Consulta: subjectFacets:"Forest species"
Registros recuperados: 24
Data/hora: 12/06/2024 14:51:30

Ensaios de procedências de Acacia mangium Willd., no planalto do Tapajós, Pará.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: YARED, J. A. G.; VIANA, L. M.; KANASHIRO, M.
bitstream/item/42022/1/Boletim-Pesquisa-107-CPATU.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Especie florestal; Adaptação; Campo Experimental de Belterra; Brasil; Forest species; Growth; Adaptation.; Crescimento.; Acacia mangium; Amazonia.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381088

Associação de Perisporiopsis melioloides com folhas de breu-sucuruba (Trattinnickia burserifolia)
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Santos, Álvaro Figueredo dos; Bezerra, José Luiz; Neves, Edinelson Jsosé Maciel; Araújo, José Cristino Abreu.
Relata-se, pela primeira vez, a ocorrência de Perisporiopsis melioloides em folhas em breu-sucuruba (Trattinnickia burserifolia), em Manaus-AM.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Região Amazônica; Espécie Florestal; Doença Amazon region; Forest species; Disease.
Ano: 2004
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1599

Organic carbon contents of three tree species in different spacing
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Behling, Alexandre; Sanquetta, Carlos Roberto; Caron, Braulio Otomar; Schimidt, Denise; Elli, Elvis Felipe; Corte, Ana Paula Dalla.
This study aimed to evaluate the content of organic carbon in plant parts (leaves, wood, twigs and bark) of forest species Acacia mearnsii De Wild, Eucalyptus grandis Hill and Mimosa scabrella Benth, under different spacing between trees (2.0 m x 1.0 m, 2.0 m x 1.5 m, 3.0x1.0 m and 3.0 m x 1.5 m), one year after planting. It was also aimed to verify if the conversion factor of 50% can be applied. To determine the organic carbon it was used a carbon analyzer(C-144). The carbon content varied depending on the species, spacing and the part of the plant component used. It was observed that the factors: species, spacing, and parts of the plant are not independent. So, the carbon content measurements should be determined for each species and for each biomass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Biomass; Planting densities Recursos Florestais; Engenharia Florestal; Manejo Espécies florestais; Biomassa; Densidades de plantio.
Ano: 2014
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/562

Teste de condutividade elétrica em sementes de Jacaranda micranta
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Souza, Gabriela Fernanda; Garlet, Juliana; Delazeri, Pricila.
O objetivo deste trabalho foi avaliar a qualidade fisiológica de lotes de sementes de Jacaranda micranta Cham., pelo teste de condutividade elétrica. Foram utilizados três lotes de sementes, armazenados por diferentes períodos. O teste de condutividade elétrica foi realizado em diferentes quantidades de sementes e água deionizada para embebição, sendo depois associados a dados de germinação e vigor. Foi observado que quanto maior o tempo de armazenamento das sementes, maior seu valor de condutividade elétrica e, consequentemente, menor seu vigor de germinação. Verificou-se também que as diferentes quantidades de sementes e de volume de água na embebição não apresentam diferença significativa. Assim, recomenda-se a utilização de 50 sementes em 75 mL de água...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sementes Florestais Teste de vigor; Espécies florestais; Caroba; Qualidade fisiológica de sementes Vigor tests; Forest species; Caroba; Physiological quality of seeds.
Ano: 2016
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/894

Use of vermicompost as a substrate for the production of Eucalyptus grandis and Corymbia citriodora seedlings
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Steffen, Gerusa Pauli Kist; Antoniolli, Zaida Inês; Steffen, Ricardo Bemfica; Schiedeck, Gustavo.
The aim of this work was to evaluate the vermicompost efficiency in the seedlings of two eucalyptus species production. The experiment was developed in greenhouse conditions, substrate constituted by different vermicompost proportions and peat for the E. grandis and C. citriodora seedling production. The experimental design was entirely casualized with seven treatments and eight repetitions. After 100 days of experiment were evaluated: seedling height, fresh and dry biomass of aerial part, root volume, dry biomass of the root and Dickson quality index (DQI). The treatment constituted by 80% vermicompost and 20% peat presented the highest results in height, root volume and dry mass of the aerial part and roots. For the species C. citriodora was observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Organic substrate; Eucalyptus Essências florestais; Substrato orgânico; Eucalipto.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/266

