Breeding value of primary synthetic wheat genotypes for grain yield

dc.creatorJafarzadeh, J.
dc.creatorBonnett, D.
dc.creatorJannink, J.L.
dc.creatorAkdemir, D.
dc.creatorDreisigacker, S.
dc.creatorSorrells, M.E.
dc.date2017-08-15T21:12:05Z
dc.date2017-08-15T21:12:05Z
dc.date2016
dc.date.accessioned2023-07-17T20:01:30Z
dc.date.available2023-07-17T20:01:30Z
dc.identifierhttp://hdl.handle.net/10883/18823
dc.identifier10.1371/journal.pone.0162860
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7510890
dc.descriptionTo introduce new genetic diversity into the bread wheat gene pool from its progenitor, Aegilops tauschii (Coss.) Schmalh, 33 primary synthetic hexaploid wheat genotypes (SYN) were crossed to 20 spring bread wheat (BW) cultivars at the International Wheat and Maize Improvement Center. Modified single seed descent was used to develop 97 populations with 50 individuals per population using first back-cross, biparental, and three-way crosses. Individuals from each cross were selected for short stature, early heading, flowering and maturity, minimal lodging, and free threshing. Yield trials were conducted under irrigated, drought, and heat-stress conditions from 2011 to 2014 in Ciudad Obregon, Mexico. Genomic estimated breeding values (GEBVs) of parents and synthetic derived lines (SDLs) were estimated using a genomic best linear unbiased prediction (GBLUP) model with markers in each trial. In each environment, there were SDLs that had higher GEBVs than their recurrent BW parent for yield. The GEBVs of BW parents for yield ranged from -0.32 in heat to 1.40 in irrigated trials. The range of the SYN parent GEBVs for yield was from -2.69 in the irrigated to 0.26 in the heat trials and were mostly negative across environments. The contribution of the SYN parents to improved grain yield of the SDLs was highest under heat stress, with an average GEBV for the top 10% of the SDLs of 0.55 while the weighted average GEBV of their corresponding recurrent BW parents was 0.26. Using the pedigree-based model, the accuracy of genomic prediction for yield was 0.42, 0.43, and 0.49 in the drought, heat and irrigated trials, respectively, while for the marker-based model these values were 0.43, 0.44, and 0.55. The SYN parents introduced novel diversity into the wheat gene pool. Higher GEBVs of progenies were due to introgression and retention of some positive alleles from SYN parents.
dc.formatPDF
dc.languageEnglish
dc.publisherPublic Library of Science
dc.relationhttp://hdl.handle.net/11529/10656
dc.relationhttps://figshare.com/articles/dataset/Breeding_Value_of_Primary_Synthetic_Wheat_Genotypes_for_Grain_Yield/3854898
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
dc.rightsOpen Access
dc.source9: e0162860
dc.source11
dc.sourcePLoS ONE
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectWHEAT
dc.subjectGENETIC VARIATION
dc.subjectCROSS-BREEDING
dc.subjectAEGILOPS
dc.subjectFIELD EXPERIMENTATION
dc.subjectGENETIC MARKERS
dc.subjectBREEDING VALUE
dc.titleBreeding value of primary synthetic wheat genotypes for grain yield
dc.typeArticle
dc.coverageSan Francisco, USA


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