Fig. 4
Location and comparison of SNPs significantly associated with drought tolerance related traits. Physical positions are based on the Glyma.Wm82.a2 version of the soybean genome. SNPs identified in GWAS from current study that met -log10(P) > 4 significance threshold are shown as larger circles for a) carbon isotope composition (δ13C), b) Nitrogen concentration and nitrogen isotope composition (δ15N), and c) normalized decrease in transpiration rate (NDTR) in response to silver nitrate treatment. Smaller circles represent SNPs identified in a) [11, 12], b) [26] that were converted from version 1 to 2 physical positions of the soybean genome assembly, and c) location of gene models with the term “aquaporin” in their functional annotation from Phytozome v12.1. BARC_1.01_Gm20_46575262_G_A identified for nitrogen concentration in [26] does not have a perfect match in the version 2 assembly, and therefore was excluded from this comparison