ANALYSIS OF THE LUMINOSITY ON THE ANATOMICAL ASPECTS OF<i> Theobroma speciosum </i>WILLD. EX SPRENG. (MALVACEAE) LEAVES
DOI:
https://doi.org/10.5902/1980509828634Keywords:
Cacauhy, Amazonia, Mesophyll.Abstract
The anatomical knowledge of species of the Theobroma genus is important for the establishment and maintenance of germplasm collections, considering agronomic and phytopathological studies, and breeding programs. This study aimed to characterize the anatomy of Theobroma speciosum leaves, recording the structural differences observed between sun and shade leaves. Theobroma speciosum leaves were collected at Juruena National Park and in pastures in the rural municipality of Alta Floresta – MT. We analyzed the thickness of the leaf mesophyll, palisade and spongy parenchyma, midvein and vascular bundle. Cluster analysis was performed using the Hierarchical UPGMA method, based on the standardized mean Euclidean distance. Were observed glandular trichomes, claviforme type and sessile stellate, the epidermis is uniseriate in cross section, the mesophyll is dorsiventral, however the parenchymas are little different. Collateral vascular bundles are dispersed in the mesophyll, forming sheaths that extend up to the epidermis. The midvein, in cross section, has a biconvex shape, with closed vascular system surrounded by sclerenchymatic sheath. The constitution of the leaves mesophyll varied with the environment. Plants exposed to full sunlight showed longer cells in the palisade parenchyma, spongy parenchyma with more layers and higher quantity of trichomes, whereas shade leaves showed cells with many mesophyll intercellular spaces. The dendrogram showed the formation of two distinct groups: group I comprises the plants of the Park and group II pasture plants. The clustering showed significant anatomical changes caused by variations of light intensity on leaves, which revealed a large adaptive capacity of Theobroma speciosum.Downloads
References
AGUIAR, T. V. et al. Anatquant: software de análises quantitativas para estudos em anatomia vegetal. Planta Daninha, Viçosa, MG, v. 25, n. 4, p. 649-659, 2007.
BECK, C. B. An introduction to plant structure and development plant. Anatomy for the Twenty-First Century. 2nd ed. New York: Cambridge University Press, 2010. 150 p.
BOEGER, M. R. T.; WISNIEWSKI, C. Comparação da morfologia foliar de espécies arbóreas de três estádios sucessionais distintos de floresta ombrófila densa (Floresta Atlântica) no Sul do Brasil. Revista Brasileira de Botânica, São Paulo, v. 26, n. 1, p. 61-72, 2003.
BOSABALIDIS, A. M.; KOFIDIS, G. Comparative effects of drought stress on leaf anatomy of two olive Cultivars. Plant Science, Davis, v. 163, p. 375-379, 2002.
CRUZ, C. D. Programa genes: biometria. Viçosa: Ed. da UFV, 2006. 220 p.
CRUZ, C. D.; REGAZZI, A. J. Divergência genética. In: CRUZ, C. D.; REGAZZI, A. J. (Ed.). Modelos biométricos aplicados ao melhoramento genético. Viçosa: Ed. da UFV, 2001. p. 287-324.
CUATRECASAS, J. Cacao and its allies: a taxonomic revision of the genus Theobroma. Contributions from the United State National Herbarium, Nova Iorque, v. 35, p. 579-614, 1964.
CUTTER, E. G. Plant anatomy: cells and tissues part I. London: William Clowes and Sons, 1978. p. 315-319.
DICKISON, W. C. Integrative Pant Anatomy. Burlington: Academic Press, 2000. 180 p.
ESCHRICH W. Funktionelle pflanzenantomie. Berlin: Springer-Verlag, 1995. 250 p.
FEARNSIDE, P. M. Soybean cultivation as a threat to the environment in Brazil. Environmental Conservation, Cambridge, v. 28, p. 23-38, 2001.
FERREIRA, D. F. Sisvar: a computer statistical analysis system. Ciência &Agrotecnologia, Lavras, v. 35, n. 6, p. 1039-1042, 2011.
FERREIRA, J. C. V. Mato Grosso e seus Municípios. Cuiabá: Secretaria de Estado da Educação, 2001. 365 p.
