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GrainGenes Reference Report: TAG-134-3951

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Reference
TAG-134-3951
Title
Precise mapping of QTL for Hessian fly resistance in the hard winter wheat cultivar 'Overland'
Journal
Theoretical and Applied Genetics
Year
2021
Volume
134
Pages
3951-3962
Author
Xu Y
[ Show all 8 ]
Abstract
Key message. A major QTL for Hessian fly resistance was precisely mapped to a 2.32 Mb region on chromosome 3B of the US hard winter wheat cultivar ‘Overland’. Abstract. The Hessian fly (HF, Mayetiola destructor) is a destructive insect pest of wheat in the USA and worldwide. Deploying HF-resistant cultivars is the most effective and economical approach to control this insect pest. A population of 186 recombinant inbred lines (RILs) was developed from ‘Overland’ × ‘Overley’ and phenotyped for responses to HF attack using the HF biotype ‘Great Plains’. A high-density genetic linkage map was constructed using 1,576 single nucleotide polymorphism (SNP) markers generated by genotyping-by-sequencing (GBS). Two quantitative trait loci (QTLs) with a significant epistatic effect on HF resistance were mapped to chromosomes 3B (QHf.hwwg-3B) and 7A (QHf.hwwg-7A) in Overland, which are located in similar chromosome regions as found for H35 and H36 in the cultivar ‘SD06165’, respectively. QHf. hwwg-3B showed a much larger effect on HF resistance than QHf.hwwg-7A. Five and four GBS-SNPs, respectively, in the QHf.hwwg-3B and QHf.hwwg-7A QTL intervals were converted into Kompetitive allele specific polymerase chain reaction (KASP) markers. QHf.hwwg-3B was precisely mapped to a 2.32 Mb interval (2,479,314–4,799,538 bp) using near-isogenic lines (NILs) and RILs that have recombination within the QTL interval. The US winter wheat accessions carrying contrasting alleles at KASP markers KASP-3B4525164, KASP-7A47772047 and KASP-7A65090410 showed significant difference in HF resistance. The combination of the two KASP markers KASP-3B3797431 and KASP-3B4525164 is near-diagnostic for the detection of QHf.hwwg-3B in a US winter wheat panel and can be potentially used for screening the QTL in breeding programs.
External Databases
https://doi.org/10.1007/s00122-021-03940-w
Probe
[ Hide all but 1 of 12 ]
KASP-3B317159
KASP-3B322893
KASP-3B2101738
KASP-3B2479314
KASP-3B3797431
KASP-3B4525164
KASP-3B4799538
KASP-3B9360948
KASP-7A47772047
KASP-7A65090410
KASP-7A68911467
KASP-7A69907161

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