Abstract
Stripe (yellow) rust caused by Puccinia striiformis f. sp. tritici is the most devastating disease of bread wheat (Triticum aestivum) in the cool winter areas. This rust disease represents a constant threat to wheat production in several countries in Central and Western Asia. A wide range of virulent yellow rust pathotypes is evolving in this region causing the breakdown of widely utilised sources of resistance in wheat. Hence, the knowledge of effective resistance genes in the region will enable breeders to target those useful genes in their breeding programmes. From 2006 to 2012, in order to determine of effective resistance genes in Ardabil, north-west of Iran, virulence patterns of wheat yellow rust were studied under the field conditions by planting of differential sets and isogenic lines. The results showed that yellow rust resistance genes Yr1,Yr2+ , Yr3V, Yr3a, Yr4a, Yr4, Yr5, Yr7+ , Yr10, Yr15,Yr16, YrCV, YrSD and YrND were effective and race-nonspecific resistance genes YrA3, YrA4, Yr18 and Yr29 were partially effective during study periods. Genes Yr2, Yr6, Yr7, Yr9, Yr17, Yr20, Yr21,Yr22, Yr23, Yr24, Yr25, Yr26, Yr27, YrSU, YrSP and YrA were found ineffective. The Genes found effective against yellow rust under natural conditions may be deployed singly or in combinations with durable resistance genes to develop high yielding resistant wheat cultivars in wheat-growing areas in where yellow rust races have the same virulence profile to the prevalent race/s of Ardabil.
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Claims 4
Claim · model-written summary
The listed Yr genes were effective against yellow rust during monitoring.
- Taxon
- bread wheat
Triticum aestivume1 - Interactor
- Puccinia striiformis f. sp. tritici
Puccinia striiformis f. sp. triticie2pathogen - Gene
- Yr1,Yr2+ , Yr3V, Yr3a, Yr4a, Yr4, Yr5, Yr7+ , Yr10, Yr15,Yr16, YrCV, YrSD and YrNDe0
- Outcome
- yellow rust resistancee0
- Direction
- effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yellow rust resistance genes Yr1,Yr2+ , Yr3V, Yr3a, Yr4a, Yr4, Yr5, Yr7+ , Yr10, Yr15,Yr16, YrCV, YrSD and YrND were effective”
e1“bread wheat (Triticum aestivum)”
e2“Puccinia striiformis f. sp. tritici”
Claim · model-written summary
Race nonspecific Yr genes were partially effective.
- Taxon
- bread wheatTriticum aestivume1
- Interactor
- Puccinia striiformis f. sp. triticiPuccinia striiformis f. sp. triticie2pathogen
- Gene
- YrA3, YrA4, Yr18 and Yr29e0
- Outcome
- resistancee0
- Direction
- partially effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“race-nonspecific resistance genes YrA3, YrA4, Yr18 and Yr29 were partially effective”
e1“bread wheat (Triticum aestivum)”
e2“Puccinia striiformis f. sp. tritici”
Claim · model-written summary
The listed Yr genes were ineffective against yellow rust.
- Taxon
- bread wheatTriticum aestivume1
- Interactor
- Puccinia striiformis f. sp. triticiPuccinia striiformis f. sp. triticie2pathogen
- Gene
- Yr2, Yr6, Yr7, Yr9, Yr17, Yr20, Yr21,Yr22, Yr23, Yr24, Yr25, Yr26, Yr27, YrSU, YrSP and YrAe0
- Outcome
- ineffectivee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genes Yr2, Yr6, Yr7, Yr9, Yr17, Yr20, Yr21,Yr22, Yr23, Yr24, Yr25, Yr26, Yr27, YrSU, YrSP and YrA were found ineffective”
e1“bread wheat (Triticum aestivum)”
e2“Puccinia striiformis f. sp. tritici”
Claim · model-written summary
The authors suggest deploying effective genes singly or with durable resistance genes where rust virulence matches Ardabil.
- Taxon
- bread wheatTriticum aestivume1
- Outcome
- deployed singly or in combinations with durable resistance genese0
- Qualifier
- same virulence profile to the prevalent race/s of Ardabile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genes found effective against yellow rust under natural conditions may be deployed singly or in combinations with durable resistance genes to develop high yielding resistant wheat cultivars in wheat-growing areas in where yellow rust races have the same virulence profile to the prevalent race/s of Ardabil”
e1“bread wheat (Triticum aestivum)”