GWAS Characterization of the Genetic Regions Associated with Nine Important Agronomic Traits in Tomato (Solanum lycopersicum L.)

Understanding the genetic background of elite cultivated tomato germplasm resources in crossbreeding and revealing basis complex traits are vital for better-targeted expansion creation strong hybrids. Here, we obtained approximately 21 million single-nucleotide polymorphisms (SNPs) based on sequencing 212 accessions population structure which was revealed. More importantly, found that target genes distributed chromosomes 1, 5, 9, 11 may be actively selected breeding. In particular, significant signals related to soluble sugar content (chr1_94170222, chr1_96273188, chr9_4167512, chr11_55592768), fruit firmness (chr5_4384919 chr5_5111452) gray leaf spot resistance (chr11_8935252 chr11_9707993) were also detected corresponding chromosomes, respectively. Overall, reported 28 association nine agronomic a mixed linear model (MLM), including 114 genes. Among these signals, contained potential novel six traits. These candidate located genomic regions without previously known loci or different explained 16% phenotypic variance average tomatoes. findings could accelerate identification validation QTLs, improving understanding quantitative results provide breeding improvement.