INHERITANCE OF RESISTANCE TO PUCCINIA CORONATA AVENAE AND ITS ASSOCIATION WITH SEED CHARACTERISTICS IN FOUR ACCESSIONS OF AVENA STERILIS

1976 ◽  
Vol 18 (4) ◽  
pp. 717-726 ◽  
Author(s):  
F. A. Kiehn ◽  
R. I. H. McKenzie ◽  
D. E. Harder
Keyword(s):  
Dominant Gene ◽  
Recessive Gene ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Seed Color ◽  
Inheritance Of Resistance ◽  
Avena Sterilis ◽  
Seedling Resistance ◽  
Oat Crown Rust ◽  
Puccinia Coronata Avenae

The inheritance of resistance to oat crown rust Puccinia coronata Cda. f. sp. avenae Eriks. was studied in four accessions of Avena sterilis L. Three of the accessions, CAV 4963, CAV 1358 and CAV 1376, originated from Israel, and one, CAV 1964, from Algeria. Seedling rust tests on F2 backcross families indicated that a single recessive gene, Pc-55, in CAV 4963 conditioned seedling resistance to 10 of 12 crown rust isolates tested. In CAV 1964, a single dominant gene Pc-56 conferred resistance in both the adult and seedling stages to all crown rust isolates tested except race 239, while a second dominant gene conditioned resistance to only two of the twelve cultures used. From adult and seedling tests it appeared that the resistance in CAV 1358 and CAV 1376 was conditioned by a number of recessive minor additive genes. The genes Pc-55 and Pc-56 are not allelic with the A. sterilis derived genes Pc-35, Pc-38, Pc-40, Pc-45, Pc-46, Pc-47, Pc-48, and Pc-50. Genes Pc-39 and Pc-55 are either very closely linked or allelic and Pc-56 is not closely linked to either Pc-39 or Pc-55. The usefulness of genes Pc-55 and Pc-56 was demonstrated in tests which showed that both genes were effective against 99.8 and 94.5%, respectively, of all crown rust cultures isolated in Canada in 1974 and 1975. The genes for seed color and awn character did not appear to be linked to the crown rust resistance genes. In CAV 4963, CAV 1358 and CAV 1376 the genes for grey color and wild type awns appeared to be linked with recombination values of about 2, 23 and 18%, respectively.

Inheritance of resistance to Puccinia coronata avenae and P. graminis avenae in an accession of Avena sterilis from Spain

Genome ◽  
1990 ◽  
Vol 33 (2) ◽  
pp. 198-202 ◽  
Author(s):  
D. E. Harder ◽  
J. Chong ◽  
P. D. Brown ◽  
J. W. Martens
Keyword(s):  
Stem Rust ◽  
Dominant Gene ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Adult Plant ◽  
Single Dominant Gene ◽  
Avena Sterilis ◽  
Seedling Resistance ◽  
Puccinia Coronata Avenae ◽  
Plant Stage

Accessions of wild Avena spp. obtained from the Iberian Peninsula were screened for resistance to oat crown and oat stem rust. Of a number of accessions which showed resistance, A. sterilis accession IB3056 was selected for further genetic analysis because it had combined resistance to both crown and stem rusts and as a hexaploid was readily hybridizable with A. sativa. IB3056 was crossed and backcrossed with the susceptible cultivar 'Makuru' and progeny were analyzed for segregation to a range of rust races. A single dominant gene conferred resistance to crown rust. The resistance was highly effective against all isolates of Puccinia coronata avenae tested. The crown rust resistance of IB3056 was due either to gene Pc68 or was very closely linked or allelic to Pc68. Seedling plants of the IB3056 parent were susceptible to all isolates of P. graminis avenae tested, but in the adult plant stage they were resistant. All IB3056/2* Makuru progeny also were susceptible to stem rust as seedlings, but BC1F2 adult plants segregated for resistance in ratios indicating a single dominant gene, designated Pg17.Key words: oat crown rust, oat stem rust, adult plant resistance, seedling resistance

INHERITANCE OF CROWN RUST RESISTANCE IN THREE ACCESSIONS OF AVENA STERILIS

1980 ◽  
Vol 22 (1) ◽  
pp. 27-33 ◽  
Author(s):  
D. E. Harder ◽  
R. I. H. McKenzie ◽  
J. W. Martens
Keyword(s):  
Rust Resistance ◽  
Dominant Gene ◽  
Crown Rust ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Avena Sterilis ◽  
Oat Crown Rust ◽  
Crown Rust Resistance ◽  
Resistance Spectrum ◽  
Dominant Genes

The inheritance of resistance to oat crown rust was studied in three accessions of Avena sterilis L. Accession CAV 4274 originated from Morocco, CAV 4540 from Algeria, and CAV 3695 from Tunisia. Seedling rust tests on F2 backcross families indicated the presence of two dominant genes for crown rust resistance in CAV 4274. One of these, a gene conditioning resistance to most races tested, was linked or allelic to gene Pc-38, and was designated gene Pc-62. The second gene conferred resistance only to one of the six races studied, and was not tested further. In CAV 4540, a single dominant gene, Pc-63 was possibly allelic with Pc-62 and linked or allelic to Pc-38. Genes Pc-62 and 63 are generally similar to Pc-38 in their resistance spectrum, but these three genes are differentiated by races CR 102, CR 103, and CR 107. A single dominant gene in CAV 3695 appeared to be Pc-50.

