Figure 3. Scatterplot of the main intragenomic ITS2 variant of all species each.

The frequency of the main variant is plotted versus the mean number of CBCs as compared to all remaining variants of the species. All 167 species are investigated. According to figure 2, exemplarily different species of the genus Citrus are highlighted right to the respective data point. For example the main variant of Citrus medica occurs with a frequency of ∼84%. Three remaining variants (cf. Fig. 2) together occur in 16% and show 0.2 CBCs on average as compared to the main type. Most data points are close to zero and show no CBCs between different variants. Additionally, densities of the main variant frequencies and CBC means are given above and right to the respective margins. Mainly, there are one or two main variants per species.