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231225s2015 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-08-14-0865-RE
|2 doi
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|a pubmed24n0977.xml
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|a (NLM)30699539
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|c DE-627
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|a eng
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| 100 |
1 |
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|a Han, D J
|e verfasserin
|4 aut
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|a Emerging Yr26-Virulent Races of Puccinia striiformis f. tritici Are Threatening Wheat Production in the Sichuan Basin, China
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 20.04.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Stripe rust, caused by Puccinia striiformis f. tritici, is one of the most destructive diseases of wheat in the world. The Sichuan Basin is one of the most important regions of wheat production and stripe rust epidemics in China. Stripe rust resistance gene Yr26 (the same gene as Yr24) has been widely used in wheat breeding programs and in many cultivars grown in this region since the gene was discovered in the early 1990s. Virulence to Yr26 has increased in frequency since its first detection in 2008. The objective of this study was to assess the vulnerability of the wheat cultivars and breeding lines in the Sichuan Basin to Yr26-virulent races. In total, 85 wheat accessions were tested with Yr26-avirulent races CYR32, CYR33, and Su11-4 and two Yr26-virulent races, V26/CM42 and V26/Gui22. DNA markers for Yr26 were used to determine the presence and absence of Yr26 in the wheat accessions. Of the 85 wheat accessions, only 5 were resistant and 19 susceptible to all races tested, and the remaining 61 were resistant to at least one or more races tested in seedling stage. In all, 65 (76.5%) accessions were susceptible to the emerging Yr26-virulent race V26/Gui22. In field tests, susceptible accessions increased from 31.8% in a nursery inoculated with predominant and Yr26-avirulent races to 61.2% in the nursery inoculated with the predominant races mixed with V26/Gui22. Based on the results of the molecular marker and race tests, 33 (38.8%) accessions were determined to have Yr26, showing that the Yr26 virulence is a major threat to wheat production in the Sichuan Basin and potentially in other regions of China
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|a Journal Article
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|a Wang, Q L
|e verfasserin
|4 aut
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|a Chen, X M
|e verfasserin
|4 aut
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|a Zeng, Q D
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, J H
|e verfasserin
|4 aut
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| 700 |
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|a Xue, W B
|e verfasserin
|4 aut
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| 700 |
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|a Zhan, G M
|e verfasserin
|4 aut
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| 700 |
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|a Huang, L L
|e verfasserin
|4 aut
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| 700 |
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|a Kang, Z S
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 99(2015), 6 vom: 31. Juni, Seite 754-760
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|x 0191-2917
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| 773 |
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|g volume:99
|g year:2015
|g number:6
|g day:31
|g month:06
|g pages:754-760
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|u http://dx.doi.org/10.1094/PDIS-08-14-0865-RE
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