol{i}}} + {\boldsymbol{N}}_{\boldsymbol{j}} + \underline {{\boldsymbol{T}}_{\boldsymbol{l}}}+\underline {{\boldsymbol{T}}_{\boldsymbol{l}}\left({\boldsymbol{R}}_{\boldsymbol{k}}\right)} + \underline {{\boldsymbol{G}}_{\boldsymbol{i}}\times {\boldsymbol{N}}_{\boldsymbol{j}}}+\underline {{\boldsymbol{G}}_{\boldsymbol{i}} \times {\boldsymbol{T}}_{\boldsymbol{l}}} + \underline {{\boldsymbol{G}}_{\boldsymbol{i}}\times {\boldsymbol{N}}_{\boldsymbol{j}}\times {\boldsymbol{T}}_{\boldsymbol{l}}} + \underline {{\boldsymbol{e}}_{\boldsymbol{i}\boldsymbol{jklm}}}\Big) \) are represented by bars on three runways, depending on the population in which the QTL was detected (WOSR-69, AM-DH or DK-DH) according to the following color code: flowering time (DTF) in pink; seed yield (SY) in green; seed number/m² (SN) in blue; and thousand-seed weight (TSW) in orange. Each pair of homoeologous genes is represented by a line colored according to the following code: in gray, the homoeologous genes between QTL and regions carrying no other QTL; in blue, the homoeologous genes between QTL detected using model (1). The numbers of homoeologous genes present in each pair of homoeologous regions are indicated in the boxes