Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations
Alternaria brown spot (ABS) in citrus is a serious disease caused by the tangerine pathotype of the fungus Alternaria alternata, which induces necrotic lesions on fruit and young leaves, defoliation and fruit drop in susceptible genotypes. It is a strong concern for triploid breeding programs aiming...
| Autores principales: | , , , , , |
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| Otros Autores: | |
| Formato: | Objeto de conferencia |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Acceso en línea: | http://hdl.handle.net/20.500.11939/5068 https://doi.org/10.17660/ActaHortic.2015.1065.51 |
| _version_ | 1855491861638021120 |
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| author | Cuenca, José Aleza, Pablo Iborra, E. Vicent, Antonio Ollitrault, Patrick Navarro, Luis |
| author2 | Sabater-Munoz, Beatriz |
| author_browse | Aleza, Pablo Cuenca, José Iborra, E. Navarro, Luis Ollitrault, Patrick Sabater-Munoz, Beatriz Vicent, Antonio |
| author_facet | Sabater-Munoz, Beatriz Cuenca, José Aleza, Pablo Iborra, E. Vicent, Antonio Ollitrault, Patrick Navarro, Luis |
| author_sort | Cuenca, José |
| collection | ReDivia |
| description | Alternaria brown spot (ABS) in citrus is a serious disease caused by the tangerine pathotype of the fungus Alternaria alternata, which induces necrotic lesions on fruit and young leaves, defoliation and fruit drop in susceptible genotypes. It is a strong concern for triploid breeding programs aiming to produce seedless mandarin cultivars. In the present work, we have taken advantage of the particular genetic structures of unreduced megagametophytes resulting from second division restitution (SDR) (leading to triploid hybrid recovery) to map a genome region linked to ABS resistance in citrus. The monolocus dominant inheritance of susceptibility, proposed on the basis of diploid population studies, was corroborated in triploid progeny. Bulk segregant analysis coupled with genome scan using a large set of genetically mapped SNP markers and targeted genetic mapping by half tetrad analysis, using SSR and SNP markers, allowed locating a region linked to ABS resistance near the centromere of chromosome III. SSR and SNP markers were developed for efficient early marker-assisted selection (MAS) of ABS resistant hybrids. |
| format | Objeto de conferencia |
| id | ReDivia5068 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | ReDivia50682025-04-25T14:53:57Z Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations Acta Horticulturae Cuenca, José Aleza, Pablo Iborra, E. Vicent, Antonio Ollitrault, Patrick Navarro, Luis Sabater-Munoz, Beatriz Moreno, Pedro Pena, Leandro Navarro, Luis Alternaria brown spot (ABS) in citrus is a serious disease caused by the tangerine pathotype of the fungus Alternaria alternata, which induces necrotic lesions on fruit and young leaves, defoliation and fruit drop in susceptible genotypes. It is a strong concern for triploid breeding programs aiming to produce seedless mandarin cultivars. In the present work, we have taken advantage of the particular genetic structures of unreduced megagametophytes resulting from second division restitution (SDR) (leading to triploid hybrid recovery) to map a genome region linked to ABS resistance in citrus. The monolocus dominant inheritance of susceptibility, proposed on the basis of diploid population studies, was corroborated in triploid progeny. Bulk segregant analysis coupled with genome scan using a large set of genetically mapped SNP markers and targeted genetic mapping by half tetrad analysis, using SSR and SNP markers, allowed locating a region linked to ABS resistance near the centromere of chromosome III. SSR and SNP markers were developed for efficient early marker-assisted selection (MAS) of ABS resistant hybrids. 2017-06-01T10:11:39Z 2017-06-01T10:11:39Z 2015 2015 conferenceObject Cuenca, J., Aleza, P., Iborra, E., Vicent, A., Ollitrault, P. & Navarro, L. (2012). Location of a chromosome region linked to Alternaria Brown Spot resistance from the evaluation of triploid mandarin populations. Acta Horticulturae, 1065, 415-425. 0567-7572; 978-94-62610-53-8 http://hdl.handle.net/20.500.11939/5068 https://doi.org/10.17660/ActaHortic.2015.1065.51 en openAccess Impreso |
| spellingShingle | Cuenca, José Aleza, Pablo Iborra, E. Vicent, Antonio Ollitrault, Patrick Navarro, Luis Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations |
| title | Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations |
| title_full | Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations |
| title_fullStr | Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations |
| title_full_unstemmed | Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations |
| title_short | Location of a Chromosome Region Linked to Alternaria Brown Spot Resistance from the Evaluation of Triploid Mandarin Populations |
| title_sort | location of a chromosome region linked to alternaria brown spot resistance from the evaluation of triploid mandarin populations |
| url | http://hdl.handle.net/20.500.11939/5068 https://doi.org/10.17660/ActaHortic.2015.1065.51 |
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