Figure 2From: Molecular characterization of the SPL gene family in Populus trichocarpaNeighbor-joining (NJ) phylogenetic tree for 44 SPLs in P. trichocarpa and Arabidopsis . The groups of homologous genes identified and bootstrap values are shown. The reliability of branching was assessed by the bootstrap re-sampling method using 1,000 bootstrap replicates. Bootstrap values are shown below nodes.Back to article page