Fig. 2
From: Genome-wide association mapping of date palm fruit traits
GWAS analysis of the sex determination region of date palm. a PCA of genetic structure in the GWAS panel. Points are colored based on whether the ancestry of the variety traces to Middle Eastern (blue) or North African (orange) date populations. The shapes of the points indicate the location of the tree in Al-Shuwaib (triangle) or Ras Al-Khaimah (dot), b decay of linkage disequilibrium with physical distance in the GWAS mapping population. The half decay distance is 22.9 kb, c GWAS of sex determination in date palm (n = 157 date palms). Top: Manhattan plot using the randomly downsampled SNP set (392,948 SNPs) for all linkage groups and unplaced scaffolds, below: Manhattan plot using the full SNP set on LG 12. Corresponding quantile-quantile plot can be found in Supplementary Fig. 4. Source data are provided as a Source Data file
