Maria Sílvia de Mendonça
Federal University of Amazonas
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Featured researches published by Maria Sílvia de Mendonça.
Acta Amazonica | 2004
Maria da Glória Gonçalves de Melo; Maria Sílvia de Mendonça; Ângela Maria da Silva Mendes
Species from the leguminosae family are used in Agroforestry Systems. Their successful implementation depends on basic information about the species that constitute each extract. Hymenaea intermedia var. adenotricha species from the leguminosae family with potential to be used in agroforestry in the Amazon region. The seeds were harvested from plants found in the natural forest of Petroleum Province Urucu Harbor. The studies were carried out under laboratory and nursery conditions at the Agrarian Sciences College of the Amazonas University. H. intermedia var. adenotricha seeds are eurispermic, the tegument showed stone consistency when dehydrated and soft consistency when hydrated. The seed tegument showed four cellular strata, the first layer was formed by thin cells organized in a palissade. The embryon axis was yellow green. The cotyledons were fleshy with a hidden radicle. The plumule is rudimentary. The seed germination is phanero-epigeal, showing curved body during its emergency. The seedling showed tap-root root system, the axial primary root was woody grooved and glabrous. The secondary roots were resinous, short, slightly ramified but interlaced and showed no nodules. The protophyll exhibited compound asymmetric leaflets which were slightly falcade and oblonge. The first metaphyll presented compound asymmetric leaflets with slightly falcade-oblonge shape.
Acta Amazonica | 2006
Mahedy Araújo Bastos Passos; Maria Sílvia de Mendonça
Anatomic data on the epidermis leaf segments from Mauritia flexuosa L. f. (Arecaceae) are presented on three phases of development. Leaf segments were analyzed on the all extension of leaf. Both adaxial and abaxial epidermal cells stand out with sinuous walls, rectangular and longitudinally oriented to the foliar axis with the marked presence of spherical- spiny silica bodies. The back epidermal cells of both surfaces present straight walls and vary among short, long and round. Trichomes are unicellular, simple, long, with a wider base. Leaf segments from M. flexuosa are anphistomatic with tetracitic type stomats. In a cross-section the leaf skin is unistratified with a broad substimatic chamber. The findings obtained showed no significant variations among the three phases of development and the characters that were found appear to be common on other palm trees.
Acta Botanica Brasilica | 2002
Madalena Otaviano Aguiar; Maria Sílvia de Mendonça
Euterpe precatoria is a palm tree widespread in Amazon basin, in terra firme and varzea sites. The fruit is used for the production of Acai wine, and the sten apex for the production of palm hearts (palmito), which are an important food source. Different stages of germinated acai seed were studied in longitudinal and transversal sections, under a optical microscope. The embryonic axis is curved. In the early stages of germination, the integument is displaced, forming the cotyledonal bud and the future plant. The radicle emerges first, with a well developed root cap and develops faster than the plumula. The process of formation of the first leaves is continuous. As the embryo is developing, the distal region increases in size, forming the haustorium and occupying the place of the endosperm.
Acta Amazonica | 2014
Silvia Patricia Flores Vásquez; Maria Sílvia de Mendonça; Sandra do Nascimento Noda
The utilization of medicinal plants is a common practice among human populations. The present work aimed to carry out an ethno botanical survey to assess plant knowledge and use of medicinal plants by local people of four riverine communities at the municipality of Manacapuru. We collected information from one hundred and sixty-four local dwellers, selected at random, using semi-structured interviews, participant observations and guided tours. Health problems cited were ranked according to the International Statistic Classification of Diseases and Health Related Problems (CID-10) and agreement indexes were used to identify the main uses of each species. One hundred seventy-one medicinal plants were identified belonging to 65 families. The Lamiaceae (14 species), Asteraceae (9 species), Fabaceae and Euphorbiaceae (8 species) were to most common families. The most cited species were Mentha arvensis (mint), Ruta graveolens (common rue) and Citrus sinensis (sweet orange). Leaves were the most utilized plant part and leaf decoction the most common procedure used for preparing medicines. The most common problems cited were digestive tract ailments, respiratory system illnesses and problems with unclassified symptoms. Plants with agreement indexes greater than 25% were Plectranthus amboinicus, Chenopodium ambrosioides, Citrus aurantiifolia, Acmella oleracea, Plectranthus barbatus, Mentha arvensis, Citrus sinensis, Lippia origanoides, Lippia alba, Cymbopogon citratus and Ruta graveolens. These results confirm that populations living in Manacapuru still use medicinal plants as one of the ways of treating their most frequent ailments.
Revista Brasileira De Sementes | 2008
Maria Sílvia de Mendonça; Andréia Barroncas de Oliveira; Maria Gracimar Pacheco de Araújo; Lídia Medina Araújo
The morpho-anatomical characterization of fruits and seeds of Oenocarpus minor Mart. Ripe fruits were collected from several individuals, in dense forest disturbed in the municipality of Itacoatiara, State of Amazonas. Measurements of size and weight of the fruit and seed were taken as well as the humidity degree of the seed. The anatomical study was performed by the method of paraffin inclusion. An additional study of the mineral salts analysis of the fruit was also performed by the method of acid digestion. The fruit is sessile, one-seeded, varying from globular-ovoid to ellipsoid, with thin, coriaceous and glabrous epicarp, formed by an epidermis of cutinized cells and subepidermal region with tanniferous cells of different shapes. The mesocarp is fibro-fleshy and oleaginous, consisting of tanniferous idioblasts frequently grouped among parenchyma cells. Fibrovascular bundles are located between the mesocarp and the endocarp. Fibrous endocarp, delimited by the locule epidermis composed by only one layer of sclerified cells. Seed from globular to ellipsoid in shape, with thin tegument made of several layers of tanniferous cells; with solid and homogeneous endosperm, formed by long cells with thick walls. Capitate embryo. The analysis of the mineral components of the pulp presented 0.67mg/g Ca, 0.43mg/g Mg, 0.08mg/g Fe, 0.02mg/g Cu, 9.5µg/g Zn and 0.02mg/g Mn.
