| 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 | 2018-12-11T16:04:07Z | |
| dc.date | 2018-12-11T16:04:07Z | |
| dc.date | 2007-01-29 | |
| dc.date | 2018-12-11T16:04:07Z | |
| dc.date | 2018-12-11T16:04:07Z | |
| dc.date | 2007-01-29 | |
| dc.date.accessioned | 2019-05-17T20:36:03Z | |
| dc.date.available | 2019-05-17T20:36:03Z | |
| dc.identifier | 1380-3743 | |
| dc.identifier | http://hdl.handle.net/2133/13791 | |
| dc.identifier | http://hdl.handle.net/2133/13791 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/2682174 | |
| 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. | |
| dc.description | Fil: Stein, Juliana. Laboratorio de Biología Molecular, Facultad de Ciencias Agrarias, Universidad Nacional de Rosario; Argentina. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Springer Science+Business Media B.V. | |
| dc.rights | Springer | |
| dc.rights | openAccess | |
| dc.subject | Apospory | |
| dc.subject | Mapping in autopolyploids | |
| dc.subject | Paspalum notatum | |
| dc.subject | Single dose markers | |
| dc.title | A genetic map of tetraploid Paspalum notatum Flügge (bahiagrass) based on single-dose molecular markers | |
| dc.type | Artículos de revistas | |
| dc.type | Artículos de revistas | |
| dc.type | Artículos de revistas | |
| dc.type | Material Didáctico | |
