Genetic architecture of resistance to Septoria tritici blotch (Mycosphaerella graminicola) in European winter wheat

被引：46
作者：
Kollers, Sonja [1 ,2 ]
Rodemann, Bernd [3 ]
Ling, Jie [1 ]
Korzun, Viktor [2 ]
Ebmeyer, Erhard [2 ]
Argillier, Odile [4 ]
Hinze, Maike [5 ]
Plieske, Joerg [6 ]
Kulosa, Dagmar [6 ]
Ganal, Martin W. [6 ]
Roeder, Marion S. [1 ]
机构：
[1] Leibniz Inst Plant Genet & Crop Plant Res IPK, Gatersleben, Germany
[2] KWS LOCHOW GMBH, Bergen, Germany
[3] JKI, Braunschweig, Germany
[4] Syngenta Seeds SAS, Toulouse, France
[5] Syngenta Seeds GmbH, Bad Salzuflen, Germany
[6] TraitGenetic GmbH, Gatersleben, Germany
来源：
MOLECULAR BREEDING | 2013年 / 32卷 / 02期
关键词：
Septoria tritici blotch; Triticum aestivum; Association mapping; Stb genes; Mycosphaerella graminicola; QUANTITATIVE TRAIT LOCI; HEAD BLIGHT RESISTANCE; NEAR-ISOGENIC LINES; AESTIVUM L; ASSOCIATION ANALYSIS; BREAD WHEAT; CHROMOSOMAL LOCATION; BREEDING PROGRAMS; HEXAPLOID WHEAT; PLANT HEIGHT;
D O I：
10.1007/s11032-013-9880-6
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Genome-wide marker-trait associations (MTA) were established in a population of 358 European winter wheat cultivars and 14 spring wheat cultivars (Triticum aestivum L.) for resistance to Septoria tritici blotch caused by the fungal pathogen Mycosphaerella graminicola. The MTA were based on field data in two consecutive years and genotypic data on 732 microsatellite markers. Best linear unbiased estimations (BLUEs) for resistance were calculated across the trials and ranged from 0.67 (most resistant) to 19.63 (most susceptible) with an average value of 4.93. A total of 115 MTA relating to 68 molecular markers was discovered for the two trials and BLUEs by using a mixed linear model corrected by a kinship matrix. In addition, two candidate genes, Ppd-D1 for photoperiodism and the dwarfing gene Rht-D1, were significantly associated with resistance to Septoria tritici blotch. Several MTA co-located with known resistance genes, e.g. Stb1, 3, 4, 6 and 8, while multiple additional MTA were discovered on several chromosomes, such as 2A, 2D, 3A, 5B, 7A and 7D. The results provide proof of concept for the method of genome-wide association analysis and indicate the presence of further Stb resistance genes in the European winter wheat pool.
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收藏
页码：411 / 423
页数：13
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