Mapping quantitative and qualitative disease resistance genes in a doubled haploid population of barley (Hordeum vulgare)

Toojinda, T.; Broers, L.H.M.; Chen, X. M.; Hayes, Patrick; Kleinhofs, A.; Korte, Jennifer A.; Kudrna, David; Leung, Hei; Line, R. F.; Powell, W.; Ramsay, Luke; Vivar, H.; Waugh, Robbie

doi:10.1007/s001220051519

Cited by 113 publications

(84 citation statements)

References 21 publications

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“…QTLs on chromosome 1 and 2 coincided with QTLs reported by Toojinda et al (2000) and Scheurer et al (2001). The other three QTLs have not been reported before, including the QTL that was highly associated with one allele of HVM054 (Table 7).…”

supporting

confidence: 73%

“…The indicated chromosome regions seem to coincide with one QTL that had been reported by Toojinda et al (2000) and two QTLs reported by Scheurer et al (2001). Remarkably, the commonly used major gene Ryd2 for BYD resistance, located on the long arm of chromosome 3 (Collins et al 1996), was not found with LD mapping, although it cannot be ruled out that one or more of the unmapped markers is linked to Ryd2.…”

Section: Rphq3 Andmentioning

confidence: 80%

“…There was high correlation, but just below the level taken as threshold for significance, for markers on chromosome 3 at 154 cM (r = 0.24, p = 0.0057), on chromosome 4 at 86 cM (r = À 0.25, p = 0.0036), and on chromosome 5 at 98 cM (r = À 0.24, p = 0.0039). In all those chromosome regions Toojinda et al (2000) found QTLs for BYD. In addition, BYD score correlated significantly with rachilla hair length (Table 2), which mapped on chromosome 7 (see below).…”

mentioning

confidence: 97%

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Linkage Disequilibrium Mapping of Morphological, Resistance, and Other Agronomically Relevant Traits in Modern Spring Barley Cultivars

et al. 2006

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A set of 148 modern spring barley cultivars was explored for the extent of linkage disequilibrium (LD) between genes governing traits and nearby marker alleles. Associations of agronomically relevant traits (days to heading, plant height), resistance traits (leaf rust, barley yellow dwarf virus (BYD)), and morphological traits (rachilla hair length, lodicule size) with AFLP markers and SSR markers were found. Known major genes and QTLs were confirmed, but also new putative QTLs were found. The LD mapping clearly indicated the common occurrence of Rph3, a gene for hypersensitivity resistance against Puccinia hordei, and also confirmed the QTL Rphq2 for prolonging latency period of P. hordei in seedlings. We also found strong indication for a hitherto not reported gene for resistance or tolerance to BYD on chromosome 2, linked to SSR marker HVM054. Our conclusion is that LD mapping is a valuable additional tool in the search for applicable marker associations with major genes and QTLs.

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supporting

confidence: 73%

Section: Rphq3 Andmentioning

confidence: 80%

mentioning

confidence: 97%

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Linkage Disequilibrium Mapping of Morphological, Resistance, and Other Agronomically Relevant Traits in Modern Spring Barley Cultivars

et al. 2006

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“…In addition to these loci, QTLs for tolerance have been mapped on chromosome 2HL (Scheurer et al 2001) and on other chromosomes (Toojinda et al 2000). Ryd2 has been used in breeding for BYDV tolerant barley cultivars, e.g.…”

Section: Introductionmentioning

confidence: 99%

Pyramiding of Ryd2 and Ryd3 conferring tolerance to a German isolate of Barley yellow dwarf virus-PAV (BYDV-PAV-ASL-1) leads to quantitative resistance against this isolate

et al. 2011

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Barley yellow dwarf virus (BYDV) is an economically important pathogen of barley, which may become even more important due to global warming. In barley, several loci conferring tolerance to BYDV-PAV-ASL-1 are known, e.g. Ryd2, Ryd3 and a quantitative trait locus (QTL) on chromosome 2H. The aim of the present study was to get information whether the level of tolerance against this isolate of BYDV in barley can be improved by combining these loci. Therefore, a winter and a spring barley population of doubled haploid (DH) lines were genotyped by molecular markers for the presence of the susceptibility or the resistance encoding allele at respective loci (Ryd2, Ryd3, QTL on chromosome 2H) and were tested for their level of BYDV-tolerance after inoculation with viruliferous (BYDV-PAV-ASL-1) aphids in Weld trials. In DH-lines carrying the combination Ryd2 and Ryd3, a signiWcant reduction of the virus titre was detected as compared to lines carrying only one of these genes. Furthermore, spring barley DH-lines with this allele combination also showed a signiWcantly higher relative grain yield as compared to lines carrying only Ryd2 or Ryd3. The QTL on chromosome 2H had only a small eVect on the level of tolerance in those lines carrying only Ryd2, or Ryd3 or a combination of both, but the eVect in comparison to lines carrying no tolerance allele was signiWcant. Overall, these results show that the combination of Ryd2 and Ryd3 leads to quantitative resistance against BYDV-PAV instead of tolerance.

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“…QTLs for adult plant resistance to uncharacterised field isolates of Psh were located on chromosomes 1H, 5H, and 7H (Thomas et al 1995). Significant QTLs for resistance to stripe rust have also been reported on chromosomes 1H, 2H, 3H, 4H, 5H, and 6H (Toojinda et al 1998(Toojinda et al , 2000.…”

Section: Introductionmentioning

confidence: 91%

Molecular mapping as a tool for pre-emptive breeding for resistance to the exotic barley pathogen, Puccinia striiformis f. sp. hordei

Çakır¹,

Spackman²,

Wellings³

et al. 2003

Aust. J. Agric. Res.

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Abstract. Barley stripe rust (BSR), caused by Puccinia striiformis f. sp. hordei, has been a major disease problem to the barley industry worldwide that has not, to date, been detected in Australia. This paper describes the mapping of stripe rust resistance genes in Tallon/Kaputar (TK) and Arapiles/Franklin (AF) populations. The paper also reports on the usefulness of markers associated with alternative sources of resistance previously identified in the varieties Orca and Shyri in the USA. Stripe rust screening was conducted at the adult plant stage in Toluca, Mexico, for 2 years. Two major quantitative trait loci (QTLs) were found on chromosomes 2H and 5H in both populations. One region on chromosome 5H was highly significantly associated with resistance to stripe rust (R 2 = 68% and 34% in TK and AF, respectively). The QTL on chromosome 2H accounted for 36% of the variation in TK and 10% of the variation in the AF population. These associations were consistent over both years. Further work will involve screening for additional markers in the target regions to identify polymorphism that can be used to select for multiple resistances in the absence of the pathogen.A R 0 2 2 3 1 M a p p i n g g e n e s f o r s t r i p e r e s i s t a n c e i n b a r l e y M . C a k i r e t a l .

show abstract

Mapping quantitative and qualitative disease resistance genes in a doubled haploid population of barley (Hordeum vulgare)

Cited by 113 publications

References 21 publications

Linkage Disequilibrium Mapping of Morphological, Resistance, and Other Agronomically Relevant Traits in Modern Spring Barley Cultivars

Linkage Disequilibrium Mapping of Morphological, Resistance, and Other Agronomically Relevant Traits in Modern Spring Barley Cultivars

Pyramiding of Ryd2 and Ryd3 conferring tolerance to a German isolate of Barley yellow dwarf virus-PAV (BYDV-PAV-ASL-1) leads to quantitative resistance against this isolate

Molecular mapping as a tool for pre-emptive breeding for resistance to the exotic barley pathogen, Puccinia striiformis f. sp. hordei

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