Genetic gains in wheat in Turkey: Winter wheat for dryland conditions

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dc.contributor.authorKeser, Mesut
dc.contributor.authorGummadov, Nurberdy
dc.contributor.authorAkin, Beyhan
dc.contributor.authorBelen, Savas
dc.contributor.authorMert, Zafer
dc.contributor.authorTaner, Seyfi
dc.contributor.authorTopal, Ali
dc.date.accessioned2020-03-26T19:41:48Z
dc.date.available2020-03-26T19:41:48Z
dc.date.issued2017
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractWheat breeders in Turkey have been developing newvarieties since the 1920s, but fewstudies have evaluated the rates of genetic improvement. This study determined wheat genetic gains by evaluating 22 winter/facultative varieties released for rainfed conditions between 1931 and 2006. The studywas conducted at three locations in Turkey during 2008-2012, with a total of 21 test sites. The experimental design was a randomized complete block with four replicates in 2008 and 2009 and three replicates in 2010-2012. Regression analysis was conducted to determine genetic progress over time. Mean yield across all 21 locations was 3.34 t ha(-1), but varied from 1.11 t ha(-1) to 6.02 t ha(-1) and was highly affected by moisture stress. Annual genetic gain was 0.50% compared to Ak-702, or 0.30% compared to the firstmodern landmark varieties. The genetic gains in drought-affected sites were 0.75% compared to Ak-702 and 0.66% compared to the landmark varieties. Modern varieties had both improved yield potential and tolerance to moisture stress. Rht genes and rye translocations were largely absent in the varieties studied. The number of spikes per unit area decreased by 10% over the study period, but grains spike(-1) and 1000-kernel weight increased by 10%. There were no significant increases in harvest index, grain size, or spike fertility, and no significant decrease in quality over time. Future use of Rht genes and rye translocations in breeding programs may increase yield under rainfed conditions. (C) 2017 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.en_US
dc.description.sponsorshipCRP WHEAT; Turkish Ministry of Food, Agriculture, and LivestockGida Tarim Ve Hayvancilik Bakanligien_US
dc.description.sponsorshipThe International Winter Wheat Improvement Program is supported by CRP WHEAT and the Turkish Ministry of Food, Agriculture, and Livestock. Molecular markers were identified by Dr. Susanne Dreisigacker at CIMMYT, Mexico. The authors highly appreciate suggestions and technical editorial assistance from Emma Quilligan.en_US
dc.identifier.doi10.1016/j.cj.2017.04.004en_US
dc.identifier.endpage540en_US
dc.identifier.issn2095-5421en_US
dc.identifier.issn2214-5141en_US
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage533en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.cj.2017.04.004
dc.identifier.urihttps://hdl.handle.net/20.500.12395/35151
dc.identifier.volume5en_US
dc.identifier.wosWOS:000417074400008en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.ispartofCROP JOURNALen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectGenetic gainen_US
dc.subjectRainfed wheat productionen_US
dc.subjectWinter wheaten_US
dc.subjectYielden_US
dc.titleGenetic gains in wheat in Turkey: Winter wheat for dryland conditionsen_US
dc.typeArticleen_US

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