Identification of novel QTL for resistance to Fusarium head blight in a tetraploid wheat population

被引：38
作者：
Ruan, Yuefeng [1 ,2 ]
Comeau, Andre [3 ]
Langevin, Franois [3 ]
Hucl, Pierre [1 ,2 ]
Clarke, John M. [1 ,2 ]
Brule-Babel, Anita [4 ]
Pozniak, Curtis J. [1 ,2 ]
机构：
[1] Univ Saskatchewan, Ctr Crop Dev, Saskatoon, SK S7N 5A8, Canada
[2] Univ Saskatchewan, Dept Plant Sci, Saskatoon, SK S7N 5A8, Canada
[3] Agr & Agri Food Canada, Soils & Crops Res & Dev Ctr, Ste Foy, PQ G1V 2J3, Canada
[4] Univ Manitoba, Dept Plant Sci, Winnipeg, MB R3T 2N2, Canada
来源：
GENOME | 2012年 / 55卷 / 12期
关键词：
Fusarium head blight; acetyl-deoxynivalenol; durum wheat; QTL mapping; QUANTITATIVE TRAIT LOCI; SPRING WHEAT; DEOXYNIVALENOL ACCUMULATION; FIELD-RESISTANCE; LINKAGE MAP; DURUM; MICROSATELLITE; ASSOCIATION; GENE; COLOR;
D O I：
10.1139/gen-2012-0110
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Most tetraploid durum wheat (Triticum turgidum L var. durum) cultivars are susceptible to Fusarium head blight (FHB). This study reports novel quantitative trait loci (QTL) associated with FHB resistance. A backcross recombinant inbred line (BCRIL) population was developed from the cross BGRC3487/2*DT735, and 160 lines were evaluated for resistance to Fusarium graminearum Schwabe (teleomorph Gibberella zeae (Schwein. Petch) in field trials over 3 years (2008-2010) and to a F. graminearum 3-acetyl-deoxynivalenol (3-ADON) chemotype in greenhouse trials. The population was genotyped with 948 polymorphic loci using DArT and microsatellite markers. Eleven QTL were associated with FHB resistance under field conditions on chromosomes 2A, 3B, 5A, 5B, 7A, and 7B. Two of these, QFhb.usw-3B from BGRC3487 and QFhb.usw-7A2, were consistently detected over environments. The QFhb.usw-3B QTL was in a similar position to a resistance QTL in hexaploid wheat. The combination of the two QTL reduced field index by 53.5%-86.2%. Two QTL for resistance to the 3-ADON chemotype were detected on chromosomes 1B and 4B. Both BGRC3487 and DT735 could provide new sources of FHB resistance and the combination of QTL reported here could be valuable tools in breeding FHB-resistant durum wheat.
引用
收藏
页码：853 / 864
页数：12
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