Fig. 1From: Genome-wide analysis of poplar NF-YB gene family and identified PtNF-YB1 important in regulate flowering timing in transgenic plantsAnalysis of the deduced amino acid sequence of PtNF-YB1. a Phylogenetic tree of poplar, Arabidopsis and rice. The phylogenetic trees were constructed by the Neighbor-Joining (NJ) method using conserved and amino acid sequences (MEGA V5.5). b Multiple sequences alignment of the conversed domains between PtNF-YB1 and AtNF-YB2Back to article page