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Título: | Detection of alien genetic introgressions in bread wheat using dot-blot genomic hybridisation |
Autor: | Rey-Santomé, María Dolores CSIC ORCID; Prieto, Pilar CSIC ORCID | Palabras clave: | Dot-blot hybridisation Genomic introgressions H. chilense Bread wheat |
Fecha de publicación: | mar-2017 | Editor: | Springer Nature | Citación: | Molecular Breeding 37: 32 (2017) | Resumen: | Simple, reliable methods for the identification of alien genetic introgressions are required in plant breeding programmes. The use of genomic dot-blot hybridisation allows the detection of small Hordeum chilense genomic introgressions in the descendants of genetic crosses between wheat and H. chilense addition or substitution lines in wheat when molecular markers are difficult to use. Based on genomic in situ hybridisation, DNA samples from wheat lines carrying putatively H. chilense introgressions were immobilised on a membrane, blocked with wheat genomic DNA and hybridised with biotin-labelled H. chilense genomic DNA as a probe. This dot-blot screening reduced the number of plants necessary to be analysed by molecular markers or in situ hybridisation, saving time and money. The technique was sensitive enough to detect a minimum of 5 ng of total genomic DNA immobilised on the membrane or about 1/420 dilution of H. chilense genomic DNA in the wheat background. The robustness of the technique was verified by in situ hybridisation. In addition, the detection of other wheat relative species such as Hordeum vulgare, Secale cereale and Agropyron cristatum in the wheat background was also reported. | Versión del editor: | http://doi.org/10.1007/s11032-017-0629-5 http://creativecommons.org/licenses/by/4.0/ |
URI: | http://hdl.handle.net/10261/157118 | DOI: | 10.1007/s11032-017-0629-5 | ISSN: | 1380-3743 | E-ISSN: | 1572-9788 |
Aparece en las colecciones: | (IAS) Artículos |
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