Application of Low-Density SNP Chips to Resolve Genetic Diversity in Maize
By using 1K low-density SNP markers,population genetic structure,genetic diversity,and genetic relationships among taxa were analyzed in 95 inbred accessions from different subgroups.The results showed that 95 inbred lines from different maize subgroups could be divided into 4 major groups,and the mean main allele fre-quency was 0.760 7;the mean gene diversity was 0.317 8;the observed value of heterozygosity was 0.073 4,and the mean PIC value was 0.257 0.Among the 1 249 SNP markers,72.06％of the polymorphisms were better.The geno-type identification technology based on GenoBaits can analyze the genetic background and kinship of germplasm at low cost and high efficiency,and provides a reliable technical support for specialized and targeted molecular mark-er-assisted breeding in maize.
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