Seed dormancy QTL identification across a Sorghum bicolor segregating population
Pre-harvest sprouting (PHS) in Sorghum bicolor is one of the main constrains for its production in the central region of Argentina, as grain maturation often coincides with rainy or high environmental humidity conditions. The obtention of more dormant genotypes with higher PHS resistance has always...
| Autores principales: | , , , , , , , |
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| Formato: | info:eu-repo/semantics/article |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1123 https://link.springer.com/article/10.1007%2Fs10681-016-1717-z https://doi.org/10.1007/s10681-016-1717-z |
| _version_ | 1855034752042532864 |
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| author | Cantoro, Renata Fernandez, Luis German Cervigni, Gerardo Domingo Lucio Rodriguez, María V. Gieco, Jorge Omar Paniego, Norma Beatriz Heinz, Ruth Amelia Benech-Arnold, Roberto Luis |
| author_browse | Benech-Arnold, Roberto Luis Cantoro, Renata Cervigni, Gerardo Domingo Lucio Fernandez, Luis German Gieco, Jorge Omar Heinz, Ruth Amelia Paniego, Norma Beatriz Rodriguez, María V. |
| author_facet | Cantoro, Renata Fernandez, Luis German Cervigni, Gerardo Domingo Lucio Rodriguez, María V. Gieco, Jorge Omar Paniego, Norma Beatriz Heinz, Ruth Amelia Benech-Arnold, Roberto Luis |
| author_sort | Cantoro, Renata |
| collection | INTA Digital |
| description | Pre-harvest sprouting (PHS) in Sorghum bicolor is one of the main constrains for its production in the central region of Argentina, as grain maturation often coincides with rainy or high environmental humidity conditions. The obtention of more dormant genotypes with higher PHS resistance has always been a desirable trait for breeders but the typical quantitative nature of seed dormancy makes its manipulation difficult through classical breeding. Dissecting this quantitative variability into quantitative trait loci (QTL) is a main concern especially in cereal species.
In this work, a sorghum segregating population including 190 families was genotyped with microsatellite markers and the SbABI5 candidate gene. A genetic map encompassing 96 markers and a total length of 1331 cM was built. Seed dormancy was phenotyped in F3 and F4 panicles in two contrasting Argentinean environments (Castelar and Manfredi).
Six seed dormancy QTL for mature grains were identified (qGI-1, qGI-3, qGI-4, qGI-6, qGI-7 and qGI-9) with the aid of QTL Cartographer and QTLNetwork, three of them (qGI-3, qGI-7 and qGI- 9) being co-localised by both approaches. No epistasis was detected for the identified QTL but QTL-byenvironment interaction was significant for qGI-7 and qGI-9. Interestingly, seed dormancy candidate genes SbABI3/VP1 and SbGA20ox3 were located within qGI-3, which makes them noteworthy candidate genes for this QTL. |
| format | info:eu-repo/semantics/article |
| id | INTA1123 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA11232018-06-19T18:19:44Z Seed dormancy QTL identification across a Sorghum bicolor segregating population Cantoro, Renata Fernandez, Luis German Cervigni, Gerardo Domingo Lucio Rodriguez, María V. Gieco, Jorge Omar Paniego, Norma Beatriz Heinz, Ruth Amelia Benech-Arnold, Roberto Luis Genética Dormancia de Semillas Loci de Rasgos Cuantitativos Sorghum Bicolor Genetics Seed Dormancy Quantitative Trait Loci QTL Pre-harvest sprouting (PHS) in Sorghum bicolor is one of the main constrains for its production in the central region of Argentina, as grain maturation often coincides with rainy or high environmental humidity conditions. The obtention of more dormant genotypes with higher PHS resistance has always been a desirable trait for breeders but the typical quantitative nature of seed dormancy makes its manipulation difficult through classical breeding. Dissecting this quantitative variability into quantitative trait loci (QTL) is a main concern especially in cereal species. In this work, a sorghum segregating population including 190 families was genotyped with microsatellite markers and the SbABI5 candidate gene. A genetic map encompassing 96 markers and a total length of 1331 cM was built. Seed dormancy was phenotyped in F3 and F4 panicles in two contrasting Argentinean environments (Castelar and Manfredi). Six seed dormancy QTL for mature grains were identified (qGI-1, qGI-3, qGI-4, qGI-6, qGI-7 and qGI-9) with the aid of QTL Cartographer and QTLNetwork, three of them (qGI-3, qGI-7 and qGI- 9) being co-localised by both approaches. No epistasis was detected for the identified QTL but QTL-byenvironment interaction was significant for qGI-7 and qGI-9. Interestingly, seed dormancy candidate genes SbABI3/VP1 and SbGA20ox3 were located within qGI-3, which makes them noteworthy candidate genes for this QTL. Inst. de Biotecnología Fil: Cantoro, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas A la Agricultura; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cultivos Industriales; Argentina fIL: Fernandez, Luis German. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina Fil: Cervigni, Gerardo Domingo Lucio Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Centro de Estudios Fotosintéticos y Bioquímicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Rodriguez, María V. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas A la Agricultura; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cultivos Industriales; Argentina Fil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Heinz, Ruth Amelia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Gieco, Jorge Omar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina Fil: Benech-Arnold, Roberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina 2017-09-05T12:17:12Z 2017-09-05T12:17:12Z 2016 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/20.500.12123/1123 https://link.springer.com/article/10.1007%2Fs10681-016-1717-z 0014-2336 (Print) 1573-5060 (Online) https://doi.org/10.1007/s10681-016-1717-z eng info:eu-repo/semantics/restrictedAccess application/pdf Euphytica 211 (1) : 41–56. (September 2016) |
| spellingShingle | Genética Dormancia de Semillas Loci de Rasgos Cuantitativos Sorghum Bicolor Genetics Seed Dormancy Quantitative Trait Loci QTL Cantoro, Renata Fernandez, Luis German Cervigni, Gerardo Domingo Lucio Rodriguez, María V. Gieco, Jorge Omar Paniego, Norma Beatriz Heinz, Ruth Amelia Benech-Arnold, Roberto Luis Seed dormancy QTL identification across a Sorghum bicolor segregating population |
| title | Seed dormancy QTL identification across a Sorghum bicolor segregating population |
| title_full | Seed dormancy QTL identification across a Sorghum bicolor segregating population |
| title_fullStr | Seed dormancy QTL identification across a Sorghum bicolor segregating population |
| title_full_unstemmed | Seed dormancy QTL identification across a Sorghum bicolor segregating population |
| title_short | Seed dormancy QTL identification across a Sorghum bicolor segregating population |
| title_sort | seed dormancy qtl identification across a sorghum bicolor segregating population |
| topic | Genética Dormancia de Semillas Loci de Rasgos Cuantitativos Sorghum Bicolor Genetics Seed Dormancy Quantitative Trait Loci QTL |
| url | http://hdl.handle.net/20.500.12123/1123 https://link.springer.com/article/10.1007%2Fs10681-016-1717-z https://doi.org/10.1007/s10681-016-1717-z |
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