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Phylogenetic tree of KNOX gene cDNA sequences. STM-like genes from dicotyls are highlighted in bold, and SlSTM1 and SlSTM2 are indicated with arrowheads. AaKnox1, Pp MKN1 and PpMKN2, and CrCRKNOX3 were included as outgroups. The numbers beside the branches represent bootstrap values based on 500 replicates.
