Genetic map, also known as genetic linkage map, is a linear map of the arrangement order and relative distance of molecular markers on chromosomes. The construction of high-density genetic map based on the resequencing technology or GBS is gradually becoming a revolutionary technology favored by researchers. Its advantages lie in the rapid development of a large number of molecular markers at one time and the acquisition of ultra-high-density genetic map, which overcomes the shortcomings of low density molecular markers based on low throughput. , It has become a vital tool in different species for identifying quantitative trait locus (QTL) analysis, promoting the quality of genome assembly and assisting crop breeding
