Figure 1.

(a) Relationship between longitude and seed count in breadfruit; line represents y = −0.0643x + 4.4128, R² = 0.37, p < 0.001. (b) Relationship between longitude and arbuscular colonization; line represents y = −0.432x + 35.524, R² = 0.773, p < 0.001. (c) Relationship between longitude and vesicular colonization; line represents y = −0.239x + 29.182, R² = 0.399, p < 0.001. (d) Relationship between longitude and hyphal colonization (HC); line represents y = 0.026x + 35.553, R² = 0.007, p = 0.627. (e) Relationship between longitude and AM fungal richness. A linear increase of AM fungal richness is shown for eastward domestication from New Guinea. Line represents y = 0.040x + 6.810, R² = 0.097, p = 0.057. AM fungal richness is assessed as the number of AM fungi sequences detected in each sample. Linear regression was performed including all 56 samples to visualize and complement the statistical results presented in table 1. (a–d) Diamonds, A. camansi; squares, A. mariannensis; triangles, A × M; asterisks, A. altilis. (e) Diamonds, A. camansi; circles, A. mariannensis; triangles, A × M; asterisks, A. altilis.