A gene involved in the resistance of wheat to wheatgrass powdery mildew fungus

Genome ◽  
1987 ◽  
Vol 29 (6) ◽  
pp. 850-852 ◽  
Author(s):  
Y. Tosa ◽  
H. Tsujimoto ◽  
H. Ogura
Keyword(s):  
Powdery Mildew ◽  
Key Words ◽  
Common Wheat ◽  
Erysiphe Graminis ◽  
Wheat Cultivars ◽  
Powdery Mildew Fungus ◽  
Key Words Wheat ◽  
Hybrid Culture ◽  
The Common

A gene for resistance to Erysiphe graminis was detected in the common wheat cultivars 'Norin 4', 'Norin 26', 'Norin 29', 'Shin-chunaga', and 'Penjamo 62', using a hybrid culture derived from E. graminis f.sp. agropyri × E. graminis f.sp. tritici. The gene was located on chromosome 1D and designated Pm10. Pm10 was considered to be involved in the resistance of wheat to the wheatgrass powdery mildew fungus. Key words: wheat, resistance, powdery mildew, Erysiphe graminis.

Identification of a gene for resistance to wheatgrass powdery mildew fungus in the common wheat cultivar Chinese Spring

Genome ◽  
1988 ◽  
Vol 30 (4) ◽  
pp. 612-614 ◽  
Author(s):  
Y. Tosa ◽  
H. Tokunaga ◽  
H. Ogura
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Common Wheat ◽  
Chinese Spring ◽  
Wheat Cultivar ◽  
Erysiphe Graminis ◽  
Common Wheat Cultivar ◽  
Powdery Mildew Fungus ◽  
Hybrid Culture ◽  
The Common

A gene for resistance to Erysiphe graminis was detected in Triticum aestivum cv. Chinese Spring, strain Salmon, T. compactum cv. No. 44, and T. spelta var. duhamelianum, using a hybrid culture derived from E. graminis f. sp. agropyri × E. graminis f. sp. tritici. The gene was located on the short arm of chromosome 6B and designated Pm11. Pm11 was considered to be involved in the resistance of wheat to the wheatgrass powdery mildew fungus.Key words: wheat, resistance, powdery mildew, Erysiphe graminis.

Genetic analysis of the avirulence of wheatgrass powdery mildew fungus on common wheat

Genome ◽  
1989 ◽  
Vol 32 (5) ◽  
pp. 913-917 ◽  
Author(s):  
Y. Tosa
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Genetic Analysis ◽  
Common Wheat ◽  
Erysiphe Graminis ◽  
Wheat Cultivars ◽  
Avirulence Genes ◽  
Powdery Mildew Fungus ◽  
Major Genes ◽  
Formae Speciales

F1 hybrid cultures between Erysiphe graminis f.sp. agropyri (wheatgrass mildew fungus) and E. graminis f.sp. tritici (wheat mildew fungus) were produced by using a common host of the two formae spéciales. When three common wheat cultivars, Triticum aestivum cv. Norin 4, T. aestivum cv. Norin 10, and T. compactum cv. No. 44, were inoculated with a population of F1 cultures, avirulent and virulent cultures segregated in a 3:1 ratio. This indicated that two major genes are involved in the avirulence of E. graminis f.sp. agropyri, Ak-1, on each of the three cultivars. Further analyses revealed that the three pairs of avirulence genes have one gene in common. On T. aestivum cv. Shin-chunaga, T. aestivum cv. Norin 26, and a strain of T. macha, the F1 population segregated in the same pattern as on T. aestivum cv. Norin 4, indicating that the same pair of avirulence genes is operating on these four cultivars. On T. aestivum cv. Red Egyptian the distribution of F1 phenotypes was continuous, suggesting that no major genes are involved in the avirulence of Ak-1 on this cultivar.Key words: powdery mildew, Erysiphe graminis, avirulence, wheat, wheatgrass.

Operation of resistance genes in wheat to Erysiphe graminis f.sp. tritici against E. graminis f.sp. agropyri

Genome ◽  
1990 ◽  
Vol 33 (2) ◽  
pp. 231-234 ◽  
Author(s):  
Y. Tosa ◽  
S. Tada
Keyword(s):  
Powdery Mildew ◽  
Common Wheat ◽  
Resistance Genes ◽  
Wheat Cultivar ◽  
Erysiphe Graminis ◽  
Near Isogenic Lines ◽  
Avirulence Genes ◽  
Common Wheat Cultivar ◽  
Isogenic Lines ◽  
The Common

The common wheat cultivar 'Chancellor' and its near-isogenic lines carrying resistance genes to Erysiphe graminis f.sp. tritici were inoculated with 240 F1 cultures derived from a cross between E. graminis f.sp. agropyri, Ak-1, and E. graminis f.sp. tritici, Tk-1. Segregation patterns of avirulent and virulent cultures suggested that the F1 population carries avirulence genes corresponding to Pm1, Pm2, Pm3a, and Pm3b. These avirulence genes were considered to be derived from Ak-1. It was therefore concluded that Pm1, Pm2, Pm3a, and Pm3b, resistance genes to E. graminis f.sp. tritici, operate against E. graminis f.sp. agropyri.Key words: powdery mildew, Erysiphe graminis, resistance, wheat, wheatgrass.

Heat-induced resistance in barley to the powdery mildew fungus Erysiphe graminis f.sp. hordei

1995 ◽  
Vol 47 (1) ◽  
pp. 51-66 ◽  
Author(s):  
Patrick Schweizer ◽  
Laurence Vallélian-Bindschedler ◽  
Egon Mösinger
Keyword(s):  
Powdery Mildew ◽  
Induced Resistance ◽  
Erysiphe Graminis ◽  
Powdery Mildew Fungus

AC Stephen barley

1993 ◽  
Vol 73 (4) ◽  
pp. 1079-1081
Author(s):  
K. M. Ho ◽  
W. L. Seaman ◽  
T. M. Choo ◽  
R. A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Powdery Mildew ◽  
Key Words ◽  
Erysiphe Graminis ◽  
Test Weight ◽  
High Yield ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Good Test ◽  
Barley Breeding

AC Stephen is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture Canada, and is adapted to Eastern Canada. It was selected from an OAC Kippen/Léger cross. AC Stephen has high yield, good test weight and is resistant to powdery mildew (Erysiphe graminis DC. ex Merat. f. sp. hordei Em. Marchal). Key words: Hordeum vulgare L., six-rowed barley, feed barley, high yield, powdery mildew

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