Morfologia do desenvolvimento pós-seminal de Syngonanthus elegans e S. niveus (Eriocaulaceae): Eriocaulaceae

Scatena, Vera Lúcia; Filho, José Pires de Lemos; Lima, A.A.

doi:10.1590/s0102-33061996000100008

Cited by 20 publications

(21 citation statements)

References 4 publications

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“…Entretanto, pouco se conhece sobre as características germinativas das sementes deste grupo de plantas. Entre os trabalhos disponíveis, estão os de Paepalanthus (Sá e Carvalho & Ribeiro 1994 a; b; Kraus et al 1996;Sano 1996) e de Syngonanthus (Scatena & Menezes 1993;Scatena et al 1996).…”

Section: Introductionunclassified

Efeitos da luz e da temperatura na germinação de sementes de Syngonanthus elegantulus Ruhland, S. elegans (Bong.) Ruhland e S. venustus Silveira (Eriocaulaceae)

Oliveira

Garcia

2005

Acta Bot. Bras.

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Section: Introductionunclassified

Efeitos da luz e da temperatura na germinação de sementes de Syngonanthus elegantulus Ruhland, S. elegans (Bong.) Ruhland e S. venustus Silveira (Eriocaulaceae)

Oliveira

Garcia

2005

Acta Bot. Bras.

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“…In monocots, the reduction of the primary root has occurred throughout evolution, and its absence is a derivative character (Boyd 1931, Tillich 2007. Within the Poales, the reduction of the primary root was reported for different taxa that are considered ancestral and derivative (Ramaswamy et al 1981, Scatena et al 1993, Scatena et al 1996, Tillich 2007; so, it appears to be a character without utility for the group phylogeny. MORPHOLOGY AND ANATOMY OF Paspalum…”

Section: Discussionmentioning

confidence: 99%

Morphology and anatomy of the diaspores and seedling of Paspalum (Poaceae, Poales)

Eichemberg

Scatena

2013

An. Acad. Bras. Ciênc.

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The knowledge regarding of the diaspore and post-seminal development of Paspalum L. is important for grassland biodiversity conservation, based on their representativeness and genetic improvement of forage. The morphology of the diaspore and the post-seminal development of Paspalum dilatatum Poir. (rhizomatous), P. mandiocanum Trin. var. subaequiglume Barreto (stoloniferous), P. pumilum Nees. (decumbent caespitose) and P. urvillei Steud. (erect caespitose) was described to distinguish species with different growth forms and to survey the characters useful for taxonomy. P. dilatatum differs by presenting oval diaspores larger than the others, with five prominent nerves and trichomes; P. urvillei presents diaspores with one central nerve that is more developed than the two lateral nerves and trichomes; P. mandiocanum var. subaequiglume presents diaspores with trichomes only in the margin; and P. pumilum differs by presenting glabrous diaspores. The caryopsis involves the seed that presents the differentiated embryo and disposed laterally, an elliptical hilum in all of the studied species and a rostellum in P. dilatatum and P. mandiocanum var. subaequiglume. The post-seminal development is similar in the four species and begins with germination that is marked by the emergence of the coleorhiza, followed by the coleoptile. These characteristics are common to other Poaceae previously studied, indicating a pattern to the family and do not distinguish the growth forms.

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“…Poco después de la proyección comienza la diferenciación de la primera hoja y después la diferenciación de la primera raíz adventicia, formando un patrón para la familia (Hare, 1950;Scatena et al, 1993;Kraus et al, 1996;Scatena et al, 1996).…”

Section: Discusión Las Características De Las Semillas Deunclassified

“…Si comparamos el desarrollo post-seminal de las especies de Comanthera estudiadas con el de otras Eriocaulaceae (Scatena et al, 1993;Scatena et al, 1996), se verifica que tanto la germinación como el desarrollo post-seminal son más rápidos. Las otras Eriocaulaceae crecen en suelos de arena/arcilla o en suelos húmedos; Comanthera en suelo de cuarcita pura.…”

Section: Discusión Las Características De Las Semillas Deunclassified

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Seed morphology and post-seminal development in species of Comanthera (Eriocaulaceae)

Corredor

Escobar

Scatena

2015

RBT

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Seed morphology and post-seminal development in species of Comanthera (Eriocaulaceae). Comanthera 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. Rev. Biol. Trop. 63 (4): 1127-1135. Epub 2015 December 01.

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Morfologia do desenvolvimento pós-seminal de Syngonanthus elegans e S. niveus (Eriocaulaceae): Eriocaulaceae

Cited by 20 publications

References 4 publications

Efeitos da luz e da temperatura na germinação de sementes de Syngonanthus elegantulus Ruhland, S. elegans (Bong.) Ruhland e S. venustus Silveira (Eriocaulaceae)

Efeitos da luz e da temperatura na germinação de sementes de Syngonanthus elegantulus Ruhland, S. elegans (Bong.) Ruhland e S. venustus Silveira (Eriocaulaceae)

Morphology and anatomy of the diaspores and seedling of Paspalum (Poaceae, Poales)

Seed morphology and post-seminal development in species of Comanthera (Eriocaulaceae)

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