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. 2021 Jul 14;12:664385. doi: 10.3389/fmicb.2021.664385

FIGURE 5.

FIGURE 5

Principal component analysis (PCA) on all plant traits and pathogen effect sizes for 80 alfalfa varieties single or co-inoculated with Fom and Rs. (A) PCA of all plant traits under the control and three pathogen treatments. PCA on pathogen effect sizes of plant traits under (B) single inoculation with Fom (Fom), (C) single inoculation with Rs (Rs), and (D) co-inoculation with Fom and Rs (Fom:Rs). Biplot vectors are trait factor loadings, whereas the position of each variety is shown. Kaiser–Meyer–Olkin (KMO) measure of sampling adequacy and Bartlett’s test of sphericity are shown. The study includes 75 M. sativa subsp. sativa (Ms) varieties consisting of 24 domestic bred (BV, circles in black), 4 local varieties (LV, triangles) in China, and 47 introduced varieties overseas (IV, circles in gray), and 5 M. sativa subsp. varia domestic bred varieties (Mv, squares). Numbers of varieties shown in panels (B–D) corresponds to those shown in Supplementary Table 1.