FIGURE 2.

Fine mapping of the pale-yellow petal gene BrPYP. (A) SNP index plot of 10 chromosomes produced using BSA analysis. The x-axis represents the position of the 10 chromosomes, while the y-axis represents the SNP index. The dashed line represents the index threshold (0.99). (B) F₂ and BC₁ populations were applied to the BrPYP fine map, narrowing down the area to 101.79 kb. The SNP markers used for mapping are labeled in the schematic diagram of the chromosome. The number of recombinants within the same genotype are written on the left, with phenotypes on the right. “Y” and “PY” refer to yellow and pale-yellow phenotypes, respectively. White and gray segments indicate the same genotype as the yellow parent and F₁, respectively, while the black segment represents the same genotype as the pale-yellow parent. (C) The 13 genes in the candidate region.