Cytogenetical Studies in Wheat. IX. Monosomic Analyses, Telocentric Mapping and Linkage Relationships of Genes Sr21, Pm4 and Mle

The, T. T.; McIntosh, R. A.; Bennett, Fiona G. A.

doi:10.1071/bi9790115

Cited by 66 publications

(33 citation statements)

References 7 publications

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“…The reaction patterns in RG‐1 (Table 3) corresponded to that of tester line ‘Armada’ carrying Pm4b (Table 1). ‘Runar’, ‘Reno’ and ‘Manu’ most likely inherited Pm4b from the German ELS breeding lines known to possess this gene (Wolfe 1967; The et al 1979; Paderina et al 1995). ‘Kosack’ indirectly inherited Pm4b from ELS through ‘Starke M’.…”

Section: Resultsmentioning

confidence: 99%

Powdery mildew resistance in 155 Nordic bread wheat cultivars and landraces

et al. 2007

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The occurrence and distribution of seedling resistance genes and the presence of adult plant resistance to powdery mildew, was investigated in a collection of 155 Nordic bread wheat landraces and cultivars by inoculation with 11 powdery mildew isolates. Eighty-nine accessions were susceptible in the seedling stage, while 66 accessions showed some resistance. Comparisons of response patterns allowed postulation of combinations of genes Pm1a, Pm2, Pm4b, Pm5, Pm6, Pm8 and Pm9 in 21 lines. Seedling resistance was three times more frequent in spring wheat than in winter wheat. The most commonly postulated genes were Pm1a+Pm2+Pm9 in Sweden, Pm5 in Denmark and Norway, and Pm4b in Finland. Forty-five accessions were postulated to carry only unidentified genes or a combination of identified and unidentified genes that could not be resolved by the 11 isolates. Complete resistance to all 11 isolates was present in 18 cultivars. Adult plant resistance was assessed for 109 accessions after natural infection with a mixture of races. In all, 92% of the accessions developed less than 3-5% pathogen coverage while nine lines showed 10-15% infected leaf surface. The characterization of powdery mildew resistance in Nordic wheat germplasm could facilitate the combination of resistance genes in plant breeding programmes to promote durability of resistance and disease management.

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Section: Resultsmentioning

confidence: 99%

Powdery mildew resistance in 155 Nordic bread wheat cultivars and landraces

et al. 2007

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“…Following assignment to chromosomes harbouring already known Pm genes, allelism tests were made to establish linkage relationships among the genes. This procedure has led to the discovery of several alleles at Pm1 , Pm3 (Zeller et al 1993;Zeller and Hsam 1998), Pm4 (The et al 1979), Pm5 (Huang et al 2000a;Hsam et al 2001) and Pm8/Pm17 (Hsam and Zeller 1997) loci.…”

Section: Introductionmentioning

confidence: 97%

Powdery mildew resistance gene Pm22 in cultivar Virest is a member of the complex Pm1 locus in common wheat (Triticum aestivum L. em Thell.)

et al. 2003

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The powdery mildew resistance gene Pm22, identified in the Italian wheat cultivar Virest and originally assigned to wheat chromosome 1D, was mapped to chromosome 7A with the aid of molecular markers. Mapping of common AFLP and SSR markers in two wheat crosses segregating for Pm22 and Pm1c, respectively, indicated that Pm22 is a member of the complex Pm1 locus. Pm22 also showed a pattern of resistance reaction to a differential set of Blumeria graminis f. sp. tritici isolates that was distinguishable from those from other Pm1 alleles in lines Axminster/8*Cc ( Pm1a), MocZlatka ( Pm1b), Weihenstephan Stamm M1N ( Pm1c) and Triticum spelta var. duhamelianum TRI 2258 ( Pm1d). Based on these results, the gene symbol Pm1e is proposed for the powdery mildew resistance gene in cv. Virest.

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“…This study permitted the conclusion that the RE714 line carries two independent resistance genes, one dominant (PmAb), already described (The et al 1979), and a new recessive gene, temporarily designated mire, unidentified until now.…”

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confidence: 95%

Genetic analysis of powdery‐mildew resistance of a winter‐wheat line, RE714, and identification of a new specific‐resistance gene

Robe

Doussinault

1995

Plant Breeding

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The winter-wheat line RE714, resulting from an intergeneric cross between Aegilops squarrosa and Triticum dicoccum, and implying a sister line of 'Roazon' (VM4) in its genealogy, was obtained in order to increase the genetic diversity for disease resistance. The aim of this study was to identify and characterize the powdery-mildew-resistance gene(s) present in this line at the seedling stage on detached leaves. The comparison of the reaction of the RE714 line and of differential hosts to 24 Erysiphe graminis. f.sp. tritici isolates indicated that only PmAa, PmAb and/or Mlar genes could be present and that a new resistance factor, different from all known mildew-resistance genes, was present in this line. The powdery-mildew reactions of segregating F2 populations produced evidence that RE714 carries the PmAb allelic form and a recessive new resistance gene, tentatively designated mire. While Ae. squarrosa was resistant to most isolates, T. dicoccum was specifically attacked by RE714-virulent isolates and was therefore assumed to be the donor of mire. The VM4 parent was confirmed as the PmAb donor.

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Cytogenetical Studies in Wheat. IX. Monosomic Analyses, Telocentric Mapping and Linkage Relationships of Genes Sr21, Pm4 and Mle

Cited by 66 publications

References 7 publications

Powdery mildew resistance in 155 Nordic bread wheat cultivars and landraces

Powdery mildew resistance in 155 Nordic bread wheat cultivars and landraces

Powdery mildew resistance gene Pm22 in cultivar Virest is a member of the complex Pm1 locus in common wheat (Triticum aestivum L. em Thell.)

Genetic analysis of powdery‐mildew resistance of a winter‐wheat line, RE714, and identification of a new specific‐resistance gene

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