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Ciência Florestal
Article . 2013 . Peer-reviewed
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Ciência Florestal
Article
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Anatomia da madeira de <i>Phyllanthus sellowianus </i>Müll. Arg. (Phyllanthaceae)

Authors: Luciano Denardi; Rômulo Trevisan; Edison Rogério Perrando; Fabrício Jacques Sutili; Talita Baldin; José Newton Cardoso Marchiori;

Anatomia da madeira de <i>Phyllanthus sellowianus </i>Müll. Arg. (Phyllanthaceae)

Abstract

http://dx.doi.org/10.5902/198050989294O presente estudo teve por objetivos descrever anatomicamente o lenho de Phyllanthus sellowianus Müll. Arg. (Phyllanthaceae), bem como investigar caracteres anatômicos associados à flexibilidade de seus caules, característica desejável para obras de bioengenharia em taludes fluviais. Pertencente ao grupo das reófilas, e com até 3 metros de altura, a espécie ocorre naturalmente no sul do Brasil, Uruguai e Argentina. As exsicatas e as amostras de madeira, provenientes de um exemplar localizado no município de Santa Maria-RS (Brasil), foram acondicionadas no Herbário e Xiloteca da Universidade Federal de Santa Maria, sob os números HDCF 5587 e 5588. Para a confecção das lâminas histológicas de madeira, seguiu-se a técnica padrão. Para a maceração, utilizou-se o método de Jeffrey. A descrição anatômica da madeira seguiu as recomendações do IAWA Committee (1989). A análise microscópica do lenho revelou a presença de poros com pequeno diâmetro (< 60 μm), dispostos em múltiplos radiais de 2 – 4 unidades, e de placas de perfuração simples, oblíquas; parênquima axial ausente, raios heterogêneos, com 1 – 3 células de largura, e fibras gelatinosas. A ausência de parênquima axial e de tubos laticíferos é compatível com o grupo das Phyllanthaceae. A presença de células perfuradas de raio constitui-se, possivelmente, no principal elemento anatômico para a diferenciação de P. sellowianus em relação às demais espécies do gênero. A presença abundante de fibras gelatinosas é seguramente uma das principais características anatômicas relacionadas à elevada flexibilidade de seu caule.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
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