highly significantP = 7.31E−6
On two regions at ~ 3.3 Mb and ~ 32.8 Mb of chromosome 2 and two regions at ~ 6.3 Mb and ~ 8.5 Mb of chromosome 7, the highly significant associations of two SNPs (AJAPscaffold4_890918 with P = 7.31E−6 and AJAPscaffold1465_54665 with P = 6.15E−6) on chromosome 2 and two SNPs (AJAPscaffold2_603356 with P = 3.59E−6 and AJAPscaffold517_23072 with P = 5.44E−6 on chromosome 7 were detected for the trait, respectively.