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

dc.creatorKeser, M.
dc.creatorGummadov, N.
dc.creatorAkin, B.
dc.creatorBelen, S.
dc.creatorMert, Z.
dc.creatorTaner, S.
dc.creatorTopal, A.
dc.creatorYazar, S.
dc.creatorMorgounov, A.
dc.creatorSharma, R.C.
dc.creatorOzdemir, F.
dc.date2020-01-28T20:07:15Z
dc.date2020-01-28T20:07:15Z
dc.date2017
dc.date.accessioned2023-07-17T20:05:22Z
dc.date.available2023-07-17T20:05:22Z
dc.identifier2214-5141 (Online)
dc.identifier2095-5421 (Print)
dc.identifierhttps://hdl.handle.net/10883/20630
dc.identifier10.1016/j.cj.2017.04.004
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7512432
dc.descriptionWheat breeders in Turkey have been developing new varieties since the 1920s, but few studies 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 study was 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 first modern 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.
dc.description533-540
dc.formatPDF
dc.languageEnglish
dc.publisherElsevier
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.source6
dc.source5
dc.sourceThe Crop Journal
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectRainfed Wheat Production
dc.subjectYield
dc.subjectYIELDS
dc.subjectGENETIC GAIN
dc.subjectWINTER WHEAT
dc.subjectRAINFED FARMING
dc.titleGenetic gains in wheat in Turkey: winter wheat for dryland conditions
dc.typeArticle
dc.typePublished Version
dc.coverageTürkiye
dc.coverageNetherlands


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