Characterization of Leaf Rust and Stripe Rust Resistance in Spring Wheat 'Chilero'

Since 1984, the 'Chilero' spring wheat line developed by CIMMYT has proven to be highly resistant to leaf rust and stripe rust. Amid efforts to understand the basis of resistance of this line, a recombinant inbred line (RIL) population derived from a cross between Avocet and Chilero was st...

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Veröffentlicht in:Plant disease. - 1997. - 102(2018), 2 vom: 07. Feb., Seite 421-427
1. Verfasser: Ponce-Molina, L J (VerfasserIn)
Weitere Verfasser: Huerta-Espino, J, Singh, R P, Basnet, B R, Alvarado, G, Randhawa, M S, Lan, C X, Aguilar-Rincón, V H, Lobato-Ortiz, R, García-Zavala, J J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a Since 1984, the 'Chilero' spring wheat line developed by CIMMYT has proven to be highly resistant to leaf rust and stripe rust. Amid efforts to understand the basis of resistance of this line, a recombinant inbred line (RIL) population derived from a cross between Avocet and Chilero was studied. The parents and RILs were characterized in field trials for leaf rust and stripe rust in three locations in Mexico between 2012 and 2015 and genotyped with DArT-array, DArT-GBS, and SSR markers. A total of 6,168 polymorphic markers were used to construct genetic linkage maps. Inclusive composite interval mapping detected four colocated resistance loci to both rust diseases and two stripe rust resistant loci in the Avocet × Chilero population. Among these, the quantitative trait locus (QTL) on chromosome 1BL was identified as a pleotropic adult plant resistance gene Lr46/Yr29, whereas QLr.cim-5DS/QYr.cim-5DS was a newly discovered colocated resistance locus to both rust diseases in Chilero. Additionally, one new stripe rust resistance locus on chromosome 7BL was mapped in the current population. Avocet also contributed two minor colocated resistance QTLs situated on chromosomes 1DL and 4BS. The flanking SNP markers can be converted to breeder friendly Kompetitive Allele Specific PCR (KASP) markers for wheat breeding programs 
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650 4 |a Research Support, Non-U.S. Gov't 
700 1 |a Huerta-Espino, J  |e verfasserin  |4 aut 
700 1 |a Singh, R P  |e verfasserin  |4 aut 
700 1 |a Basnet, B R  |e verfasserin  |4 aut 
700 1 |a Alvarado, G  |e verfasserin  |4 aut 
700 1 |a Randhawa, M S  |e verfasserin  |4 aut 
700 1 |a Lan, C X  |e verfasserin  |4 aut 
700 1 |a Aguilar-Rincón, V H  |e verfasserin  |4 aut 
700 1 |a Lobato-Ortiz, R  |e verfasserin  |4 aut 
700 1 |a García-Zavala, J J  |e verfasserin  |4 aut 
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773 1 8 |g volume:102  |g year:2018  |g number:2  |g day:07  |g month:02  |g pages:421-427 
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