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      Anatomia comparativa de folhas e caules de Axonopus scoparius (Flügge) Kuhlm. e Axonopus fissifolius (Raddi) Kuhlm. (Poaceae) Translated title: Comparative anatomy of leaves and stems of Axonopus scoparius (Flügge) Kuhlm. and Axonopus fissifolius (Raddi) Kuhlm. (Poaceae)

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          Abstract

          Muitas espécies do gênero Axonopus são utilizadas como forrageiras de corte e pastejo no sul do Brasil. Contudo, pouco é conhecido sobre a anatomia dessas plantas. No presente trabalho foram descritas as características estruturais de folhas e caules das espécies Axonopus scoparius (Flügge) Kuhlm. e A. fissifolius (Raddi) Kuhlm. As amostras foram coletadas em Itajaí, SC e processadas para estudo histológico ao microscópio de luz e eletrônico de varredura. A estrutura Kranz foi evidenciada em ambas espécies. As espécies distinguem-se pela presença de células buliformes na epiderme da face adaxial da lâmina foliar de A. fissifolius e pela ausência destas células em A. scoparius e pela presença de tricomas longos, unicelulares na epiderme da face adaxial da lâmina foliar de A. scoparius e pela ausência destas estruturas em A. fissifolius.

          Translated abstract

          Several species in the genus Axonopus are commonly used as forage milk cattle to feed in southern Brazil. However, little is known about the anatomy of these plants. In this work, the structural features of leaves and stems of Axonopus scoparius (Flügge) Kuhlm. and A. fissifolius (Raddi) Kuhlm. are described. The samples were collected in Itajaí, SC and processed for light and scanning electron microscopy histological studies. The Kranz structure was found in both species. The speciescould be distinguished by the presence of bulliform cells in the leaf blade upper epidermis of A. fissifolius and the absence of these cells in A. scoparius and by the presence of unicellular macrohairs in the leaf blade upper epidermis of A. scoparius and the absence of these strutures in A. fissifolius.

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          Most cited references32

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          Plant microtechnique

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            Plant anatomy

            A. FAHN (1990)
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              Development of the Stomatal Complex as a Taxonomic Character in the Monocotyledons

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                Author and article information

                Journal
                rbb
                Brazilian Journal of Botany
                Braz. J. Bot.
                Sociedade Botânica de São Paulo (São Paulo, SP, Brazil )
                0100-8404
                1806-9959
                June 2003
                : 26
                : 2
                : 185-192
                Affiliations
                [01] Pato Branco PR orgnameCentro Federal de Educação Tecnológica do Paraná orgdiv1Unidade de Pato Branco Brasil
                [02] Curitiba PR orgnameUniversidade Federal do Paraná orgdiv1Departamento de Botânica Brasil
                Article
                S0100-84042003000200006 S0100-8404(03)02600206
                832539d3-0404-4639-a2f2-e0778cf5f84f

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

                History
                : 07 November 2001
                : 12 February 2003
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 33, Pages: 8
                Product

                SciELO Brazil

                Self URI: Texto completo somente em PDF (PT)

                Axonopus scoparius,forage,Kranz,plant anatomy,Anatomia vegetal,Axonopus fissifolius,forrageira

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