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      Anatomia do lenho de oito espécies de lianas da família Leguminosae ocorrentes na Floresta Atlântica Translated title: Wood anatomy of eight liana species of Leguminosae family from Atlantic Rain Forest

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          Abstract

          Lianas são importantes componentes estruturais das florestas tropicais, apesar disso a anatomia destes vegetais é pouco estudada. A família Leguminosae é relatada como a segunda maior em número de espécies de lianas, contudo pouco se conhece da diversidade anatômica das lianas desta família. O presente estudo descreveu e analisou a anatomia do lenho de oito espécies de lianas da família Leguminosae, ocorrentes no Parque Nacional do Itatiaia, localizado no Estado do Rio de Janeiro, região Sudeste do Brasil, local inserido no bioma Floresta Atlântica. As espécies apresentaram características comuns ao hábito liana, como: elementos de vaso com diâmetro elevado, com duas categorias de diâmetro; e maior proporção de parênquima axial em comparação às fibras. Quatro espécies do gênero Senegalia apresentaram variações cambiais produzidas por um único câmbio, normal em produto mas anormal em conformação. A anatomia do lenho das espécies estudadas é muito semelhante por compartilharem o mesmo hábito e pertencerem à mesma família. Apesar disso, as oito espécies estudadas puderam ser diferenciadas. As espécies com variações cambiais e Dalbergia frutescens são facilmente diferenciadas das demais. Contudo Senegalia tenuifolia, Piptadenia micracantha e Piptadenia adiantoides necessitam ser examinadas com muita cautela para identificá-las exclusivamente pela anatomia do lenho.

          Translated abstract

          Lianas are important structural component of tropical forests and even though the anatomy of these plants is poorly studied. Leguminosae family is reported as the second larger family in number of liana species, but little is know about the anatomical diversity of lianas from this family. The present study described and analyzed the wood anatomy of eight liana species of Leguminosae family, from Parque Nacional do Itatiaia, located in Rio de Janeiro State, Southeast region of Brazil and included in Atlantic Rain Forest Biome. The species show common features with the liana habit, as: wide vessels, vessel dimorphism, and high proportion of parenchyma when compared with fibers. Four species of Senegalia genus showed cambial variants made by a single cambium, normal in products but abnormal in conformation. The studied species have similar wood anatomy, many of which are because they belong to the same family and share the same habit. Nevertheless, the eight species studied could be distinguished. The species with cambial variants and Dalbergia frutescens are easy distinguished from the others. However Senegalia tenuifolia, Piptadenia micracantha and Piptadenia adiantoides require much wariness examination to identify the species exclusively by wood anatomical features.

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          Plant microtechnique

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              Bemerkungen zur Doppel färburng Astrablau-Safranin

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                Author and article information

                Journal
                abb
                Acta Botanica Brasilica
                Acta Bot. Bras.
                Sociedade Botânica do Brasil (Alta Floresta, MT, Brazil )
                0102-3306
                1677-941X
                June 2008
                : 22
                : 2
                : 465-480
                Affiliations
                [01] Rio de Janeiro RJ orgnameInstituto de Pesquisas Jardim Botânico do Rio de Janeiro orgdiv1Programa Mata Atlântica Brasil
                Article
                S0102-33062008000200015 S0102-3306(08)02200215
                10.1590/S0102-33062008000200015
                08b6955f-037e-4b0c-8cee-4a945fdcfd77

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 14 February 2007
                : 05 July 2007
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 34, Pages: 16
                Product

                SciELO Brazil


                anatomia da madeira,Leguminosae,Atlantic Rain Forest,lianas,wood anatomy,Mata Atlântica

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