GrainGenes Reference Report: CRS-50-2261
Reference
CRS-50-2261
Title
MlAB10: A Triticum turgidum subsp. dicoccoides derived powdery mildew resistance gene identified in common wheat.
Journal
Crop Science
Year
2010
Volume
50
Pages
2261-2267
Author
[ Hide all but 1 of 8 ] Maxwell JJ Lyerly JH Srnic G Parks R Cowger C Marshall D Brown-Guedira G Murphy JP
Abstract
Powdery mildew is an economically important disease in wheat (Triticum aestivum L.). NC97BGTAB10 contains powdery mildew resistance introgressed from wild emmer wheat (T. turgidum subsp. dicoccoides). The objectives of this research were to genetically characterize the powdery mildew resistance in NC97BGTAB10, identify SSR markers closely linked to the resistance gene, and provide evidence that the gene is novel. One hundred thirty nine F2:3 lines from the cross NC97BGTAB10/Saluda were evaluated in the field and greenhouse for reaction to powdery mildew. Resistance was controlled by a single gene. Bulked segregant analysis identified a polymorphism between the resistant and susceptible bulks on chromosome 2BL. The population was genotyped with SSR markers that were specific to chromosome 2B and a linkage map was developed. The SSR marker Xwmc445 mapped 7 cM proximal to the resistance gene and no marker could be mapped distal to the gene. It was concluded that the resistance gene lies in the distal tip of chromosome 2BL. The powdery mildew resistance genes Pm33 and MlZec1 have also been mapped to the region. A detached leaf test with two powdery mildew isolates indicated the resistance gene in NC97BGTAB10 was different from MlZec1. No allelism test could be conducted to determine the relationships between the resistance genes in NC97BGTAB10, Pm33 or MlZec1 at this time. Thus, the resistance gene in NC97BGTAB10 was given the temporary designation MlAB10.
External Databases
https://doi.org/10.2135/cropsci2010.04.0195 https://doi.org/10.2135/cropsci2010.04.0195
Gene
MlAB10
Germplasm
NC97BGTAB10 PI 604036 NCAB10
Locus
MlAB10
QTL
QPm.SalxNCAB10-2B QTL1618_2B-Maxwell_et_al._2010
Trait Study
Powdery mildew, NCAB10 x Saluda, Maxwell2010
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: CRS-50-2261
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||