Effect of Shadeness Over Chlorophyll Level and Initial Growth of Cariniana legalis
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Rego, Gizelda Maia; Possamai, Edilberto.
Toevaluate the effects of periods of shadeness over the initial growth and concentrations of chlorophyll in Cariniana legalis (Mart.) Kuntze seedlings, an experiment was installed in the research nursery of Embrapa Florestas, at Colombo/PR, Brazil. It was utilized randomized blocks design with five treatments and four replications. The treatments established were: 100% (entire light); 70%, 64%, 44% and 34% of sun radiation. Monitoring of height and diameter were made under intervals of 30 days, from 60o to 180o day after emergency (DAE). Air total dry matter weight of roots, leaf area, chlorophyll a, chlorophyll b and total chlorophyll were measured 180 days after emergency. FAR (Photosynthetic Active Radiation) of 63, 07% led to the best seedling growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Seedling production; Luminosity; Solar radiation Espécie florestal; Plântulas; Mudas; Luminosidade; Radiação solar.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/210

STRUCTURAL EVALUATION OF DAMAGE CAUSED BY HERBICIDE CLOMAZONE IN LEAVES OF ARBORESCENT SPECIES NATIVE TO BRAZIL
Provedor de dados: Planta Daninha
Autores: CABRAL,C.M.; SANTOS,J.B.; FERREIRA,E.A.; COSTA,S.S.D.; DALVI,V.C.; FRANCINO,D.M.T.
ABSTRACT Herbicide clomazone is highly soluble in water, which increases the risk of leaching, resulting in contamination of sources of groundwater and waterways, affecting non-target organisms, with possible degradation of riparian areas. The objective of this work was to investigate the possible anatomical modifications of the leaf tissue of twelve arborescent species native to Brazil grown in soil contaminated by clomazone, in order to microscopically characterize leaf damage caused by the herbicide, and investigate whether the structural damage precedes visible damage. Through micro morphometrics, the thickness and the area occupied by the tissues were measured in a cross section of the leaves of the forest species: adaxial and abaxial epidermis,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inga marginata; Handroanthus serratifolius; Forest species; Phytoremediation; Leaf anatomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100230

Water stress and temperature on germination and vigor of Handroanthus impetiginosus (Mart. ex DC)
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Santos,Paulo C. S.; Benedito,Clarisse P.; Alves,Tatianne R. C.; Paiva,Emanoela P.; Sousa,Erivanessa C.; Freires,Afonso L. A.
ABSTRACT Water availability and temperature are among the main abiotic factors that influence seed germination and vigor, since they act directly on biochemical and physiological processes, which result in the production of the primary root. The objective of this study was to verify the effects of stress on germination and vigor of H. impetiginosus (‘ipê-roxo’) seeds under different temperatures and osmotic agents. The experimental design was completely randomized, in a 6 x 2 factorial scheme (osmotic potentials x temperatures) with four replicates of 25 seeds for each osmotic agent. In order to simulate water stress, polyethylene glycol (PEG 6000) and mannitol solutions were used and distilled water was used as control. Osmotic potentials of 0, -0.2,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Forest species; Abiotic stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500349

Light intensity and type of container on producing Cassia grandis L. f. seedlings
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Leal,Caio C. P.; Torres,Salvador B.; Freitas,Rômulo M. O. de; Nogueira,Narjara W.; Farias,Raul M. de.
ABSTRACTThis study aimed to determine the effects of the luminosity and type of container on producing Cassia grandis seedlings. Thus, in a substrate composed by topsoil + wood powder (1:1) the seedlings were grown into plastic tubets containing 0.3 dm3 of such substrate, or into plastic pots containing 1.0 dm3 of the same substrate, and subjected to 50 and 25% shading or full sunlight. The assessments were performed every two weeks by measuring plant height and stem diameter, during eight weeks period. At the end of this period, the leaf area, dry mass of shoots and roots, the ratio between height of plant/diameter of stem, and the Dickson quality index were also assessed. The experiment was carried out in a completely randomized design with treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pink shower cassia; Forest species; Forest species seeds; Seedling growth; Shading.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001000939

