Phylogenetic analysis of plant populations. To evaluate population structure in the weed green foxtail, RAPD marker data from different foxtail accessions were read into an mGDE window (top), and selected. Parsimony analysis was chosen from the Phylogeny menu, and the Phylip DOLLOP program generated a set of equally parsimonious trees, which appear in a tGDE window, and in the text report (middle). All trees were selected, and CONSENSE was run. Output is a single consensus tree, which appears in a new tGDE window, as well as in the ATV tree editor (bottom). The tGDE window has additional menu options for running various other tree display programs.