Fig. 6From: Genome-wide investigation and expression analyses of the pentatricopeptide repeat protein gene family in foxtail milletDiagram showing approximate times of duplication and divergence of the plants in this study. (a) Evolutionary relationships and approximate times of divergence of the six species in land plants [1, 75]. (b) The time of duplication and divergence of PPR genes in foxtail millet and the orthologous gene-pairs of SiPPR genes with those of other species: moss, Selaginella, Arabidopsis, rice and maize. Tandem duplication time (TDT) and segmental duplication time (SDT) of SiPPR genes were estimated to have occurred around 2123.51 Mya and 447.23 Mya, respectivelyBack to article page