‘Jurema-de-embira’ seed germination under water stress and at different temperatures
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Nogueira,Narjara W.; Torres,Salvador B.; Freitas,Rômulo M. O. de; Castro,Thiago H. da S.; Sá,Francisco V. da S.
ABSTRACT The process of water imbibition by the seed depends on temperature and water availability, which according to the absorbed water retention capacity will determine the success of the germination process. Thus, this study aimed to investigate the effects of water stress on the germination and vigor of ‘jurema-de-embira’ seeds under different temperatures. The experimental design was completely randomized in a 7 x 4 factorial scheme (osmotic potential and temperature) with four replicates of 25 seeds each. The osmotic potentials of 0, -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa at temperatures of 25, 30 and 35 °C and alternated of 20-30 °C, under photoperiod of 8 h, were evaluated. Germination percentage, germination speed index, shoot and root length,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mimosa ophthalmocentra Mart. ex; Benth; Fabaceae; Forest species; Caatinga; Osmotic potentials.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000400244

Germination and initial development of Simira gardneriana seedling under water stress and at different temperatures
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Oliveira,Fabrícia N. de; Oliveira,Jessica R. de; Torres,Salvador B.; Freitas,Rômulo M. O. de; Nogueira,Narjara W.
ABSTRACT The germination of seeds is affected by many factors, including water availability and temperature. This study aimed to evaluate the effects of water stress and different temperatures on germination and initial development of S. gardneriana M. R. Barbosa &amp; Peixoto seedlings. The experiment was carried out in a completely randomized design, in a 7 x 4 factorial scheme, with seven potentials (0; -0.1; -0.2; -0.3; -0.4; -0.5 and - 0.6 MPa) and four temperatures (25, 30, 35 and 20-30 °C), with four replicates of 25 seeds. The analyzed variables were germination, percentage of normal seedlings, germination speed index, seedling length (shoot and root) and dry weight (shoot and root). There is a decrease in the germination and vigor of the seeds as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubiaceae; Caatinga; Osmotic potential; Forest species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000500333

Morphophysiological responses of Ilex paraguariensis seedlings to different substrates and fertilizations
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Zavistanovicz,Thairini C.; Araujo,Maristela M.; Aimi,Suelen C.; Flores,Rejane; Berghetti,Álvaro L. P.; Deponti,Gilmar.
ABSTRACT The increasing demand for Ilex paraguariensis St. Hill (yerba mate) by-products generated the need for producing a greater quantity of seedlings and improve their quality. Thus, the objective of this work was to evaluate the efficiency of different substrates combined with base fertilization for Ilex paraguariensis seedlings, through morphophysiological parameters. The experiment was conducted in a completely randomized design, in a 5 x 3 factorial arrangement, and the treatments consisted of five substrate formulations combined with two fertilizers, and a control without fertilization, in November 2013. The I. paraguariensis seedlings produced in the substrate consisted of subsurface soil, cattle manure and charred rice hulls (2:2:1) presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yerba mate; Organic compounds; Forest species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200111

Salt stress and temperatures on the germination and initial growth of ‘jurema-de-embira’ (Mimosa ophthalmocentra) seedlings
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Nogueira,Narjara W.; Torres,Salvador B.; Freitas,Rômulo M. O. de; Santos,Paulo C. da S.; Sá,Francisco V. da S.; Leite,Moadir de S.
ABSTRACT The objective of this study was to evaluate the effects of salinity on the germination and initial growth of ‘jurema-de-embira’ (Mimosa ophthalmocentra) seedlings at different temperatures. The experiment was installed in a completely randomized design, in a factorial scheme of eight salt concentrations (0; 4.0; 8.0; 12.0; 16.0; 20.0; 24.0 and 28.0 dS m-1) and four temperatures (25, 30, 35 and 20-30 °C) in four replicates of 25 seeds under an 8-h photoperiod in Biochemical Oxygen Demand germinators. The variables analyzed were: germination, germination speed index, shoot and root lengths, and shoot, root and total dry matter. Temperature variation influences the response of ‘jurema-de-embira’ seeds to salinity, and the salt stress is intensified...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fabaceae; Forest species; Caatinga; Salinity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000400273