Acta Amazonica | 2006
Christinny Giselly Bacelar-Lima; Maria Sílvia de Mendonça; Tereza Cristina T. S. Barbosa
Morphological descriptions are provided for inflorescences of pistillate and staminate flowers of a population of Astrocaryum aculeatum Meyer located on the campus of the Instituto Nacional de Pesquisas da Amazonia (INPA). The inflorescence is an interfoliar, panicle of spikelets, with a peduncle, and medium size of 146 ± 20.3 cm in length. Woody, thorny bracts are present on the entire external surface, protecting the inflorescence. Each inflorescence had approximately 375 ± 49.5 rachillae. Each inflorescence was estimated to have about 500 to 1.200 pistillate flowers and 190.000 to 260.000 staminate flowers. Staminate flowers varied in colouration from wine to cream and intermediate mixes of wine and cream.
Acta Botanica Brasilica | 2010
Andréia Barroncas de Oliveira; Maria Sílvia de Mendonça; Maria Gracimar Pacheco de Araújo
The anatomy of the embryo and the initial germination phase of O. minor seeds are examined here. Ripe fruits were collected from five individuals, the pulp removed, and the seeds sown in beds with sandy substrate in a greenhouse with 50% shade. Germination follow-up was made by collecting different stages of development. The anatomical study done according to usual techniques of light microscopy. The embryo is capitate and occupies a central position in the basal region of the seed. The embryogenic axis is located in the proximal region in a position that is oblique to the cotyledon axis. The cotyledon is formed by parenchymatous, procambial and protodermic tissue. The vascular bundles lie along the peripheral zone of the distal region to the embryogenicaxis. After 14 days, the primary rootemerges; after 21 days, the first cotyledon sheath and after 35 days, the second cotyledon sheath, and the seedling emerges above the substrate. Germination is of the ligule adjacent type.
Acta Amazonica | 1998
Maria Gracimar Pacheco de Araújo; Maria Sílvia de Mendonça
Aldina heterophylla (Leguminosae: Papilionoideae) is a species commonly found in campinas (dwarf forest on white sand) in central Amazonia. Some of its morphological characters vary according to the enviroment. It varies in size in the various campinas under different conditions of soil, light and temperature. The present study was made with the intention of understanding the amount of seleromorphism in different environmental conditions. Leaves collected under sun and shade conditions in three central Amazonia campinas (“open”, “high” and “shaded” campina), were used for histological sections and epidermal preparations for anatomical description. In general, the plants showed seleromorphism in all the environments. It is suggested that Aldina heterophylla is better adapted to the environmental conditions of “high” campina, where it showed more exuberent growth, than in “open” or “shaded” campina.
Acta Amazonica | 2014
Rolf Junior Ferreira Silva; Ana Cristina Andrade de Aguiar-Dias; Maria Sílvia de Mendonça
Piper L. (Piperaceae) e monofiletico, com especies de dificil distincao taxonomica, sendo necessarios ferramentas que auxiliem a identificacao interespecifica. Os objetivos do trabalho foram descrever os macropadroes e caracterizar in situ a composicao quimica dos cristais caulinares e foliares de Piper arboreum Aubl. var. arboreum, P. callosum Ruiz & Pav. e P. tuberculatum Jacq., visando avaliar o uso dos cristais para a separacao interespecifica. Para tanto, amostras foram submetidas a analise em microscopias de luz e eletronica de varredura, microanalises espectroscopicas de raios-X por dispersao de energia e testes histoquimicos. Foram observados cristais prismaticos cuneiformes, tabulares, cubicos e bipiramidais; rafides; estiloides; drusas de cristais em bloco; rosetas cristalinas de estiloides e concrescencias cristalinas. Foram descritos 15 macropadroes cristalinos reunidos em tres categorias. Os cristais foram classificados quimicamente como: puros de oxalato de calcio e misturas entre oxalatos e sulfatos e entre oxalatos, sulfatos e silica. Rosetas cristalinas, concrescencias cristalinas silicificadas e 14 dos 15 macropadroes cristalinos descritos sao registros ineditos para inclusoes biominerais de Piper e Piperaceae. Os macropadroes cristalinos caulinares e foliares observados sao constitutivos e uteis a separacao interespecifica das especies estudadas. Ademais, os cristais desempenham funcoes relevantes para a autoecologia dos taxa de Piper analisados.
Acta Amazonica | 1992
Maria Sílvia de Mendonça
Leaf and bark anatomy were studied in Manihot glaziovii Mull. Arg. as part of a series of studies of latex producing plante. The species in question may exceed ten meters in height. Emphasis was given to determining the distribution of laticiferous vessels, which reach their greatest density in the live bark from which latex is extracted. This species is structurally very similar to Manihot caerulescens (studied earlier by the author) and to Hevea brasiliensis Mull. Arg.