Prüfung vonAegilops-Arten auf Resistenz gegenPseudocercosporella herpotrichoides (Fron) Deighton

Groll, Ursula; Frauenstein, Käte; Hammer, Karl

doi:10.1007/bf01997269

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…Resistance is uncommon in bread wheat; therefore, wild grasses closely or distantly related to wheat have been evaluated for resistance to eyespot (4,7,10,13,15,26,36,37). Eyespot resistance was found in several diploid species, including Triticum tauschii (Coss.)…”

Section: Eyespot Caused By Tapesia Yallundae Wallwork and Spooner (Anamentioning

confidence: 99%

A New Source of Resistance to Tapesia yallundae Associated with a Homoeologous Group 4 Chromosome in Thinopyrum ponticum

Li¹,

Arterburn²,

Jones³

et al. 2004

Phytopathology®

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Wheat (Thinopyrum ponticum line SS767; PI 611939) with 42 chromosomes previously was identified as a new source of eyespot resistance. Individual plants of SS767 were tested for reaction to Tapesia yallundae, the major pathogen of eyespot in the Pacific Northwest region of the United States. Resistance of this line was similar to the resistant winter wheat cv. Madsen (carrying gene Pch1 for eyespot resistance). Polymerase chain reaction analysis with primers specific for the J or E genomes revealed that SS767 contains Thinopyrum chromatin. Cytological and Cbanding analyses demonstrated that SS767 is a chromosome substitution line in which wheat chromosome 4D is replaced by a homoeologous group 4 chromosome of Thinopyrum ponticum. Genomic in situ hybridization using St genomic DNA from Pseudoroegneria strigosa as a probe, which can differentiate chromosomes from different genomes of Thinopyrum, indicated that this chromosome belongs to the J genome. Molecular analysis of an F(2) population segregating for chromosome 4J and resistance to eyespot confirmed that eyespot resistance in line SS767 is associated with chromosome 4J of Thinopyrum ponticum. This is the first report of genetic control of resistance to eyespot derived from Thinopyrum ponticum. This source of resistance provides a new opportunity to improve wheat resistance to eyespot by adding to the diversity of resistance sources available.

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Section: Eyespot Caused By Tapesia Yallundae Wallwork and Spooner (Anamentioning

confidence: 99%

A New Source of Resistance to Tapesia yallundae Associated with a Homoeologous Group 4 Chromosome in Thinopyrum ponticum

Li¹,

Arterburn²,

Jones³

et al. 2004

Phytopathology®

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“…During a period of 60 years in total 70,853 and 78,440 tests against different diseases were performed at the seedling and adult plant stage, respectively. Parts of the data have been published earlier in subsequent publications, mainly in German language (Nover 1962;Nover and Lehmann 1964, 1967, 1969, 1978Nover et al 1972;Frauenstein and Hammer 1985;Groll et al 1985;Valkoun et al 1985).…”

Section: Introductionmentioning

confidence: 97%

Analysis of Wheat Disease Resistance Data Originating from Screenings of Gatersleben Genebank Accessions during 1933 and 1992

Börner¹,

Freytag²,

Sperling³

2006

Genet Resour Crop Evol

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Series of 10,348 accessions belonging to 21 species (hexaploid, tetraploid, diploid) of the genus Triticum and 489 accessions belonging to 20 species of the genus Aegilops were scored for disease resistance during a period of 60 years. Tests were performed at the seedling stage for powdery mildew (Erysiphe graminis DC. f. sp. tritici March.), leaf rust (Puccinia recondita Rob. ex Desm. f. sp. tritici Erikss.), stripe rust (Puccinia striiformis West. f. sp. tritici Erikss.) and eyespot (Pseudocercosporella herpotrichoides (Fron.) Deight.) but also at the adult plant stage considering powdery mildew, leaf rust, stripe rust, eyespot and glume blotch (Septoria nodorum Berk.). About 150,000 disease scores recorded on index cards using different scoring scales were transferred to the computer, converted into a 1-9 scale and used to summarise the results. Within the genus Triticum 20% of the material analysed was classified as heterogeneous. For the accessions without detectable segregation a large variability for resistance/susceptibility was detected. At the adult plant stage resistant accessions without visible infections were identified for all diseases. The percentages of resistant accessions at that growth stage were always higher than the ones found in the material tested at the seedling stage. The probability for finding resistant material was shown to be highest in the diploid species (>50%) but decreased with increasing ploidy level to about 10% in the hexaploids. For Aegilops it was shown that most of the accessions were homogeneous and highly resistant against powdery mildew (seedling and adult plant stage), leaf rust (adult plant stage) and eyespot (seedling and adult plant stage/ natural infection).

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Vorarbeiten zur monographischen Darstellung von Wildpflanzensortimenten:Aegilops L. — Resistenzuntersuchungen

Hammer

1985

Die Kulturpflanze

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Prüfung vonAegilops-Arten auf Resistenz gegenPseudocercosporella herpotrichoides (Fron) Deighton

Cited by 6 publications

References 10 publications

A New Source of Resistance to Tapesia yallundae Associated with a Homoeologous Group 4 Chromosome in Thinopyrum ponticum

A New Source of Resistance to Tapesia yallundae Associated with a Homoeologous Group 4 Chromosome in Thinopyrum ponticum

Analysis of Wheat Disease Resistance Data Originating from Screenings of Gatersleben Genebank Accessions during 1933 and 1992

Vorarbeiten zur monographischen Darstellung von Wildpflanzensortimenten:Aegilops L. — Resistenzuntersuchungen

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