Physiological quality evaluation of the radii Schinus terebinthifolius seeds
Provedor de dados: Revista Brasileira de Sementes
Autores: Pacheco,Mauro Vasconcelos; Silva,Clarissa Santos da; Silveira,Tiago Madruga Telesca; Hölbig,Letícia dos Santos; Harter,Fábio Schaun; Villela,Francisco Amaral.
Schinus terebinthifolius is a native forest species which may be used in recuperating degraded areas and in urban afforestation. In order to evaluate the efficiency of methods for separating lots of S. terebinthifolius seeds into vigor levels, five lots of seeds were qualitatively evaluated for their moisture content, germination, first count, accelerated aging (the traditional and the saturated salt methods), germination speed index, average time of germination and seedling length and dry weight. The results showed that the tests of first germination count, accelerated aging at 41 ºC for 72 hours, average time of germination, seedling length and dry matter permitted the separation of S. terebinthifolius seeds into different vigor levels.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Germination; Physiological potential.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222011000400018

Plants of initial development Bauhinia variegata L. and Ceiba speciosa (A. St. Hil.) Ravenna for urban street tree in the avian substrates bed base
Provedor de dados: Revista Scientia Agraria Paranaensis
Autores: Krefta, Sandra Mara; Brun, Eleandro José; Facchi, Suelen Pietrobon; dos Santos, Luana Maria; Klein, Danieli Regina; Krefta, Sandiane Carla; Germano, Aline Delfino; Frigeri, João Vitor.
Due to the increasing need for forest roads, parks and gardens with good quality seedlings, the study aimed to evaluate the initial development of seedlings of Bauhinia variegata L. and Ceiba speciosa (A. St. Hil.) Ravenna in different proportions bed aviary on the substrate. To this end, it tested five substrates made from bed aviary: T1: commercial substrate (CS) control, T2: 33.3% of soil (S), 33.3% sand (SA) and 33.3 % Bed aviary (BA); T3: 25% S, 25% SA, 50% BA; T4: 16,6% S, 16,6% SA, 66,6% BA; T5: 100% BA. From the results, it is concluded that all substrates studied were shown to be suitable for the development of seedlings of B. variegata and C. speciosa, however, the use of bed aviary becomes interesting in the production of seedlings, therefore,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exotic species; Forest species; Agro-industrial waste.
Ano: 2017
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14001

Plant regeneration from cotyledonary explants of Eucalyptus camaldulensis
Provedor de dados: Scientia Agricola
Autores: Dibax,Roberson; Eisfeld,Cristiane de Loyola; Cuquel,Francine Lorena; Koehler,Henrique; Quoirin,Marguerite.
Breeding methods based on genetic transformation techniques need to be implemented for Eucalyptus camaldulensis to shorten the long breeding cycles and avoid manipulation of adult trees; that requires the development of plant regeneration protocols enabling development of plants from transformed tissues. The present work aimed to optimise the regeneration process already established for the species. Cotyledonary leaves of E. camaldulensis were cultured in MS medium supplemented with naphthaleneacetic acid (NAA) and 6-benzylaminopurine (BAP) combinations. The most efficient treatment for bud indirect regeneration (2.7 µmol L-1 NAA and 4.44 µmol L-1 BAP) was used for further experiments. When explants were kept in the dark during the first 30 days, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro culture; Forest species; Culture media; Organogenesis.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000400016

