Back to Search
Start Over
Characterization of Leaf Rust and Stripe Rust Resistance in Spring Wheat ‘Chilero’
- Source :
- Plant Disease. 102:421-427
- Publication Year :
- 2018
- Publisher :
- Scientific Societies, 2018.
-
Abstract
- 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.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Genotype
Basidiomycota
Quantitative Trait Loci
Chromosome Mapping
food and beverages
Stripe rust
Plant Science
Biology
Genes, Plant
01 natural sciences
03 medical and health sciences
030104 developmental biology
Agronomy
Mexico
Agronomy and Crop Science
Triticum
Disease Resistance
Plant Diseases
010606 plant biology & botany
Subjects
Details
- ISSN :
- 19437692 and 01912917
- Volume :
- 102
- Database :
- OpenAIRE
- Journal :
- Plant Disease
- Accession number :
- edsair.doi.dedup.....8b49f29d1fb397869833969392d0e174