Editorial Open Access

Lots of traits in cereals are quantitatively inherited and controlled by multiple genes. In general, these kinds of traits have wide natural variations. Linkage analysis and Linkage Disequilibrium (LD) analysis are the main approaches to discover and locate target genes underlying the traits. Several kinds of molecular markers such as restriction fragment length polymorphism and simple sequence repeats have been used for genetic mapping. But these markers are not suitable for developing a high-density genetic map. Due to its abundance and uniform distribution throughout a genome, and single nucleotide polymorphisms (SNPs) are considered to be the most desirable molecular markers and have been demonstrated to be efficient markers for developing high-density genome scan [1,2]. Whole-genome sequencing and oligonucleotide microarray are the two main strategies used to create SNP markers. Because of its economic cost, SNP array, a high-throughput genome scan, is an important tool fo