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The cherry 6+9K SNP array: a cost-effective improvement to the cherry 6K SNP array for genetic studies.


ABSTRACT: Cherry breeding and genetic studies can benefit from genome-wide genetic marker assays. Currently, a 6K SNP array enables genome scans in cherry; however, only a third of these SNPs are informative, with low coverage in many genomic regions. Adding previously detected SNPs to this array could provide a cost-efficient upgrade with increased genomic coverage across the 670?cM/352.9?Mb cherry whole genome sequence. For sweet cherry, new SNPs were chosen following a focal point strategy, grouping six to eight SNPs within 10-kb windows with an average of 0.6?cM (627?kb) between focal points. Additional SNPs were chosen to represent important regions. Sweet cherry, the fruticosa subgenome of sour cherry, and cherry organellar genomes were targeted with 6942, 2020, and 38 new SNPs, respectively. The +9K add-on provided 2128, 1091, and 70 new reliable, polymorphic SNPs for sweet cherry and the avium and the fruticosa subgenomes of sour cherry, respectively. For sweet cherry, 1241 reliable polymorphic SNPs formed 237 informative focal points, with another 2504 SNPs in-between. The +9K SNPs increased genetic resolution and genome coverage of the original cherry SNP array and will help increase understanding of the genetic control of key traits and relationships among individuals in cherry.

SUBMITTER: Vanderzande S 

PROVIDER: S-EPMC7203174 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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The cherry 6+9K SNP array: a cost-effective improvement to the cherry 6K SNP array for genetic studies.

Vanderzande Stijn S   Zheng Ping P   Cai Lichun L   Barac Goran G   Gasic Ksenija K   Main Dorrie D   Iezzoni Amy A   Peace Cameron C  

Scientific reports 20200506 1


Cherry breeding and genetic studies can benefit from genome-wide genetic marker assays. Currently, a 6K SNP array enables genome scans in cherry; however, only a third of these SNPs are informative, with low coverage in many genomic regions. Adding previously detected SNPs to this array could provide a cost-efficient upgrade with increased genomic coverage across the 670 cM/352.9 Mb cherry whole genome sequence. For sweet cherry, new SNPs were chosen following a focal point strategy, grouping si  ...[more]

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