SNP (Single Nucleotide Polymorphism) site for identifying color of tomato seed, KASP marker primer group and application of SNP site and KASP marker primer group

The invention belongs to the technical field of biology, and particularly discloses an SNP site and a KASP marker primer group for identifying the color of tomato seeds and application of the SNP site and the KASP marker primer group for identifying the color of the tomato seeds. When the SNP site is located at the 501bp position of SEQ ID NO: 1, the polymorphism is T/C, and the basic group is T, the color of the tomato seeds is normal grey yellow; when the basic group is C, the color of the tomato seeds is dark brown; by utilizing the SNP site, the color of the tomato seeds can be distinguished well; the invention further discloses a KASP molecular marker primer group of the SNP site of the tomato seed color, the KASP molecular marker primer group is adopted to perform identification or auxiliary identification on a tomato breeding population, a tomato strain with dark brown seeds is obtained, and it is indicated that the molecular marker primer group is practically and effectively used for molecular marker