SNP9-188989821 molecular marker related to notoginsenoside R1 content in pseudo-ginseng and application of SNP9-188989821 molecular marker

The invention discloses application of a kit for detecting an SNP (Single Nucleotide Polymorphism) molecular marker related to the content of notoginsenoside R1 in panax notoginseng in character breeding of the content of notoginsenoside R1 in panax notoginseng, the SNP molecular marker is SNP9-1889898821 and is located at the 188989821th basic group of Chr5 chromosome, and the mutation type of the SNP molecular marker is C/G. The KASP primer combination developed by the invention can accurately distinguish pseudo-ginseng with high and low notoginsenoside R1 content, can be applied to pseudo-ginseng molecular-assisted marker breeding and shorten the breeding period of a new variety, and has the advantages of low detection cost, no environmental limitation, high detection result accuracy and easy repetition. The method has important theoretical and practical guiding significance for accelerating the genetic improvement process of panax notoginseng breeding with high notoginsenoside R1 content and improving the