Implications of the harvest time on Syngonanthus nitens (Bong.) Ruhland (Eriocaulaceae) management in the state of Minas Gerais

Oliveira, Maria Neudes Sousa de; Cruz, Sara Michelly; Sousa, Amanda Miranda de; Moreira, Fernanda da Conceição; Tanaka, Mário Kiichiro

doi:10.1007/s40415-014-0049-2

Cited by 2 publications

(3 citation statements)

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“…El tamaño pequeño de las semillas, junto con la necesidad de luz para germinar, se consideran estrategias de adaptación para lugares abiertos, expuestos al sol, como en los "campos rupestres", como lo muestran Oliveira y García (2011) y Oliveira et al (2014). El fotoblastismo positivo puede funcionar como un mecanismo que detecta la presencia o ausencia de luz, evitando que las semillas enterradas germinen, siendo vital para las semillas pequeñas, cuya cantidad de reservas es insuficiente para que alcancen la superficie una vez que germinen en la oscuridad (Vázquez-Yanes & Orozco-Segovia, 1990;Pons, 2000;Fenner & Thompson, 2005).…”

Section: Discusión Las Características De Las Semillas Deunclassified

“…niveus) ; así como representantes de Syngonanthus (Oliveira et al, 2014) y Velloziaceae J.Agardh (Mercier & Gerreiro-Filho, 1989;García & Diniz, 2003) que crecen simpátricamente. La germinación rápida y el desarrollo post-seminal de las especies de Comanthera estudiadas también son características comunes en otras especies de hábitats abiertos con clima estacional, en los que hay una gran disponibilidad de agua y luz durante la estación lluviosa, seguida por períodos de baja temperatura y poca agua (Swaine & Whitemore, 1988).…”

Section: Discusión Las Características De Las Semillas Deunclassified

“…(Oliveira & Garcia, 2005;Oliveira & Garcia, 2011;Oliveira, Cruz, Sousa, Moreira, & Tanaka, 2014), Paepalanthus Kunth spp. (Kraus et al, 1996) y Comanthera spp.…”

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

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Escobar

Scatena

2015

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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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Section: Discusión Las Características De Las Semillas Deunclassified