A genetic map of tetraploid Paspalum notatum Flügge (bahiagrass) based on single-dose molecular markers
| dc.citation.title | Molecular Breeding | es |
| dc.citation.volume | 20 | es |
| dc.creator | Stein, Juliana | |
| dc.creator | Pessino, Silvina Claudia | |
| dc.creator | Martínez, Eric Javier | |
| dc.creator | Rodríguez, María Pía | |
| dc.creator | Siena, Lorena Adelina | |
| dc.creator | Quarin, Camilo Luis | |
| dc.creator | Ortiz, Juan Pablo Amelio | |
| dc.date.accessioned | 2018-12-11T16:04:07Z | |
| dc.date.available | 2018-12-11T16:04:07Z | |
| dc.date.issued | 2007-01-29 | |
| dc.description | Paspalum notatum Flu¨ gge is a warmseason forage grass with mainly diploid (2n = 20) and autotetraploid (2n = 40) representatives. Diploid races reproduce sexually and require crosspollination due to a self-incompatible mating system, while autotetraploids reproduce by aposporous apomixis. The objectives of this work were to develop a genetic linkage map of Paspalum notatum Flu¨gge at the tetraploid level, identify the linkage/s group/s associated with apomixis and carry out a general characterization of its mode of inheritance. A pseudo test-cross F1 family of 113 individuals segregating for the mode of reproduction was obtained by crossing a synthetic completely sexual tetraploid plant (Q4188) as female parent with a natural aposporous individual (Q4117) as pollen donor. Map construction was based on single-dose markers (SDAFs) segregating from both parents. Two linkage maps (female and male) were constructed. Within each map, homologous groups were assembled by detecting repulsion-phase linked SDAFs. Putative Q4188 and Q4117 homolog groups were identified by mapping shared single dose markers (BSDF). The Q4188 map consisted of 263 markers distributed on 26 co-segregation groups over a total genetic distance of 1.590.6 cM, while the Q4117 map contained 216 loci dispersed on 39 co-segregation groups along 2.265.7 cM, giving an estimated genome coverage of 88% and 83%, respectively. Seven and 12 putative homologous chromosomes were detected within Q4188 and Q4117 maps, respectively. Afterward, ten female and male homologous chromosomes were identified by mapping BSDFs. In the Q4117 map, a single linkage group was associated with apospory. It was characterized by restriction in recombination and preferential chromosome pairing. A BPSD marker mapping within this group allowed the detection of the female homolog and the putative four male groups of the set carrying apospory. | es |
| dc.description.fil | Fil: Stein, Juliana. Laboratorio de Biología Molecular, Facultad de Ciencias Agrarias, Universidad Nacional de Rosario; Argentina. | es |
| dc.format | application/pdf | |
| dc.format.extent | 153-166 | es |
| dc.identifier.issn | 1380-3743 | es |
| dc.identifier.uri | http://hdl.handle.net/2133/13791 | |
| dc.language.iso | eng | es |
| dc.publisher | Springer Science+Business Media B.V. | es |
| dc.rights | openAccess | es |
| dc.rights.holder | Springer | es |
| dc.subject | Apospory | es |
| dc.subject | Mapping in autopolyploids | es |
| dc.subject | Paspalum notatum | es |
| dc.subject | Single dose markers | es |
| dc.title | A genetic map of tetraploid Paspalum notatum Flügge (bahiagrass) based on single-dose molecular markers | es |
| dc.type | article | |
| dc.type | artículo | |
| dc.type | publishedVersion | |
| dc.type | Material Didáctico | |
| dc.type.collection | articulo | |
| dc.type.version | publishedVersion | es |
| lom.educational.context | Superior no universitario | es |
| lom.educational.context | Posgrado | es |
| lom.educational.context | ONGs | es |
| lom.educational.context | Centro CyT | es |
| lom.educational.context | Otros | es |
| lom.educational.difficulty | Mediana Dificultad | es |
| lom.educational.esMD | SI | * |
| lom.educational.interactivity | mixta | es |
| lom.educational.typicalAgeRange | adultos | es |