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Mining centuries old In situ conserved turkish wheat landraces for grain yield and stripe rust resistance genes

Autor: Sehgal, D.
Autor: Dreisigacker, S.
Autor: Belen, S.
Autor: Kucukozdemir, U.
Autor: Mert, Z.
Autor: Ozer, E.
Autor: Morgounov, A.I.
Año: 2016
URI: http://hdl.handle.net/10883/18830
Descripción: Wheats
Resumen: Wheat landraces in Turkey are an important genetic resource for wheat improvement. An exhaustive 5-year (2009–2014) effort made by the International Winter Wheat Improvement Programme (IWWIP), a cooperative program between the Ministry of Food, Agriculture and Livestock of Turkey, the International Center for Maize and Wheat Improvement (CIMMYT) and the International Center for Agricultural Research in the Dry Areas (ICARDA), led to the collection and documentation of around 2000 landrace populations from 55 provinces throughout Turkey. This study reports the genetic characterization of a subset of bread wheat landraces collected in 2010 from 11 diverse provinces using genotyping-by-sequencing (GBS) technology. The potential of this collection to identify loci determining grain yield and stripe rust resistance via genome-wide association (GWA) analysis was explored. A high genetic diversity (diversity index = 0.260) and a moderate population structure based on highly inherited spike traits was revealed in the panel. The linkage disequilibrium decayed at 10 cM across the whole genome and was slower as compared to other landrace collections. In addition to previously reported QTL, GWA analysis also identified new candidate genomic regions for stripe rust resistance, grain yield, and spike productivity components. New candidate genomic regions reflect the potential of this landrace collection to further increase genetic diversity in elite germplasm.
Lenguaje: English
Editor: Frontiers Research Foundation
Copyright: CIMMYT 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 sutable license for that purpose.
Tipo: Article
Lugar: USA
No de Revista: 201
Revista: Frontiers in genetics
Volumen de la Revista: v. 7
DOI: 10.3389/fgene.2016.00201


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    Wheat - breeding, phytopathology, physiology, quality, biotech

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