Comparative linkage mapping of Oryza glumaepatula and Oryza sativa interspecific crosses based on microsatellite and expressed sequence tag markers
Carregando...
Data
2007
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Molecular linkage maps representing the rice genome have been an important tool for breeding programs because
they allow the elucidation of polygenic traits and are an efficient tool for monitoring wild introgressions in interspecific
crosses. Common markers among rice genetic maps are important in defining the homology of chromosomes and
the synteny between genomic target regions. We used 148 markers (expressed sequence tags, microsatellites and
single nucleotide polymorphisms) to construct a molecular linkage map based on co-dominant markers for an
interspecific backcross population using a wild rice (Oryza glumaepatula) from Brazil and performed a comparative
analysis with other interspecific maps. The comparative analysis revealed a Spearman correlation index of 0.86 for
marker order conservation to a previous map constructed for an interspecific cross using the same wild parent. Approximately
90% of markers common to other interspecific maps kept the same order. These results indicate that it
will be possible to generate a unique genetic map using the wild donor and that it may be a helpful tool for breeding
programs because plants derived from different interspecific populations can be rapidly scanned using markers associated
with useful wild traits.
Descrição
Palavras-chave
Comparative linkage map, Molecular markers, Oryza glumaepatula, Rice
Citação
RANGEL, Priscila Nascimento et al. Comparative linkage mapping of Oryza glumaepatula and Oryza sativa interspecific crosses based on microsatellite and expressed sequence tag markers. Genetics and Molecular Biology, Ribeirão Preto, v. 30, p. 614-622, 2007.