The inheritance of resistance to Puccinia coronata and of floret characters in Avena sterilis

1983 ◽  
Vol 25 (4) ◽  
pp. 329-335 ◽  
Author(s):  
L. S. L. Wong ◽  
R. I. H. McKenzie ◽  
D. E. Harder ◽  
J. W. Martens
Keyword(s):  
Rust Resistance ◽  
Dominant Gene ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Inheritance Of Resistance ◽  
Avena Sterilis ◽  
Field Isolates ◽  
Crown Rust Resistance ◽  
Dominant Genes

The inheritance of resistance to Puccinia coronata, awn development, lemma pubescence, and lemma color were studied in the Avena sterilis accessions CAV 4248, CAV 4656, and CAV 4904. Three independent, partially dominant genes (Pc-64, Pc-65, Pc-66) in CAV 4248, one partially dominant gene (Pc-67) in CAV 4656, and a dominant gene (Pc-68) in CAV 4904 were identified which conferred resistance to P. coronata. Genes Pc-64, Pc-65, Pc-66, Pc-67, and Pc-68 conferred resistance to 13, 8, 6, 12, and 14 races, respectively, of the 14 races of P. coronata tested. Gene Pc-68 conferred resistance to all field isolates of P. coronata collected in Canada in 1981 and was found to be closely linked or allelic to gene Pc-46. Awns and lemma pubescence were inherited monogenically in crosses with all three CAV accessions. Grey lemma color was controlled by one gene in CAV 4248 and by two genes in CAV 4656. Brown lemma color was controlled by one gene, which was closely linked or pleiotropic with the gene for lemma pubescence in CAV 4904. There was no association between crown rust resistance and the three floret characters studied.

INHERITANCE OF CROWN RUST RESISTANCE GENES IN AVENA STERILIS COLLECTIONS FROM ISRAEL, PORTUGAL, AND TUNISIA

1971 ◽  
Vol 13 (2) ◽  
pp. 251-255 ◽  
Author(s):  
G. Fleischmann ◽  
R. I. H. McKenzie ◽  
W. A. Shipton
Keyword(s):  
Resistance Genes ◽  
Rust Resistance ◽  
Dominant Gene ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Avena Sterilis ◽  
Wild Oats ◽  
Puccinia Coronata Avenae ◽  
Dominant Genes ◽  
Rust Resistance Genes

The inheritance of genes in three collections of Avena sterilis wild oats conferring resistance to races 216, 264, 295, 305, 326, 330, 332, and 446 of crown rust, Puccinia coronata avenae, was investigated. C. I. 8081 from Portugal contained a partially dominant gene, designated Pc47, which conferred resistance to all eight races. CW486 from Tunisia had a dominant gene, designated Pc50, which gave resistance to all races except 295, 326, and 446. F158 from Israel had two dominant genes; one, designated Pc48, conferred resistance to all the races but 305, while the second, designated Pc49, conferred resistance to races 216, 326, 330, 332, and 446. Genes Pc47, Pc48, Pc49, and Pc50 were inherited independently of each other and of those genes previously isolated from A. sterilis.

THE INHERITANCE OF RESISTANCE TO STEM AND CROWN RUST IN KYTO OATS

1968 ◽  
Vol 10 (4) ◽  
pp. 808-812 ◽  
Author(s):  
J. W. Martens ◽  
R. I. H. McKenzie ◽  
G. Fleischmann
Keyword(s):  
Stem Rust ◽  
Rust Resistance ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Stem Rust Resistance ◽  
Crown Rust ◽  
Inheritance Of Resistance ◽  
Seedling Resistance

The oat variety Kyto possesses a recessive gene, designated pg-12, which confers seedling resistance to all nine races of oat stem rust tested. This gene is inherited independently of the Pg-2, Pg-4 and pg-9 loci for seedling stem rust resistance. Kyto also possesses a dominant gene, Pc-44, for resistance to crown rust of oats. Gene Pc-44 is inherited independently of the Pg-2, Pg-4 and pg-12 loci but is associated with the pg-9 locus. Resistance conferred by genes pg-12 and Pc-44 is not expressed at constant temperatures of 25°C and above.

