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Quantitative trait loci controlling barley powdery mildew and scald resistances in two different barley doubled haploid populations
Citation
Li, HB and Zhou, MX, Quantitative trait loci controlling barley powdery mildew and scald resistances in two different barley doubled haploid populations, Molecular Breeding: New Strategies in Plant Improvement, 27, (4) pp. 479-490. ISSN 1380-3743 (2011) [Refereed Article]
Copyright Statement
The final publication is available at http://www.springerlink.com
Official URL: http://www.springerlink.com
DOI: doi:10.1007/s11032-010-9445-x
Abstract
Abstract Powdery mildew and scald can cause
significant yield loss in barley. In order to identify
new resistance genes for powdery mildew and scald
in barley, two barley doubled haploid (DH) populations
were screened for adult plant resistance in
the field and glasshouse under natural infection. The
mapping populations included 92 DH lines from the
cross of TX9425 9 Franklin and 177 DH lines from
the cross of Yerong 9 Franklin. Two quantitative
trait loci (QTL) for resistance to powdery mildew
were identified in the TX9425 9 Franklin population.
These QTL were mapped to chromosomes 7H
and 5H, respectively. The phenotypic variation
explained by the two QTL detected in this population
was 22 and 17%, respectively. Three significant QTL
were identified from the Yerong 9 Franklin population
for the resistance to powdery mildew; the major
one, detected on the short arm of chromosome 1H,
explained 66% of phenotypic variation. The major
QTL for scald resistance, identified from two different
populations which shared a common parent,
Franklin, were mapped in the similar position on 3H.
However, the Franklin allele provided resistance to
one population but susceptibility to the other population.
The Yerong allele on 3H showed much better
resistance to scald than the Franklin allele, which has
not been reported before. Using high-density maps
for both populations, some markers which were very
close to the resistance genes were identified. Transgression
beyond the parents in disease resistances of
the DH populations indicates that both small-effect
QTLs and genetic background may also have significant
contributions towards the resistance.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Barley – QTL – Powdery mildew – Scald |
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Crop and pasture production |
| Research Field: | Crop and pasture improvement (incl. selection and breeding) |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Grains and seeds |
| Objective Field: | Barley |
| UTAS Author: | Li, HB (Dr Haobing Li) |
| UTAS Author: | Zhou, MX (Professor Meixue Zhou) |
| ID Code: | 64236 |
| Year Published: | 2011 |
| Web of Science® Times Cited: | 18 |
| Deposited By: | Agricultural Science |
| Deposited On: | 2010-07-08 |
| Last Modified: | 2017-11-06 |
| Downloads: | 0 |
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