GrainGenes Reference Report: MBR-33-51
Reference
MBR-33-51
Title
Mapping of durable stripe rust resistance in a durum wheat cultivar Wollaroi
Journal
Molecular Breeding
Year
2014
Volume
33
Pages
51-59
Author
Bansal UK Kazi AG Singh B Hare RA Bariana HS
Abstract
Wollaroi, an Australian durum wheat cultivar, produced a low stripe rust response and the alternative parent Bansi was highly susceptible. The Wollaroi/Bansi recombinant inbred line (RIL) population was phenotyped across three consecutive crop seasons. A genetic map of the Wollaroi/Bansi RIL population comprising 799 markers (diversity arrays technology and simple sequence repeat markers) was used to determine the genomic location of stripe rust resistance genes carried by the cultivar Wollaroi. Composite interval mapping detected three consistent quantitative trait loci (QTL) in chromosomes 2A, 3B and 5B. These QTL were named QYr.sun-2A, QYr.sun-3B and QYr.sun-5B. Another QTL, QYr.sun-1B, was detected only in the 2009 crop season. QTL in chromosomes 1B, 2A, 3B and 5B explained on average 6, 9.3, 26.7 and 8.7 %, respectively, of the variation in stripe rust response. All QTL were contributed by Wollaroi. RILs carrying these QTL singly produced intermediate stripe rust severities ranging from 46.2 to 55.7 %, whereas RILs with all four QTL produced the lowest disease severity (34.3 %). The consistently low stripe rust response of Wollaroi for 20 years demonstrated the durability of the resistance loci involved. The QTL combination detected in this study is being transferred to common wheat.
External Databases
https://doi.org/10.1007/s11032-013-9933-x
QTL
QYr.sun-1B_Wollaroi QYr.sun-2A_Wollaroi QYr.sun-3B_Wollaroi QYr.sun-5B_Wollaroi qNV.Yr-2A.2
Keyword
Adult plant resistance Durable resistance Durum wheat QTL Stripe rust
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: MBR-33-51
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
| ||||||
|
|
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||