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Fig. 4 | BMC Genomics

Fig. 4

From: Association mapping by aerial drone reveals 213 genetic associations for Sorghum bicolor biomass traits under drought

Fig. 4

Manhattan blots (M-blots) for chromosomes 1–10. We designed the Manhattan blot as a new method for viewing the results of a large number of single-variate GWAS, as might be performed to utilize HDP-GWAS data -- the results of 460 single-variate GWAS results in the case of the current study. Each point on an M-blot represents a SNP that was significant in at least one of the 460 GWAS where the x-axis is the physical position of the SNP in Mb (by chromosome), the left y-axis gives median of the –log (FDR corrected p-value) across all GWAS where the SNP was significant, and where the size of the point is proportional to the number of independent GWAS in which the SNP registered as significant (N). These M-blots show the combination of the results for all trait by treatment by time-point by location combinations. The alternating blue and green vertical lines delineate the physical positions of distinct peaks defined using our peak definition pipeline. The right y-axis gives the value of the red star – the highest median percent variance explained (PVE) calculated for the SNPs within the interval of each peak

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