'Aroeira-branca' [Lithraea molleoides (Vell.) Engl. - Anacardiaceae] seed quality evaluation by the X-ray test
Provedor de dados: Scientia Agricola
Autores: Machado,Cibele Ferreira; Cícero,Sílvio Moure.
'Aroeira-branca', an arboreal species of great ecological and economic importance, is seed propagated and presents limitations with respect to the availability of methods for seed quality evaluation. The X-ray test has been considered of potential value because it is accurate, quick and nondestructive. In this context, the objective of this work was to verify the possibility of this test to detect damage and/or abnormalities in aroeira-branca embryos, in an attempt to correlate these anomalies to germination. Four seed lots were collected in different locations in the southern region of the State of Minas Gerais, Brazil, during 2001. The X-ray test consisted of submitting 100 seeds/lot to radiation (exposure of seeds to radiation of 13 kV/5 minutes) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Radiography; Embryo morphology; Seed germination; Forest species.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200026

Distribution update, conservation status and color in life of the rare Amazonian snake, Eutrachelophis papilio Zaher and Prudente 2019 (Serpentes: Xenodontini)
Provedor de dados: Acta Amazonica
Autores: CITELI,Nathalie; DE-CARVALHO,Mariana; BRANDÃO,Reuber.
ABSTRACT The rare Amazonian snake Eutrachelophis papilio is known from only five individuals, from four localities, belonging to its type-series, the more recent collected over 10 years ago. Here, we expand its distribution and describe its color in life for the first time. We also provide an estimate of its distribution area using the minimum convex polygon method and identify the values of anthropic pressure within its known distribution range with the Human Footprint Index. The new occurrence is located 291 km from the nearest known locality and its distribution is associated with pristine forests. Considering its rarity, and the absence of demographic and biological data, we suggest that the species should be classified as Data Deficient by IUCN...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Conservation status; Forest species; Human footprint; Minimum convex polygon.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000300252

Nursery growth and rhizobia symbiosis of scandent Leguminosae species native to the Amazon region
Provedor de dados: Acta Amazonica
Autores: MOREIRA,Fatima Maria de Souza; COELHO,Katia Pereira; RIBEIRO,Paula Rose de Almeida; GUIMARÃES,Amanda Azarias.
ABSTRACT A great number of species and individuals of scandent legumes establishing symbiosis with nitrogen fixing bacteria occurs in the Amazon Forest. These symbiosis probably play an important role in contributing to nitrogen incorporation in this ecossystem. The objectives of this study were to evaluate the growth of eight species of scandent legumes in five nursery substrates; to compare nodulation with rhizobia strains introduced or native to these substrates; and to characterize phenotypically and genetically these rhizobia. The experiment was carried out in a completely randomized design with five replications. Five to seven months after seedling emergency, according to the legume species, growth and nodulation parameters were determined. Rhizobia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Lianas; Biological nitrogen fixation; Bradyrhizobium.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400367

Seed imbibition and germination of Plathymenia reticulata Benth. (Fabaceae) affected by mercury: possible role of aquaporins
Provedor de dados: Acta Botanica Brasilica
Autores: Cardoso,Amanda Ávila; Borges,Eduardo Euclydes de Lima e; Souza,Genaina Aparecida de; Silva,Cristiane Jovelina da; Pires,Raquel Maria de Oliveira; Dias,Denise Cunha Fernandes dos Santos.
ABSTRACTStudies that evaluate the physiological and biochemical mechanisms of germination within forest species are needed in order to improve our understanding of such processes. Mercury and dithiothreitol are indicated as important tools in studies that assess the activity of aquaporins during imbibition and germination of seeds. To investigate the alterations caused by mercury inPlathymenia reticulata seedsdifferent doses of mercury were used in the presence and absence of dithiothreitol. Mercury had a dose-dependent effect on the seeds; in the most dilute solutions mercury partially inhibited the imbibition process, whereas in the most concentrated solutions it caused the death of the embryos. A delay in the hydration of the seeds may have caused...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaporins; Dithiothreitol; Forest species; Mercury; Seed.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000300285

