Field Resistance to the Ug99 Race Group of the Stem Rust Pathogen in Spring Wheat Landraces

被引：33

作者：

Newcomb, M. ^{[1
]}

Acevedo, M. ^{[2
]}

Bockelman, H. E. ^{[1
]}

Brown-Guedira, G. ^{[3
]}

Goates, B. J. ^{[1
]}

Jackson, E. W. ^{[1
]}

Jin, Y. ^{[4
]}

Njau, P. ^{[5
]}

Rouse, M. N. ^{[6
]}

Singh, D. ^{[7
]}

Wanyera, R. ^{[5
]}

Bonman, J. M. ^{[1
]}

机构：

[1] ARS, USDA, Small Grains & Potato Germplasm Res Unit, Aberdeen, ID 83210 USA

[2] N Dakota State Univ, Dept Plant Pathol, Fargo, ND 58108 USA

[3] ARS, USDA, Eastern Reg Genotyping Lab, Raleigh, NC 27695 USA

[4] Univ Minnesota, USDA, ARS, Cereal Dis Lab, St Paul, MN 55108 USA

[5] Kenya Agr Res Inst, Njoro, Kenya

[6] ARS, USDA, Cereal Dis Lab, Aberdeen, ID 83210 USA

[7] Univ Sydney, Plant Breeding Inst, Sydney, NSW 2006, Australia

来源：

PLANT DISEASE | 2013年 / 97卷 / 07期

关键词：

F-SP TRITICI; GENETIC DIVERSITY; GEOGRAPHIC-DISTRIBUTION; LEAF RUST; US WHEAT; MARKERS; SR24; IDENTIFICATION; INHERITANCE; RESOURCES;

D O I：

10.1094/PDIS-02-12-0200-RE

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Wheat landraces provide a source of genetic variability for breeding. The emergence and spread of highly virulent races of the stem rust pathogen (Ug99 race group of Puccinia graminis f. sp. tritici) threaten wheat production globally. Spring wheat landraces were screened for resistance in eight field seasons at the Kenya Agricultural Research Institute, Njoro, where the Ug99 race group has become endemic. Accessions showing resistance in one season were retested and screened with molecular markers associated with resistance genes Sr2, ST24, Sr36, and Lr34/Yr18; two height-reducing genes; and a photoperiod insensitivity allele. Of 2,509 accessions tested, 278 were categorized as resistant based on results from at least two seasons. Of these resistant accessions, 32 were positive for one or more markers for Sr2, Sr36, Rht-B1b, or Rht-D1b, indicating that they do not fit the definition of "landrace" because these genes were likely introduced via modern breeding practices. Thus, 246 resistant "landrace" accessions were identified. Of countries with more than five tested accessions, Afghanistan, Iran, Portugal, Ethiopia, Uzbekistan, Greece, Tajikistan, Bosnia and Herzegovina, and Serbia had at least 10% of tested accessions that were resistant to the Ug99 race group. Future research will characterize the resistance to determine its novelty and incorporate novel genes into improved lines.

引用

页码：882 / 890

页数：9

共 59 条

[21] Development of PCR markers for the selection of wheat stem rust resistance genes Sr24 and Sr26 in diverse wheat germplasm [J].

Mago, R ;

Bariana, HS ;

Dundas, IS ;

Spielmeyer, W ;

Lawrence, GJ ;

Pryor, AJ ;

Ellis, JG .

THEORETICAL AND APPLIED GENETICS, 2005, 111 (03) :496-504

[22] A multiple resistance locus on chromosome arm 3BS in wheat confers resistance to stem rust (Sr2), leaf rust (Lr27) and powdery mildew [J].

Mago, R. ;

Tabe, L. ;

McIntosh, R. A. ;

Pretorius, Z. ;

Kota, R. ;

Paux, E. ;

Wicker, T. ;

Breen, J. ;

Lagudah, E. S. ;

Ellis, J. G. ;

Spielmeyer, W. .

THEORETICAL AND APPLIED GENETICS, 2011, 123 (04) :615-623

[23] An accurate DNA marker assay for stem rust resistance gene Sr2 in wheat [J].

Mago, R. ;

Brown-Guedira, G. ;

Dreisigacker, S. ;

Breen, J. ;

Jin, Y. ;

Singh, R. ;

Appels, R. ;

Lagudah, E. S. ;

Ellis, J. ;

Spielmeyer, W. .

THEORETICAL AND APPLIED GENETICS, 2011, 122 (04) :735-744

[24] Identification and mapping of molecular markers linked to rust resistance genes located on chromosome 1RS of rye using wheat-rye translocation lines [J].

Mago, R ;

Spielmeyer, W ;

Lawrence, GJ ;

Lagudah, ES ;

Ellis, JG ;

Pryor, A .

THEORETICAL AND APPLIED GENETICS, 2002, 104 (08) :1317-1324

[25] Quantitative evaluation of genetic diversity in wheat germplasm using molecular markers [J].

Manifesto, MM ;

Schlatter, AR ;

Hopp, HE ;

Suárez, EY ;

Dubcovsky, J .

CROP SCIENCE, 2001, 41 (03) :682-690

[26] Connectivity of the American Agricultural Landscape: Assessing the National Risk of Crop Pest and Disease Spread [J].

Margosian, Margaret L. ;

Garrett, Karen A. ;

Hutchinson, J. M. Shawn ;

With, Kimberly A. .

BIOSCIENCE, 2009, 59 (02) :141-151

[27]

McFADDEN EDGAR S., 1930, JOUR AMER SOC AGRON, V22, P1020

[28] INHERITANCE OF LEAF RUST AND STEM RUST RESISTANCES IN WHEAT CULTIVARS AGENT AND AGATHA [J].

MCINTOSH, RA ;

DYCK, PL ;

GREEN, GJ .

AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1977, 28 (01) :37-45

[29]

McIntosh RA., 1995, Wheat rusts: an atlas of resistance genes, DOI [DOI 10.1071/9780643101463, 10.1007/978-94-011-0083-0, DOI 10.1007/978-94-011-0083-0]

[30] Detection of Variants of Wheat Stem Rust Race Ug99 (Puccinia graminis f. sp tritici) in Zimbabwe and Mozambique. [J].

Mukoyi, F. ;

Soko, T. ;

Mulima, E. ;

Mutari, B. ;

Hodson, D. ;

Herselman, L. ;

Visser, B. ;

Pretorius, Z. A. .

PLANT DISEASE, 2011, 95 (09) :1188-1188

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