Figure 6

Phylogenetic relationships and hypothetical evolutionary progress of the clustering of BnLEA genes in B. napus chromosome C5.
(A) Phylogenetic relationships of selected BnLEA genes in the cluster. (B) Hypothetical mechanism of BnLEA gene cluster formation. The letters T, S and W in the schematic diagram of the hypothetical origins of BnLEA genes indicate putative tandem duplication, segmental duplication and whole-genome duplication, respectively.