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Development of breeder chip for gene detection and molecular-assisted selection by target sequencing in wheat

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Abstract

Wheat is an essential food crop and its high and stable yield is suffering from great challenges due to the limitations of current breeding technology and various stresses. Accelerating molecularly assisted stress-resistance breeding is critical. Through a meta-analysis of published loci in wheat over the last two decades, we selected 60 loci with main breeding objectives, high heritability, and reliable genotyping, such as stress resistance, yield, plant height, and resistance to spike germination. Then, using genotyping by target sequencing (GBTS) technology, we developed a liquid phase chip based on 101 functional or closely linked markers. The genotyping of 42 loci was confirmed in an extensive collection of Chinese wheat cultivars, indicating that the chip can be used in molecular-assisted selection (MAS) for target breeding goals. Besides, we can perform the preliminary parentage analysis with the genotype data. The most significant contribution of this work lies in translating a large number of molecular markers into a viable chip and providing reliable genotypes. Breeders can quickly screen germplasm resources, parental breeding materials, and intermediate materials for the presence of excellent allelic variants using the genotyping data by this chip, which is high throughput, convenient, reliable, and cost-efficient.

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Data availability

All data generated during the study are included in this published article and its supplement table.

Abbreviations

GBTS:

Genotyping by target sequencing technology

SNP:

Single nucleotide polymorphism

RFLP:

Restriction fragment length polymorphisms

PHS:

Pre-harvest sprouting

MAS:

Marker-assisted selection

QTL:

Quantitative trait loci

MAF:

Minor allele frequency

DS:

Disease severity

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Acknowledgements

The authors thank Prof. Yunbi Xu, the Chinese Academy of Agricultural Sciences, and the International Maize and Wheat Improvement Center (CIMMYT) for valuable advice on this work.

Funding

This study was supported by the Key R&D Program of Shaanxi Province in China (2021ZDLNY0-01), the Key R&D Program of Qinghai Province in China (2022-NK-125), and the Key R&D Program of Yangling Seed Industry Innovation Center (Ylzy-xm-01).

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Authors and Affiliations

Authors

Contributions

QZ and DH designed and conducted the experiments and analyzed the data. MX and QZ wrote the manuscript. MX, SL, YH, and YG assisted in analyzing the SNP array data. XW, MZ, WY, JW, QW, CL, WZ, and CW participated in greenhouse and field experiments. ZK conceived and directed the project and revised the manuscript.

Corresponding authors

Correspondence to Dejun Han or Qingdong Zeng.

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Consent for publication

Yes.

Competing interests

YH and YG are employees of Mol Breeding Biotechnology Co., Ltd.

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Supplementary information

ESM 1

Table S1. The 174 different wheat germplasm were used in this study

ESM 2

Table S2. Loci and SNP markers included in the chip

ESM 3

Table S3. 174 materials target genes test results

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Xiang, M., Liu, S., Wang, X. et al. Development of breeder chip for gene detection and molecular-assisted selection by target sequencing in wheat. Mol Breeding 43, 13 (2023). https://doi.org/10.1007/s11032-023-01359-3

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  • DOI: https://doi.org/10.1007/s11032-023-01359-3

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