Population structure, genetic diversity and linkage disequilibrium in elite winter wheat assessed with SNP and SSR markers

被引：144

作者：

Wuerschum, Tobias ^{[1
]}

Langer, Simon M. ^{[1
]}

Longin, C. Friedrich H. ^{[1
]}

Korzun, Viktor ^{[2
]}

Akhunov, Eduard ^{[3
]}

Ebmeyer, Erhard ^{[2
]}

Schachschneider, Ralf ^{[4
]}

Schacht, Johannes ^{[5
]}

Kazman, Ebrahim ^{[6
]}

Reif, Jochen C. ^{[1
]}

机构：

[1] Univ Hohenheim, State Plant Breeding Inst, D-70593 Stuttgart, Germany

[2] KWS LOCHOW GMBH, D-29303 Bergen, Germany

[3] Kansas State Univ, Dept Plant Pathol, Ctr Sci, Manhattan, KS 66506 USA

[4] Nordsaat Saatzuchtgesell mbH, D-38895 Langenstein, Germany

[5] Limagrain GmbH, D-31226 Peine Rosenthal, Germany

[6] Lantmannen SW Seed Hadmersleben GmbH, D-39398 Hadmersleben, Germany

来源：

THEORETICAL AND APPLIED GENETICS | 2013年 / 126卷 / 06期

关键词：

SINGLE NUCLEOTIDE POLYMORPHISMS; GENOMIC SELECTION; AGRONOMIC TRAITS; PATTERNS; MAPS;

D O I：

10.1007/s00122-013-2065-1

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Modern genomics approaches rely on the availability of high-throughput and high-density genotyping platforms. A major breakthrough in wheat genotyping was the development of an SNP array. In this study, we used a diverse panel of 172 elite European winter wheat lines to evaluate the utility of the SNP array for genomic analyses in wheat germplasm derived from breeding programs. We investigated population structure and genetic relatedness and found that the results obtained with SNP and SSR markers differ. This suggests that additional research is required to determine the optimum approach for the investigation of population structure and kinship. Our analysis of linkage disequilibrium (LD) showed that LD decays within approximately 5-10 cM. Moreover, we found that LD is variable along chromosomes. Our results suggest that the number of SNPs needs to be increased further to obtain a higher coverage of the chromosomes. Taken together, SNPs can be a valuable tool for genomics approaches and for a knowledge-based improvement of wheat.

引用

页码：1477 / 1486

页数：10

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