GrainGenes Reference Report: TAG-99-554
Reference
TAG-99-554
Title
Development of a molecular marker for the adult plant leaf rust resistance gene Lr35 in wheat.
Journal
Theoretical and Applied Genetics
Year
1999
Volume
99
Pages
554-560
Author
Seyfarth R Feuillet C Schachermayr G Winzeler M Keller B
Abstract
Summary: The objective of this work was to develop a marker for the adult plant leaf rust resistance gene Lr35. The Lr35 gene was originally introgressed into chromosome 2B from Triticum speltoides, a diploid relative of wheat. A segregating population of 96 F(2) plants derived from a cross between the resistant line ThatcherLr35 and the susceptible variety Frisal was analysed. Out of 80 RFLP probes previously mapped on wheat chromosome 2B, 51 detected a polymorphism between the parents of the cross. Three of them were completely linked with the resistance gene Lr35. The co-segregating probe BCD260 was converted into a PCR-based sequence-tagged-site (STS) marker. A set of 48 different breeding lines derived from several European breeding programs was tested with the STS marker. None of these lines has a donor for Lr35 in its pedigree and all of them reacted negatively with the STS marker. As no leaf rust races virulent on Lr35 have been found in different areas of the world, the STS marker for the Lr35 resistance gene is of great value to support the introgression of this gene in combination with other leaf rust (Lr) genes into breeding material by marker-assisted selection
External Databases
http://link.springer.de/link/service/journals/00122/bibs/9099003/90990554.htm
Keyword
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: TAG-99-554
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||