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. 2026 Apr 15;17:1799303. doi: 10.3389/fpls.2026.1799303

Figure 6.

Scatterplot showing principal component analysis (PCA) with points colored by first inoculum—yellow for 1N3, blue for 2N5, green for 3N1—and shaped by number of inoculated strains: circles (1), triangles (2), squares (3). Three black circles labeled 1N3, 2N5, and 3N1 mark group centroids. Ellipses indicate group distributions. PC1 and PC2 are on the axes, with a legend on the right.

Principal component analysis (PCA) of disease severity dynamics across inoculation treatments. The PCA was performed using S measurements collected at 24, 48, 72, 96, and 120 hours post-inoculation. Each point represents an individual plant, colored by the first inoculated strain and shaped according to the total number of strains applied. Ellipses depict 95% confidence regions for groups defined by the first inoculum, with group centroids shown as filled black points. The PCA was constructed in R using the ggplot2 package.