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Open Access item Analysis of powdery mildew resistance in the Spanish barley core collection

Authors:Silvar, Cristina
Flath, Kerstin
Kopahnke, Doris
Gracia Gimeno, María Pilar
Lasa Dolhagaray, José Manuel
Casas Cendoya, Ana María
Igartua Arregui, Ernesto
Ordon, Frank
Keywords:barley, core collection, disease resistance, powdery mildew, gene postulation
Issue Date:Apr-2011
Publisher:John Wiley & Sons
Citation:Silvar C, Flath K, Kopahnke D, Gracia MP, Lasa JM, Casas AM, Igartua E, Ordon F. Analysis of powdery mildew resistance in the Spanish barley core collection. Plant breeding 130 (2): 195-202 (2011)
Abstract:The Spanish Barley Core Collection, consisting of one hundred and fifty-nine landrace-derived inbred lines and sixteen cultivars, was characterized for resistance to powdery mildew (Blumeria graminis f. sp. hordei) using a set of 27 isolates with a wide spectra of virulences/avirulences on most of the genes expected to occur in Europe. No landrace-derived line and no cultivar were resistant to all the isolates but at least three landraces showed infection types below 2 for 23 isolates. Twenty-two landraces and one cultivar showed resistance against half of the isolates used. Eleven isolates were sufficient to separate the majority of resistance profiles. In total, thirty-four resistance spectra were detected and fourteen resistance genes/alleles were postulated alone or in combination: MlLa, Mlh, Mlg, Mla22, Mla7(Mlu), Mla7(Mlk), Mlk, Mla12, Mla9, Mla3, Mla6(Mla14), Mlra and Mla1. The majority of resistance spectra are composed only by one line. Resistance in twenty-one landrace-derived lines and four cultivars was based on either unidentified genes or combinations of known and unknown genes/alleles. Therefore, the SBCC may be a source for broadening the genetic base of powdery mildew resistance.
Description:24 Pag., 4 Tabl., 2 Fig. The definitive version is available at: www3.interscience.wiley.com
Publisher version (URL):http://dx.doi.org/10.1111/j.1439-0523.2010.01843.x
URI:http://hdl.handle.net/10261/35119
ISSN:0179-9541
E-ISSNmetadata.dc.identifier.doi = DOI:1439-0523
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Appears in Collections:(EEAD) Artículos

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