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Abstract
Habitat fragmentation might significantly affect mating and pollen dispersal patterns in plant populations, contributing to the decline of remnant populations. However, wind-pollinated species are able to disperse pollen at longer distances after opening of the canopy. Our objectives were to characterize the mating system parameters and to estimate the average distance of effective pollen dispersal in the windpollinated conifer Austrocedrus chilensis. We [ver mas...]
dc.contributor.authorColabella, Fernando
dc.contributor.authorGallo, Leonardo Ariel
dc.contributor.authorMoreno, Angela Carolina
dc.contributor.authorMarchelli, Paula
dc.coverage.spatialSan Carlos de Bariloche .......... (inhabited place) (World, South America, Argentina, Río Negro)
dc.coverage.spatial1019987
dc.coverage.spatialARG
dc.coverage.temporalstart=2010; end=2011
dc.date.accessioned2021-07-23T15:40:44Z
dc.date.available2021-07-23T15:40:44Z
dc.date.issued2014
dc.identifier.urihttp://hdl.handle.net/20.500.12123/9878
dc.descriptionLa población analizada está ubicada dentro de la Estancia San Ramón, aproximadamente 30 km al este de la ciudad de San Carlos de Bariloche (entre los 40° 55’ 27’’ y los 41° 12’ 19’’ de latitud Sur; y los 70° 55’ 12’’ y los 71° 09’ 16’’ de longitud oeste.
dc.description.abstractHabitat fragmentation might significantly affect mating and pollen dispersal patterns in plant populations, contributing to the decline of remnant populations. However, wind-pollinated species are able to disperse pollen at longer distances after opening of the canopy. Our objectives were to characterize the mating system parameters and to estimate the average distance of effective pollen dispersal in the windpollinated conifer Austrocedrus chilensis. We sampled 19 “mother trees,” 200 progeny, and 81 additional adults (both male and female), in a fragmented population at the Argentinean Patagonian steppe. We registered the spatial positions of individuals and genotyped all samples with five microsatellite markers. We found a high genetic diversity, a moderated rate of biparental inbreeding (tm−ts=0.105), and a complete absence of correlated paternity (rp=−0.015). The effective number of pollen donors contributing to a single mother (Nep) was 13.9. Applying TWOGENER, we estimated a low but significant differentiation among the inferred pollen pools (ΦFT=0.036, p=0.001) and a very large average pollen dispersal distance (d=1,032.3 m). The leptokurtic distribution (b=0.18) presumes a potential for even larger dispersal distances. The high genetic diversity, the mating patterns, and the extensive pollen dispersal presume that habitat fragmentation did not have a negative impact on pollen movement in this population of A. chilensis. Genetic connectivity among fragmented populations scattered in the Patagonian region is possible, and we stress the need of management policies at the landscape level.eng
dc.formatapplication/vnd.ms-exceles_AR
dc.language.isospaes_AR
dc.relationinfo:eu-repo/grantAgreement/CONICET/PIP/5451/AR.Ciudad de Autónoma de Buenos Aires
dc.relationinfo:eu-repo/semantics/reference/hdl/20.500.12123/4062
dc.relationinfo:eu-repo/semantics/reference/doi/10.1007/s11295-014-0775-4
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectAustrocedrus Chilensises_AR
dc.subjectGene Floweng
dc.subjectFlujo Genéticoes_AR
dc.subjectMating Systemseng
dc.subjectSistemas de Apareamientoes_AR
dc.subjectPolinización por el Vientoes_AR
dc.subjectWind Pollinationeng
dc.subjecthttps://purl.org/becyt/ford/4.1
dc.subject.otherPatagonian Cypresseng
dc.subject.otherTWOGENEReng
dc.subject.otherPollen Dispersaleng
dc.titleProgeny sampled and genotyped from mother trees for the study "Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis" [Conjunto de datos]eng
dc.typeinfo:ar-repo/semantics/conjunto de datoses_AR
dc.typeinfo:eu-repo/semantics/othereng
dc.typeinfo:eu-repo/semantics/acceptedVersioneng
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.description.origenEEA Barilochees_AR
dc.description.filFil: Colabella, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Genética Ecológica y Mejoramiento Forestal; Argentinaes_AR
dc.description.filFil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Genética Ecológica y Mejoramiento Forestal; Argentinaes_AR
dc.description.filFil: Moreno, Angela Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Genética Ecológica y Mejoramiento Forestal; Argentinaes_AR
dc.description.filFil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Genética Ecológica y Mejoramiento Forestal; Argentinaes_AR
dc.description.filFil: Marchelli, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentinaes_AR
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