Title:	Análise estrutural e micromorfológica da lâmina foliar de populações de Guadua Kunth (Poaceae: Bambusoideae: Guaduinae) ocorrentes no Brasil
Authors:	Cunha, Jéssica Maura
Orientador(es)::	Ribeiro, Dalva Graciano
Assunto::	Anatomia foliar Bambu - análise Morfologia vegetal Taxonomia vegetal
Issue Date:	9-Oct-2017
Data de defesa::	26-Jan-2017
Citation:	CUNHA, Jéssica Maura. Análise estrutural e micromorfológica da lâmina foliar de populações de Guadua Kunth (Poaceae: Bambusoideae: Guaduinae) ocorrentes no Brasil. 2017. 72 f., il. Dissertação (Mestrado em Botânica)—Universidade de Brasília, Brasília, 2017.
Abstract:	Bambusoideae comprises the "true bamboos" and their species are distributed in three tribes: Bambuseae, Olyreae and Arundinarieae. Bambuseae is cited as one of the most important tribes, due to its economic, ecological and cultural applicability. In Brazil, there are approximately 21 species of Guadua, and in the Central West region about nine species are cited, however, little is known about the bamboo populations occurring in this region. The leaf anatomy of lignified bamboos is also little known, especially in relation to species collected in Brazil. Since traditional identification is primarily based on morphological characters of flowers, and in these bamboos flowers are rarely available, this fact becomes a limiting factor for taxonomic studies. Thus, leaf morphoanatomy represents an important tool to aid the characterization and taxonomy of the group. The present study sought to analyze the aspects of the foliar anatomy of ten populations of Guadua Kunth in order to characterize them and contribute to the delimitation of the genus. The leaf samples were collected in different locations and stored in 70% ethanol + 50% glycerin. For paradermic sections portions of the leaf blade were submitted to the Franklin solution adapted; stained in methylene blue solution with boric acid. For micromorphological analyzes the leaf fragments followed the usual methodology for scanning electron microscopy, and for the cross sections were made freehand in the median region of the collected leaves, then clarified with sodium hypochlorite and submitted to double staining with astra blue and safranin. All the permanent blades were mounted on a blade and cover sheet using synthetic resin. The anatomical descriptions followed according to Metcalfe (1960), Ellis (1976; 1979), Graciano-Ribeiro et al. (2006) and Santos et al. (2010). The characterization of the leaf blade showed similarities between the populations of Guadua studied here with other populations of Guadua analyzed by other authors. In addition, the analyzes revealed novelties on the anatomical organization of the leaves of the species currently accepted for Guadua, such as: absence of microhairs in G. magna and G. aff. magna, absence of papillae G. magna, G. aff. magna and G. virgata, observed in a paradermic sections. In cross section we have as main differentials the absence of fusoid cells in G. chacoensis and G. paniculata, and the presence of central vein with simple vascular system only in G. paniculata. These differential characteristics observed in the populations both in this study and in other authors, demonstrate the importance of studies with leaf anatomy for all species of the genus, since they are still little studied with this approach.
metadata.dc.description.unidade:	Instituto de Ciências Biológicas (IB) Departamento de Botânica (IB BOT)
Description:	Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Botânica, 2017.
metadata.dc.description.ppg:	Programa de Pós-Graduação em Botânica
Licença::	A concessão da licença deste item refere-se ao termo de autorização impresso assinado pelo autor com as seguintes condições: Na qualidade de titular dos direitos de autor da publicação, autorizo a Universidade de Brasília e o IBICT a disponibilizar por meio dos sites www.bce.unb.br, www.ibict.br, http://hercules.vtls.com/cgi-bin/ndltd/chameleon?lng=pt&skin=ndltd sem ressarcimento dos direitos autorais, de acordo com a Lei nº 9610/98, o texto integral da obra disponibilizada, conforme permissões assinaladas, para fins de leitura, impressão e/ou download, a título de divulgação da produção científica brasileira, a partir desta data.
DOI:	http://dx.doi.org/10.26512/2017.01.D.24783
Appears in Collections:	Teses, dissertações e produtos pós-doutorado

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.