Figure 1.

ML tree inferred from the concatenated sequences of 142 genes using the GTR+Γ model. The same topology was obtained from MP and BI. The letters A, B, C, E, F, and G represent all recognized diploid genome types of Oryza, and L represents the outgroup. The names of the species that represent the genome types and outgroup are in parentheses. Numbers above branches indicate bootstrap support of ML and MP, and posterior probability of BI, respectively. Four internal branches of Oryza genome types are indicated with I, II, III, and IV. Branch length is proportional to the number of substitutions measured by the scale bar.