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  • Li, FajiXinjiang Agr Univ, Coll Agron, Urumqi 830052, Xinjiang, Peoples R China.;CAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)

Genetic architecture of grain yield in bread wheat based on genome-wide association studies

  • Article/chapterEnglish2019

Publisher, publication year, extent ...

  • 2019-04-29
  • BioMed Central,2019
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-251709
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-251709URI
  • https://doi.org/10.1186/s12870-019-1781-3DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20190520
  • BackgroundIdentification of loci for grain yield (GY) and related traits, and dissection of the genetic architecture are important for yield improvement through marker-assisted selection (MAS). Two genome-wide association study (GWAS) methods were used on a diverse panel of 166 elite wheat varieties from the Yellow and Huai River Valleys Wheat Zone (YHRVWD) of China to detect stable loci and analyze relationships among GY and related traits.ResultsA total of 326,570 single nucleotide polymorphism (SNP) markers from the wheat 90K and 660K SNP arrays were chosen for GWAS of GY and related traits, generating a physical distance of 14,064.8Mb. One hundred and twenty common loci were detected using SNP-GWAS and Haplotype-GWAS, among which two were potentially functional genes underpinning kernel weight and plant height (PH), eight were at similar locations to the quantitative trait loci (QTL) identified in recombinant inbred line (RIL) populations in a previous study, and 78 were potentially new. Twelve pleiotropic loci were detected on eight chromosomes; among these the interval 714.4-725.8Mb on chromosome 3A was significantly associated with GY, kernel number per spike (KNS), kernel width (KW), spike dry weight (SDW), PH, uppermost internode length (UIL), and flag leaf length (FLL). GY shared five loci with thousand kernel weight (TKW) and PH, indicating significantly affected by two traits. Compared with the total number of loci for each trait in the diverse panel, the average number of alleles for increasing phenotypic values of GY, TKW, kernel length (KL), KW, and flag leaf width (FLW) were higher, whereas the numbers for PH, UIL and FLL were lower. There were significant additive effects for each trait when favorable alleles were combined. UIL and FLL can be directly used for selecting high-yielding varieties, whereas FLW can be used to select spike number per unit area (SN) and KNS.ConclusionsThe loci and significant SNP markers identified in the present study can be used for pyramiding favorable alleles in developing high-yielding varieties. Our study proved that both GWAS methods and high-density genetic markers are reliable means of identifying loci for GY and related traits, and provided new insight to the genetic architecture of GY.

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  • Wen, WeieXinjiang Agr Univ, Coll Agron, Urumqi 830052, Xinjiang, Peoples R China.;CAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)
  • Liu, JindongCAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)
  • Zhang, YongCAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)
  • Cao, ShuangheCAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)
  • He, ZhonghuCAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China.;CAAS, Int Maize & Wheat Improvement Ctr CIMMYT China Of, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)
  • Rasheed, AwaisCAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China.;CAAS, Int Maize & Wheat Improvement Ctr CIMMYT China Of, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)
  • Jin, HuiCAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China.;Heilongjiang Acad Agr Sci, Sinorussia Agr Sci & Technol Cooperat Ctr, 368 Xuefu St, Harbin 150086, Heilongjiang, Peoples R China. (author)
  • Zhang, ChiKTH,Skolan för kemivetenskap (CHE)(Swepub:kth)u17e9mik (author)
  • Yan, JunCAAS, Inst Cotton Res, 38 Huanghe St, Anyang 455000, Henan, Peoples R China. (author)
  • Zhang, PingzhiAnhui Acad Agr Sci, Crop Res Inst, 40 Nongke South St, Hefei 230001, Anhui, Peoples R China. (author)
  • Wan, YingxiuAnhui Acad Agr Sci, Crop Res Inst, 40 Nongke South St, Hefei 230001, Anhui, Peoples R China. (author)
  • Xia, XianchunCAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (author)
  • Xinjiang Agr Univ, Coll Agron, Urumqi 830052, Xinjiang, Peoples R China.;CAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China.CAAS, Natl Wheat Improvement Ctr, Inst Crop Sci, 12 Zhongguancun South St, Beijing 100081, Peoples R China. (creator_code:org_t)

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  • In:BMC Plant Biology: BioMed Central191471-2229

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