Figure 2

The features of the COL genes in B. rapa.
(a) The distribution of BraCOL genes on ten chromosomes. The 8 ancestral blocks and three subgenomes, including the least fractionated (LF), medium fractionated (MF1) and most fractionated (MF2) subgenomes, were plotted as described by Cheng et al. (2013). AK represents the ancestral karyotype. The orange lines connect the duplicated BraCOL genes. (b) The following three maps were constructed based on the orthologous and paralogous pair positions: Chinese cabbage (A01–A10) and Arabidopsis chromosome (Chr1–Chr5) maps (left), Chinese cabbage (A01–A10) and rice chromosome (Chr1–Chr12) maps (middle) and Arabidopsis (Chr1–Chr5) and rice chromosome (Chr1–Chr12) maps (right). The red lines represent the orthologous pairs between Chinese cabbage and Arabidopsis, the purple lines represent the orthologous pairs between Chinese cabbage and rice and the light blue lines represent the orthologous pairs between Arabidopsis and rice. The blue, green and orange lines represent the paralogous pairs in Chinese cabbage, Arabidopsis and rice, respectively.