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Título

Analysis of powdery mildew resistance in the Spanish barley core collection

AutorSilvar Casao, Cristina CSIC ORCID; Flath, Kerstin; Kopahnke, Doris; Gracia Gimeno, María Pilar CSIC ORCID ; Lasa Dolhagaray, José Manuel CSIC; Casas Cendoya, Ana María CSIC ORCID ; Igartua Arregui, Ernesto CSIC ORCID ; Ordon, Frank
Palabras claveBarley
core collection
disease resistance
Powdery mildew
gene postulation
Fecha de publicaciónabr-2011
EditorJohn Wiley & Sons
CitaciónSilvar 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)
ResumenThe 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.
Descripción24 Pag., 4 Tabl., 2 Fig. The definitive version is available at: www3.interscience.wiley.com
Versión del editorhttp://dx.doi.org/10.1111/j.1439-0523.2010.01843.x
URIhttp://hdl.handle.net/10261/35119
DOI10.1111/j.1439-0523.2010.01843.x
ISSN0179-9541
E-ISSN1439-0523
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