scholarly journals Genetic factors governing resistance and susceptibility of oats to Puccinia coronata avenae, Eriks & E Henn, race 57

1950 ◽  
Author(s):  
Verne Clifford Finkner
Keyword(s):  
Genetic Factors ◽  
Puccinia Coronata ◽  
Puccinia Coronata Avenae

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.

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

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