Fig 1.
Principal component analysis (PCA) obtained from 5,061 polymorphic SNPs, indicating the population structure in 317 common bean PI accessions.
PCA1, PCA2 and PCA3 explained 34%, 9.1%, and 3.1% of the variation, respectively. The red colored pixels represent accessions collected from Central-South America and green colored pixels represent accessions collected from Mexico, however, accessions grouped together based on genepools present in the core collection.
Fig 2.
Distribution of the soybean cyst nematode female index (FI).
a. Middle American subpopulation of common bean consisting 179 PI accessions and b. Andean subpopulation consisting of 138 PI accessions. Resistant (FI < 10; blue), moderately resistant (FI 10 to 30; purple), moderately susceptible (FI 31 to 60; red), susceptible (FI > 60; green).
Fig 3.
Genome wide association mapping analysis of disease reaction to soybean cyst nematode HG type 0.
(a) Middle American and (b) Andean subpopulations of the common bean core collection. Phaseolus vulgaris chromosomes are listed on the x-axis. A -log10(p) scale of significance is represented on the y-axis with the red horizontal line representing the significance threshold of -log10(p) = 3. The colored pixels represent individual SNP markers.
Table 1.
Bayesian information criterion (BIC) for tested association models in the genome association analysis.
The model with lowest BIC value was selected.
Table 2.
Significant markers associated with a resistant reaction to SCN HG type 0 in the Middle American subpopulation of the common bean core collection.
Table 3.
Significant markers associated with a resistant reaction to SCN HG type 0 in the Andean subpopulation of the common bean core collection.
Fig 4.
Sequence analysis of α-SNAP proteins.
(a) Conserved residues analysis reveals that α-SNAP proteins constitute a family of proteins with a common modular architecture containing four tetratricopeptide repeat (TPR) motifs, (b) Comparative sequence analysis of α-SNAP proteins from Phaseolus vulgaris and α-SNAP protein from Glycine max. (c) The alignment shows a high similarity among all four SNAPs.