Figure 5.

Phylogenetic analysis. Unrooted neighbor joining consensus tree of 187 lines based on 100 shared allele bootstrap trees constructed using 43 SSR markers. Bootstrap values greater than 20 are presented for major branches. For clarity, where several lines formed a tight cluster only the number of lines and color-coded line prefixes are displayed. Note that the lines fall into two main groups supported by very high bootstrap support. The lines in the red circle share a number of phenotypic characters (small seeds, hairless lemmas, long vernalization requirements). The other group contains all the other lines from Turkey and Iraq. The major branches in this group have little bootstrap support. Smaller branches with good bootstrap support group the BdTR lines. Additional file 8 shows the same tree as a rectangular phylogram in which all line labels can be read.