Bivariate analysis of barley scald resistance with relative maturity reveals a new major QTL on chromosome 3H

Zhang, Xuechen; Ovenden, Ben; Orchard, Beverley; Zhou, Meixue; Park, Robert; Singh, Davinder; Milgate, Andrew

doi:10.1101/748368

Cited by 2 publications

(3 citation statements)

References 48 publications

(67 reference statements)

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“…The sequences of markers associated with the identified QTLs for scald resistance were used to perform BLAST searches by using the IPK Barley BLAST Server (http://webbl ast.ipk-gater sleben.de/barley). The barley pseudomolecules Morex v. 2.0 2019 were used for the BLASTn search (Zhang et al, 2019;Leng et al, 2020). Default settings were used to do the BLASTn search and the best hit was used to decide the physical position of the detected QTL (Table 1 and Figure 2).…”

Section: Ma Jor G Ene S and Lo CI Identified For Sc Ald Re S Is Tan Ce In Barle Ymentioning

confidence: 99%

“…Looseley et al (2012) detected QTLs based on the amount of R. commune in symptomless leaves, with results showing that the amount of R. commune in symptomless leaves is correlated with visual disease symptoms. Zhang et al (2019) reported that a phenotype derived from the regression of disease on relative maturity is an effective trait to detect scald resistance under natural field conditions when relative maturity is correlated with scald resistance, as it reduces the possiblity of confusing maturityrelated loci with true resistance loci.…”

Section: Ma Jor G Ene S and Lo CI Identified For Sc Ald Re S Is Tan Ce In Barle Ymentioning

confidence: 99%

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Recent insights into barley and Rhynchosporium commune interactions

Zhang

Ovenden

Milgate

2020

Molecular Plant Pathology

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Rhynchosporium commune is the causal pathogen of scald in barley ( Hordeum vulgare ), a foliar disease that can reduce yield by up to 40% in susceptible cultivars. R. commune is found worldwide in all temperate growing regions and is regarded as one of the most economically important barley pathogens. It is a polycyclic pathogen with the ability to rapidly evolve new virulent strains in response to resistance genes deployed in commercial cultivars. Hence, introgression and pyramiding of different loci for resistance (qualitative or quantitative) through marker‐assisted selection is an effective way to improve scald resistance in barley. This review summarizes all 148 resistance quantitative trait loci reported at the date of submission of this review and projects them onto the barley physical map, where it is clear many loci co‐locate on chromosomes 3H and 7H. We have summarized the major named resistance loci and reiterated the renaming of Rrs15 (CI8288) to Rrs17 . This review provides a comprehensive resource for future discovery and breeding efforts of qualitative and quantitative scald resistance loci.

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Section: Ma Jor G Ene S and Lo CI Identified For Sc Ald Re S Is Tan Ce In Barle Ymentioning

confidence: 99%

Section: Ma Jor G Ene S and Lo CI Identified For Sc Ald Re S Is Tan Ce In Barle Ymentioning

confidence: 99%

Recent insights into barley and Rhynchosporium commune interactions

Zhang

Ovenden

Milgate

2020

Molecular Plant Pathology

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“…The linear relationships between each of the four traits was determined from the trait: genotype covariance modelling using methods detailed in Zhang et al (2019) as follows:…”

Section: Phenotypic Data Analysismentioning

confidence: 99%

Improved breeding forFusarium pseudograminarium(Fusarium crown rot) using qPCR measurement of infection in multi-species winter cereal experiments

Milgate¹,

Baxter²,

Simpfendorfer

et al. 2022

Preprint

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Fusarium crown rot (FCR) causes significant grain yield loss in winter cereals around the world. Breeding for resistance and/or tolerance to FCR has been slow with relatively limited success. In this study, multi-species experiments were used to demonstrate an improved method to quantify FCR infection levels at plant maturity using qPCR, as well as the genotype yield retention using residual regression deviation. Using qPCR to measure FCR infection allowed a higher degree of resolution between genotypes than traditional visual stem basal browning assessments. The results were consistent across three environments with different levels of disease expression. The improved measure of FCR infection along with genotype yield retention allows for partitioning of both tolerance and partial resistance. Together these methods offer new insights to FCR partial resistance and its relative importance to tolerance in bread wheat and barley. This new approach offers a more robust, cost-effective way to select for both FCR traits within breeding programs.

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Bivariate analysis of barley scald resistance with relative maturity reveals a new major QTL on chromosome 3H

Abstract: 1 6

Cited by 2 publications

References 48 publications

Recent insights into barley and Rhynchosporium commune interactions

Recent insights into barley and Rhynchosporium commune interactions

Improved breeding forFusarium pseudograminarium(Fusarium crown rot) using qPCR measurement of infection in multi-species winter cereal experiments

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