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GrainGenes Reference Report: MBR-30-1479

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Reference	MBR-30-1479
Title	QTL mapping of resistance to race Ug99 of Puccinia graminis f. sp. tritici in durum wheat (Triticum durum Desf.).
Journal	Molecular Breeding
Year	2012
Volume	30
Pages	1479-1493
Author	Haile JK Nachit MM Hammer K Badebo A Roder MS
Abstract	Stem rust caused by Puccinia graminis f. sp. tritici was historically one of the most destructive diseases of wheat worldwide. The evolution and rapid migration of race TTKSK (Ug99) and derivatives, first detected in Uganda in 1999, are of international concern due to the virulence of these races to widely used stem rust resistance genes. In attempts to identify quantitative trait loci (QTL) linked with resistance to stem rust race Ug99, 95 recombinant inbred lines that were developed from a cross between two durum wheat varieties, Kristal and Sebatel, were evaluated for reaction to stem rust. Seven field trials at two locations were carried out in main and off seasons. In addition to the natural infection, the nursery was also artificially inoculated with urediniospores of stem rust race Ug99 and a mixture of locally collected stem rust urediniospores. A genetic map was constructed based on 207 simple sequence repeat (SSR) and two sequence tagged site loci. Using composite interval mapping, nine QTL for resistance to stem rust were identified on chromosomes 1AL, 2AS, 3BS, 4BL, 5BL, 6AL 7A, 7AL and 7BL. These results suggest that durum wheat resistance to stem rust is oligogenic and that there is potential to identify previously uncharacterized resistance genes with minor effects. The SSR markers that are closely linked to the QTL can be used for marker-assisted selection for stem rust resistance in durum wheat.
External Databases	https://doi:10.1007/s11032-012-9734-7)
QTL	[ Hide all but 1 of 9 ] QTL1437_7A-Haile_et_al._2012b QTL1432_3B-Haile_et_al._2012b QTL1438_7B-Haile_et_al._2012b QTL1430_1A-Haile_et_al._2012b QTL1431_2A-Haile_et_al._2012b QTL1436_7A-Haile_et_al._2012b QTL1434_5B-Haile_et_al._2012b QTL1435_6A-Haile_et_al._2012b QTL1433_4B-Haile_et_al._2012b

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