Nutrition facts and limits for micronutrients in tree species used in urban forestry
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: BRUN,FLÁVIA G.K.; BRUN,ELEANDRO J.; GERBER,DIONATAN; SZYMCZAK,DENISE A.; LONDERO,EDUARDO K.; MEYER,EVANDRO A.; NAVROSKI,MÁRCIO C.
ABSTRACT There is a huge lack of researches that evaluate the nutritional limits in tree species used in urban forestry, especially in terms of micronutrients. This study aimed to establish limits and range of micronutrients levels for the proper development of tree species utilized in urban forestry. The study was conducted in the city of Santa Maria-RS-Brazil. Through forest inventory, 23 forest species present in urban forest were selected, and 05 vegetative branches of each tree were collected, in which the contents of B, Cu, Fe, Mn and Zn were analyzed. Ranges of micronutrients’ contents were developed for class limits criteria. Nutritional problems were detected for B, Cu and Zn in G. robusta and S. cumini, indicating a need of fertilization and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Urban forestry; Forest nutrition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401881

Use of Frozen Leaves for Morpho-anatomical Characterization of Nectandra megapotamica (Spreng.) Mez., Lauraceae
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Costa,Leonardo Severo da; Reiniger,Lia Rejane Silveira; Trindade,Helena; Heinzmann,Berta Maria; Bianchini,Nadia Helena.
Abstract Nectandra megapotamica (Spreng.) Mez. it is a native tree species of the Atlantic Forest, commonly known as canela-preta. The species has some anti-inflammatory, antitumor and antirheumatic properties among others. In this work the use of frozen plant material for microscopy analysis was tested. In addition, the leaf morpho-anatomy of the species was characterized which allowed to perform a structural description and to identify structures of secretion and storage of essential oil. The plant material was prepared for analyzes in optical, fluorescence and scanning electron microscopy. The leaf anatomy shows glabrous epidermis, unistratified, paracytic stomata, absence of trichomes, polyhedral epidermal cells. Some typical family characteristics...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; New methodology; Leaf anatomy; Essential oil; Secretory cavities.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100423

Seed viability of Dimorphandra gardneriana subject to water stress in different temperatures
Provedor de dados: Ciência Rural
Autores: Ursulino,Marina Matias; Costa,Maria do Perpétuo Socorro Damaceno; Medeiros,José George Ferreira; Alves,Edna Ursulino; Araujo,Paulo Costa; Bruno,Riselane de Lucena Alcantara; Araujo,Luciana Rodrigues de.
ABSTRACT: The forest species Dimorphandra gardneriana Tul. is widely used for various pharmacological products, yet few basic studies have been undertaken to understand their ecological and physiological attributes under stress conditions. The goal of this research was to evaluate the seed germination and vigor when subjected to different osmotic potentials and temperatures. Water restriction was simulated with polyethylene glycol 6000 solution (PEG 6000) with osmotic potentials of 0; -0,2; -0,4; -0,6; -0,8, and -1,0MPa at temperatures of 20, 25, 30, and 35°C. The effect of the treatment was determined by the germination and vigor (germination speed index, length and phytomass of dry shoot and roots) of the seeds, in an entirely random design with four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Faveira; Water restriction; Forest species.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202090

Parameters based on X-ray images to assess the physical and physiological quality of Leucaena leucocephala seeds
Provedor de dados: Ciência e Agrotecnologia
Autores: Medeiros,André Dantas de; Araújo,Joyce de Oliveira; León,Manuel Jesús Zavala; Silva,Laércio Junio da; Dias,Denise Cunha Fernandes dos Santos.
ABSTRACT Non-destructive and high performance analyses are highly desirable and important for assessing the quality of forest seeds. The aim of this study was to relate parameters obtained from semi-automated analysis of radiographs of Leucaena leucocephala seeds to their physiological potential by means of multivariate analysis. To do so, seeds from five lots collected from parent trees from the region of Viçosa, MG, Brazil, were used. The study was carried out through analysis of radiographic images of seeds, from which the percentage of damaged seeds (predation and fungi), and measurements of area, perimeter, circularity, relative density, and integrated density of the seeds were obtained. After the X-ray test, the seeds were tested for germination in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Image analysis; Multivariate analysis; Relative density; Seed radiography.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000600643