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Mapping of the oat crown rust resistance gene Pc91
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Journal Article
Mapping of the oat crown rust resistance gene Pc91
2011
Overview
Crown rust is an important disease of oat caused by
Puccinia coronata
Corda f. sp.
avenae
Eriks. Crown rust is efficiently and effectively managed through the development of resistant oat varieties.
Pc91
is a seedling crown rust resistance gene that is highly effective against the current
P. coronata
population in North America. The primary objective of this study was to develop DNA markers linked to
Pc91
for purposes of marker-assisted selection in oat breeding programs. The
Pc91
locus was mapped using a population of F7-derived recombinant inbred lines developed from the cross ‘CDC Sol-Fi’/‘HiFi’ made at the Crop Development Centre, University of Saskatchewan. The population was evaluated for reaction to
P. coronata
in field nurseries in 2008 and 2009.
Pc91
mapped to a linkage group consisting of 44 Diversity Array Technology (DArT) markers. DArTs were successfully converted to sequence characterized amplified region (SCAR) markers. Five robust SCARs were developed from three non-redundant DArTs that co-segregated with
Pc91
. SCAR markers were developed for different assay systems, such that SCARs are available for agarose gel electrophoresis, capillary electrophoresis, and Taqman single nucleotide polymorphism detection. The SCAR markers accurately postulated the
Pc91
status of 23 North American oat breeding lines.
Publisher
Springer-Verlag,Springer,Springer Nature B.V
Subject
/ Avena
/ Biological and medical sciences
/ Biomedical and Life Sciences
/ Classical genetics, quantitative genetics, hybrids
/ crops
/ Crops, Agricultural - genetics
/ crossing
/ DNA
/ Fundamental and applied biological sciences. Psychology
/ Genes
/ genetics
/ Genetics of eukaryotes. Biological and molecular evolution
/ Genomes
/ loci
/ oats
/ Plant Breeding/Biotechnology
/ Plant Diseases - microbiology
/ single nucleotide polymorphism
/ Vegetals
