Genetic Structure of the Invasive Tree Ailanthus altissima in Eastern United States Cities
Figure 3
Ailanthus population structure as estimated by the program structure [28] rendered using the program distruct [29]. Shown are 28 Ailanthus populations (labeled as sampled) and their inferred gene pool composition based on 5 microsatellite loci. Each population section (bounded by vertical black lines) is comprised of thin vertical colored lines representing the roughly 20 individuals sampled per population. The colors ( in number) denote each individual’s estimated fractional membership in the populations or genomes hypothesized. Shown are the two separate hypotheses of and populations. For example, under the hypothesis of biological populations, the sample of 20 stems from Mahan, WV contained mostly the blue genome with a little of the yellow genome. Only 23 km down the road, Sharon, WV contained mostly the red genome with small amounts of the other five genomes. Both Mahan and Sharon had small human population sizes.
