Figure 3. Using the LDBlockShow software, the LD between SNPs in this region was calculated (using the R² statistic), and the solid spine of the LD method (BlockType 2) was employed to identify haplotype blocks. LD heatmap: Each square in the figure represents the LD strength (R² value) between two SNPs, with colors ranging from white (R² = 0) to red (R² = 1). Haplotype blocks: The triangular regions in the figure are divided into multiple blocks, where SNPs within each block exhibit strong LD, representing a potential haplotype. Significant SNPs: The four annotated SNPs are located at specific positions on chromosome 8. Their linkage with other SNPs can be observed through the LD heatmap.