Fig. 6
GWAS analysis and discovery of candidate genes for OTL and OtL. (A) Manhattan plot for the OTL of tea plant by the optimal model of GLM, and Manhattan plot for the OtL of tea plant by the optimal model of MLM. The red dashed horizontal line indicates the significance threshold (− log10(P) is about equal to 5.00). (B, C and D) Genes within 50 Kb regions surrounding the significant trait-associated SNP loci according to BLAST analysis using the tea plant reference genome. (B) a is peroxidase gene, 1.79 Kb. (C) b is L-tryptophan–pyruvate aminotransferase gene, 8.30 Kb. c is DNA methylation-related gene, 2.39 Kb. (D) d is receptor-like protein kinase gene, 27.03 Kb. (E) Molecular function annotations of candidate genes