Identification of QTL controlling high levels of partial resistance to Fusarium solani f. sp pisi in pea

被引：19
作者：
Coyne, Clarice J. [1 ]
Pilet-Nayel, Marie-Laure [2 ]
McGee, Rebecca J. [3 ]
Porter, Lyndon D. [4 ]
Smykal, Petr [5 ]
Gruenwald, Niklaus J. [6 ]
机构：
[1] Washington State Univ, USDA ARS Western Reg Plant Intro, Pullman, WA 99164 USA
[2] INRA, UMR1349, Inst Genet Environm & Protect Plantes, F-35653 La Rheu, France
[3] USDA ARS, Grain Legume Genet & Physiol Res, Pullman, WA 99164 USA
[4] USDA ARS, Vegetable & Forage Crops Res Unit, Prosser, WA 99350 USA
[5] Palacky Univ, Dept Bot, CR-77147 Olomouc, Czech Republic
[6] USDA ARS, Hort Crops Res Lab, Corvallis, OR 97330 USA
来源：
PLANT BREEDING | 2015年 / 134卷 / 04期
关键词：
RILs; MAS; disease resistance; Fusarium solani f; sp; pisi; Pisum sativum; quantitative trait loci; composite interval mapping; QUANTITATIVE TRAIT LOCI; ROOT-ROT; MYCOSPHAERELLA-PINODES; DISEASE-RESISTANCE; CANDIDATE GENES; REGISTRATION; GERMPLASM; PATHOGENICITY; EXPRESSION; FAMILY;
D O I：
10.1111/pbr.12287
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Fusarium root rot is a common biotic restraint on pea yields, and genetic resistance is the most feasible method for improving pea production. This study was conducted to discover quantitative trait loci (QTL) controlling genetic partial resistance to Fusarium root rot caused by Fusarium solani (Mart.) Sacc. f.sp. pisi (F.R. Jones) W.C. Snyder & H.N. Hans (Fsp). A RIL population was screened in a Fusarium root rot field disease nursery for 3years. Composite interval mapping was employed for QTL detection using the means of disease severity from three growing seasons. Five QTL were identified, including one QTL identified in all three years. The multiyear QTL Fsp-Ps2.1 contributed to a significant portion of the phenotypic variance (22.1-72.2%), while a second QTL, Fsp-Ps6.1, contributed 17.3% of the phenotypic variance. The other single growing season QTL are of additional interest as they colocate with previously reported pea-Fusarium root rot resistance QTL. QTL Fsp-Ps2.1, Fsp-Ps3.1, Fsp-4.1 and Fsp-Ps7.1 are flanked by codominant SSRs and may be useful in marker-assisted breeding of pea for high levels of partial resistance to Fsp.
引用
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页码：446 / 453
页数：8
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