Population studies of causative agent of wheat yellow rust in the Northwest Russia
Wheat yellow rust (causative agent Puccinia striiformis West.) is a widespread disease of common wheat in the North-West Russia. A comparative analysis of P. striiformis populations, collected in the Leningrad region in 2019 on wheat and triticale, by virulence and racial composition was carried out...
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Published in | BIO Web of Conferences Vol. 23; p. 1006 |
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Main Authors | , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
Les Ulis
EDP Sciences
2020
|
Subjects | |
Online Access | Get full text |
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Summary: | Wheat yellow rust (causative agent
Puccinia striiformis
West.) is a widespread disease of common wheat in the North-West Russia. A comparative analysis of
P. striiformis
populations, collected in the Leningrad region in 2019 on wheat and triticale, by virulence and racial composition was carried out for the first time. Virulence and racial composition of
P. striiformis
were studied using international and European sets of differentiating varieties and isogenic lines of “Avocet” with 20
Yr
genes. A total of 55 single-pustule isolates of
P. striiformis
were studied, including 31 from common wheat, 10 from durum wheat and 14 from triticale. Using differentiating varieties, 2 races (111E247, 110E247) were identified among isolates from common wheat, 3 races from durum wheat (111E213, 111E231, 111E247), and 5 races from triticale (111E247, 78E209, 79E209, 111E231, 78E215). Using “Avocet” isogenic
Yr
lines, all isolates were avirulent to lines with the
Yr5, Yr10, Yr11, Yr12, Yr15, Yr24, Yr26
genes and virulent to
Yr6, Yr7, Yr8, Yr9, Yr18, YrSp, YrJr(18), YrAS
genes. Isolates virulent to
Yr17
were revealed on triticale; avirulent to
YrSk (27)
– on durum wheat. and avirulent to
YrAR
– on triticale. Highly effective
Yr
genes can be recommended for wheat resistance breeding to to yellow rust. |
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ISSN: | 2117-4458 2273-1709 2117-4458 |
DOI: | 10.1051/bioconf/20202301006 |