The effectiveness of resistance genes from wild oats, Avena sterilis, against oat crown rust, Puccinia coronata f. sp. avenue, in Canada in 1969

1970 ◽  
Vol 48 (12) ◽  
pp. 2117-2121
Author(s):  
George Fleischmann
Keyword(s):  
Middle East ◽  
Resistance Genes ◽  
Regional Differences ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Western Canada ◽  
Wild Oat ◽  
Avena Sterilis ◽  
Wild Oats ◽  
Oat Crown Rust

All isolates of oat crown rust, Puccinia coronata f. sp. avenae, identified in Canada in 1969 were inoculated onto 12 different lines containing resistance from wild oats, Avena sterilis, collected in Europe and the Middle East. Lines that contain resistance genes Pc-38 and Pc-39, and wild oat collections CI 8081 and F158, provide effective resistance to nearly every culture of crown rust. Regional differences in the level of virulence of crown rust cultures isolated from eastern and western Canada were observed on lines that contain A. sterilis resistance, with cultures of crown rust isolated from the east being generally less virulent than those from western Canada.

Resistance of genes isolated from Avena sterilis to isolates of oat crown rust prevalent in Canada in 1968

1969 ◽  
Vol 47 (4) ◽  
pp. 623-623
Author(s):  
George Fleischmann
Keyword(s):  
Crown Rust ◽  
The Other ◽  
Puccinia Coronata ◽  
Avena Sterilis ◽  
Oat Crown Rust

Lines of Pendek each containing a single Avena sterilis gene (Pc-38, Pc-39, Pc-40, Pc-41, and Pc-42) were tested to 116 isolates of Puccinia coronata var. avenae identified in Canada in 1968. None of the isolates attacked gene Pc-39 and only two isolates (races 290 and 326) attacked Pc-38. The other A. sterilis genes were not particularly effective against these crown rust isolates.

scholarly journals Hidden Diversity of Crown Rust Resistance within Genebank Resources of Avena sterilis L.

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 315
Author(s):  
Edyta Paczos-Grzęda ◽  
Maja Boczkowska ◽  
Sylwia Sowa ◽  
Aneta Koroluk ◽  
Joanna Toporowska
Keyword(s):  
Rust Resistance ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Sources Of Resistance ◽  
Avena Sterilis ◽  
Seedling Resistance ◽  
Susceptibility Data ◽  
Infection Pattern ◽  
Crown Rust Resistance ◽  
Rust Pathogen

The most widespread and damaging fungal disease of the oat plant is crown rust. Resistance to the crown rust pathogen, Puccinia coronata Cda. f. sp. avenae (Pca), at the seedling stage of Avena sterilis accessions from the Polish national genebank was characterised by five North American and Polish pathotypes of Pca of diverse pathogenicity. Pca pathogenicity was determined on a series of 34 differential lines carrying known seedling resistance genes. Seventy-five percent of studied accessions showed a heterogeneous infection pattern, 17% behaved as homogenous susceptibles, and 7% of tested genotypes could be unambiguously described as resistant. This study proved that A. sterilis accessions preserved in a genebank as complex populations could be a very valuable source of resistance to crown rust. The complexity of analysed populations was ascertained by a detailed variance analysis of transformed resistance/susceptibility data. We demonstrate here that hidden sources of resistance may be discovered in accessions with general susceptibility.

scholarly journals INHERITANCE OF REACTION TO SEVERAL RACES OF CROWN RUST, PUCCINIA CORONATA AVENAE ERIKSS., IN TWO CROSSES INVOLVING UKRAINE OATS

1960 ◽  
Vol 40 (2) ◽  
pp. 345-352 ◽  
Author(s):  
K. E. Sanderson
Keyword(s):  
North America ◽  
Dominant Gene ◽  
Field Resistance ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Single Dominant Gene ◽  
Puccinia Coronata Avenae ◽  
Plant Breeding Program ◽  
Almost All ◽  
Or Genes

The oat variety Ukraine is resistant to a large number of crown rust races, including race 263, a race which is pathogenic on almost all commercial oat varieties in North America. Random F3 lines from the crosses Fortune × Ukraine and Garry × Ukraine were tested for their reaction to races 213 and 263 of crown rust, and lines selected from these were tested for reactions to other races. The tests indicated that a single dominant gene in Ukraine governed resistance to races 213, 202, 202A, 209, 212A, 235, 236, 239, 239B, and 240, and that another dominant gene in Ukraine governed resistance to race 263. Tests with lines from one family of the Garry × Ukraine cross showed that the reactions of Garry to races 229, 235, and 240 are associated in inheritance, and tests with lines from a second family showed that the reactions to races 209, 236, and 239 are also associated in inheritance. The data also indicate that one or more genes in Garry govern resistance to these races, but whether or not the same gene or genes govern resistance to both groups of races was not determined. The Ukraine and Garry rust reactions were shown to be inherited independently of one another, with the gene for the higher type of resistance epistatic to the gene for the lower type in all cases.A number of F3 lines were isolated which combined the field resistance of Ukraine and Garry, respectively, to crown rust, including race 263, with the field resistance to stem rust of Garry. These lines may prove very useful in a plant breeding program.

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