FRANCESCHI, V. R.; NAKATA, P. A. Calcium oxalate in plants: Formation and function. Annual Review of Plant Biology, Palo Alto. v. 56, p. 61-71, 2005.
GARCIA, T. B. Anatomia dos órgãos vegetativos aéreos de três espécies de Theobroma L. (Malvaceae) com ênfase nas estruturas secretoras: estrutura e histoquímica. 2012. 88 f. Dissertação (Mestrado em Ciências Biológicas – Botânica Tropical) - Universidade Federal Rural da Amazônia, Museu Paraense Emílio Goeldi, Belém, 2012.
GOMES, D. M. S. Anatomia foliar de Gomidesia spectabilis (DC) Berg. E G. nitida (Vell.) Legr. (Myrtaceae). Dissertação (Mestrado) - Universidade Federal do Rio de Janeiro, Rio de Janeiro, 1992. 66 p.
JOHANSEN, D. A. Plant microtechnique. New York: MacGraw-Hill, 1940. 170 p.
KAISER, E. Verfahren zur Herstellung einer tadellosen Glycerin-Gelatine. Botanisch Zentralb, Berlin, v. 18, p. 25-26, 1980.
KUBITZKI, K.; BAYER, C. The families and genera of vascular plants. V. Flowering Plants. Dicotyledons. Malvales, Capparales and Non-betalain Caryophallales. Berlin: Springer, 2003. 550 p.
LARCHER, W. Ecofisiologia vegetal. São Paulo: Rima, 2000. 213 p.
LAURANCE, W. F.; VASCONCELOS, H. L. Consequências ecológicas da fragmentação florestal na amazônia. Oecologia Brasiliensis, Rio de Janeiro, v. 13, n. 3, p. 434-451, 2009.
LORENZI, H. Árvores Brasileiras: manual de identificação e cultivo de plantas arbóreas nativas do Brasil. Nova Odessa: Instituto Plantarum, 2000. 190 p.
LÜTTGE, U. Physiological ecology of tropical plants. Berlin: Springer-Verlag, 1997. 130 p.
MAJEROWICZ, N. Fotossíntese. In: KERBAUY, G. B. Fisiologia vegetal. Rio de Janeiro: Guanabara Koogan, 2004. p. 200-233.
MARTINI, M. H. et al. Localization of the cotyledon reserves of Theobroma grandiflorum (Willd. ex Spreng.) K. Schum., Theobroma subincanum Mart., Theobroma bicolor Bonpl. and their analogies with Theobroma cacao L. Revista Brasileira de Botânica, São Paulo, v. 31, n. 1, p. 147-154, 2008.
NAKAYAMA, L. H. I.; SOARES, M. K. M.; APPEZZATO-DA-GLÓRIA, B. Contribuição ao estudo anatômico da folha e do caule do cacaueiro (Theobroma cacao L.). Scientia Agricola, Piracicaba. v. 53, n. 1, p. 44-52, 1996.
PARQUE NACIONAL DO JURUENA. Parque Nacional do Juruena. [2013]. Disponível em: <http://www.parquenacionaldojuruena.com.br>. Acesso em: 20 ago. 2013.
SANTOS, S. F. Estrutura e histoquímica de sementes do gênero Theobroma L. (Sterculiaceae). 2003. 77 f. Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Florianópolis, 2003.
SCHLICHTING C. D. The evolution of phenotypic plasticity in plants. Annual Review of Ecology & Systematics, Palo Alto, v. 17, p. 667-693, 1986.
SILVA, L. M.; ALQUINI, Y.; CAVALLET, V. J. Inter-relações entre a anatomia vegetal e a produção vegetal. Acta Botânica Brasílica, Belo Horizonte. v. 19, n.1, p. 183-194, 2005.
SULTAN S. E. Phenotypic plasticity for plant development, function, and life-history. Trends in Plant Science, Londres, v. 5, p. 537-542, 2000.
TAIZ, L.; ZEIGER, E. Fisiologia vegetal. 3. ed. Porto Alegre: Artmed, 2004. 245 p.
WALDHOFF, D.; FURCH, B. Leaf morphology and anatomy in eleven tree species from Central Amazonian floodplains (Brazil). Revista Amazoniana, Manaus. v. 17, n. 1, p. 79-94, 2002.