Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1177388
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dc.contributor.authorSEOANE, C. E. S.
dc.contributor.authorDIAZ, V.
dc.contributor.authorKAGEYAMA, P.
dc.contributor.authorMORENO, M.
dc.contributor.authorTAMBARUSSI, E.
dc.contributor.authorAGUIAR, A. V. de
dc.contributor.authorSEBBENN, A.
dc.date.accessioned2025-11-17T16:48:37Z-
dc.date.available2025-11-17T16:48:37Z-
dc.date.created2025-07-18
dc.date.issued2019
dc.identifier.citationAnnals of Forest Research, v. 62, n. 2, p. 157-171, 2019.
dc.identifier.issn2065-2445
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1177388-
dc.descriptionIlex paraguariensis is a dioecious, Neotropical tree endemic to South America with wide cultural, economic and ecological significance. However, due to extensive fragmentation and deforestation throughout its natural area of occur rence, studies on gene flow and genetic diversity are needed to drive genetic conser vation and improvement strategies. Based on the sampling of all adult and juvenile trees in two I. paraguariensis populations, we investigate the realized pollen and seed flow and dispersal distance, spatial genetic structure (SGS) and genetic diver sity using microsatellite markers. We found limited genetic differentiation between populations (G’st = 0.033), but significant differences in terms of genetic diversity (R: 4.7 vs 3.9, H0 : 0.495 vs 0.371, He : 0.445 vs 0.375), pollen (10 vs. 23.3%) and seed immigration (0 vs. 3.3%), mating among relatives (tr : 16 vs 30%) and biparen tal inbreeding (Fr : 0.253 vs. 0.345). Within populations, the genetic diversity was similar between adults and juveniles, but adults presented significantly lower fixa tion index than juveniles, suggesting selection against inbred individuals between juvenile and adult life stages. We also found similar mean pollen (255 vs. 293 m) and seed (385 vs. 323 m) dispersal distances within populations. Our results show that the studied populations are not genetically isolated and some mating occurs among related trees due to SGS; however, the frequency of biparental inbred in dividuals decrease over the life course due to inbreeding depression. These results contribute directly to species management and seed collection and inform in situ and ex situ conservation programs.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectErva mate
dc.subjectMicrosatellite marker
dc.subjectFloresta Ombrófila Mista
dc.subjectFluxo gênico
dc.subjectMarcador microssatélite
dc.titleThe Neotropical tree Ilex paraguariensis A. St. Hil. (Aquifoliaceae): pollen and seed dispersal in a fragmented landscape.
dc.typeArtigo de periódico
dc.subject.thesagroIlex Paraguariensis
dc.subject.thesagroConservação
dc.subject.thesagroGenética Vegetal
dc.subject.nalthesaurusGene flow
dc.subject.nalthesaurusYerba mate
dc.subject.nalthesaurusConservation plants
dc.subject.nalthesaurusPopulation genetics
riaa.ainfo.id1177388
riaa.ainfo.lastupdate2025-11-17
dc.identifier.doi10.15287/afr.2019.1427
dc.contributor.institutionCARLOS EDUARDO SICOLI SEOANE, CNPF; VINICIUS DIAZ, UNIVERSIDADE DE SÃO PAULO; PAULO KAGEYAMA, UNIVERSIDADE DE SÃO PAULO; MARIA MORENO, UNIVERSIDADE DE SÃO PAULO; EVANDRO TAMBARUSSI, UNIVERSIDADE ESTADUAL DO CENTRO-OESTE; ANANDA VIRGINIA DE AGUIAR, CNPF; ALEXANDRE SEBBENN, INSTITUTO FLORESTAL DE SÃO PAULO.
Appears in Collections:Artigo em periódico indexado (CNPF)

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