Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae)

dc.contributor.authorCorredor, Blanca Auxiliadora Dugarte [UNESP]
dc.contributor.authorEscobar, Diego Fernando Escobar [UNESP]
dc.contributor.authorScatena, Vera Lúcia [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:02:07Z
dc.date.available2018-12-11T17:02:07Z
dc.date.issued2015-01-01
dc.description.abstractComanthera brasiliana, C. magnifica and C. suberosa (Eriocaulaceae) are included in the Brazilian list of endangered species, due to intensive harvest and micro-endemism. These species form the clade of Comanthera magnifica, along with C. brunnea and C. linearis. Germination, seed morphology and post-seminal development were studied aiming to characterize all five species and to provide information for their conservation. Seeds were collected in “campos rupestres” of Minas Gerais, Brazil. Seed morphology was examined using scanning electron microscope. For germination tests, mature seeds were placed in Petri dishes lined with filter paper dampened with distilled water at 25 °C and fluorescent light; four repetitions with 15 seeds were performed for each species. For the anatomical analysis of post-seminal development, seedlings at different developmental stages were included in historesin, cut with a rotatory microtome and examined under a light microscope. The structure of the seed coat and the shape and size of the seeds were characteristics that allowed species differentiation, and based on the seeds morphological characteristics, an identification key is provided. The seed germination was high (> 90 %) and fast (< 7 days). Germination occured through the axis protrusion of the embryo. Approximately four days after germination, the first leaf develops and is followed by the adventitious roots. After 10-15 days, the second leaf and the new adventitious roots develop. In field conditions, the studied species occur in quartzite soils and their small seeds (dust-like type) germinate faster than the other Eriocaulaceae species (from mesic soils). These results provide reliable information that may contribute to the species management and conservation.en
dc.description.affiliationInstituto de Biociências UNESP - Universidade Estadual Paulista Departamento de Botânica Laboratório de Anatomia Vegetal, Campus de Rio Claro
dc.description.affiliationUnespInstituto de Biociências UNESP - Universidade Estadual Paulista Departamento de Botânica Laboratório de Anatomia Vegetal, Campus de Rio Claro
dc.format.extent1127-1135
dc.identifierhttp://dx.doi.org/10.15517/rbt.v63i4.16956
dc.identifier.citationRevista de Biologia Tropical, v. 63, n. 4, p. 1127-1135, 2015.
dc.identifier.doi10.15517/rbt.v63i4.16956
dc.identifier.file2-s2.0-84962433244.pdf
dc.identifier.issn2215-2075
dc.identifier.issn0034-7744
dc.identifier.scopus2-s2.0-84962433244
dc.identifier.urihttp://hdl.handle.net/11449/172771
dc.language.isospa
dc.relation.ispartofRevista de Biologia Tropical
dc.relation.ispartofsjr0,326
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBrazil
dc.subjectComanthera
dc.subjectEriocaulaceae
dc.subjectEverlasting plants
dc.subjectGermination
dc.subjectSeed morphology
dc.titleMorfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae)es
dc.title.alternativeSeed morphology and post-seminal development in species of Comanthera (Eriocaulaceae)en
dc.typeArtigo

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