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'Aroeira-branca' [Lithraea molleoides (Vell.) Engl. - Anacardiaceae] seed quality evaluation by the X-ray test Scientia Agricola
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
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Associação de Perisporiopsis melioloides com folhas de breu-sucuruba (Trattinnickia burserifolia) PFB - Pesquisa Florestal Brasileira
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
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Comportamento de especies de Eucalyptus na regiao do Carrasco da Ibiapaba em condicoes de riscos. Repositório Alice
FROTA, P. C. E.; LIMA, P. C. F.; PESSOA, P. F. A. de P..
Este trabalho foi desenvolvido na regiao de "carrasco" do planalto da Ibiapaba, no campo experimental do Departamento de Pesquisa da Ibiapaba, Tiangua, CE, da Empresa de Pesquisa Agropecuaria do Ceara- EPACE. Estao sendo testadas onze especies de Eucalyptus, procedentes da Australia e Brasil (Sao Paulo): E. alba, E. brassiana, E. camaldulensis, E> citriodora, E> drepanophylla, E. exserta, E. mesophylla, E. polycarpa, E. teretiocornis, E. tesselaris e E. urophylla. O delineamento experimental adotado foi o de blocos ao acaso, com tres repeticoes, com parcelas de 25 plantas no espacamento de 3 m x 2 m. Na avaliacao, realizada aos 60 meses de idade, constataram-se indices de sobrevivencia entre 85 e 100%. Com a aplicacao do metodo de Hannock & Levy...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Especie florestal; Forest species; Variety; Eucalipto; Variedade; Eucalyptus.
Ano: 1992 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132098
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Desenvolvimento inicial e eficiência de uso de água e nitrogênio por mudas de Calophyllum brasiliense, Eucalyptus urograndis, Tabebuia impetiginosa E Toona ciliata. Repositório Alice
SOUZA, A. F.; ROCHA JUNIOR, E. de O.; LAURA, V. A..
O conhecimento sobre o desenvolvimento inicial das mudas é fundamental para o sucesso de atividades de reflorestamento e de plantio em florestas naturais. O objetivo deste trabalho foi avaliar o desenvolvimento inicial e a eficiência de uso de água e nitrogênio por mudas de quatro espécies florestais nativas e exóticas (Calophyllum brasiliense (nativa), Eucalyptus urograndis (exótica), Toona ciliata (exótica) e Tabebuia impetiginosa (nativa)) com idade de aproximadamente 120 dias após a semeadura por 120 dias após o transplante em condições de casa de vegetação. Foram realizadas amostragens destrutivas para avaliar a biomassa seca (folha, caule, raiz e total), área foliar, relação raiz/parte aérea e nitrogênio total nas mudas. Com base nessas variáveis,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Análise de crescimento; Consumo de água; Espécie florestal; Growth analysis; Water consumption; Forest species; Native species; Espécie Nativa.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1102362
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Distribution and development of the root system of Castanea sativa and Pseudotsuga menziesii in young forest plantations IPB - Escola Superior Agrária
Fonseca, Felícia; Martins, Afonso; Figueiredo, Tomás de; Nogueira, Clotilde; Guerra, Alzira.
The distribution of roots in the soil results of a series of complex and dynamic processes, which include interactions between the environment, the soil and the plants in full growth ( Prichett & Fisher, 1987; Jourdan e Rey, 1997; Gonçalves & Benedetti, 2000). Most studies of the root systems in forest species are conducted under water stress conditions; hence, the major concern focuses on the deep root development. Understanding the root system of forest species might enable recommendation on which species are more adequate to each site according to the characteristics of the latest, thus allowing a better use of the soil (Prichett & Fisher, 1987; Magalhães & Blum, 2000; Lecompte et al., 2001) and, consequently, mitigate the risks of...
Tipo: ConferenceObject Palavras-chave: Forest species; Root systems; Site preparation.
Ano: 2006 URL: http://hdl.handle.net/10198/5703
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Effect of Shadeness Over Chlorophyll Level and Initial Growth of Cariniana legalis PFB - Pesquisa Florestal Brasileira
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
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Ensaios de procedências de Acacia mangium Willd., no planalto do Tapajós, Pará. Infoteca-e
YARED, J. A. G.; VIANA, L. M.; KANASHIRO, M..
1990
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Especie florestal; Crescimento; Adaptação; Acacia mangium; Campo Experimental de Belterra; Amazônia; Brasil; Forest species; Growth; Adaptation.
Ano: 1990 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/381088
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Forest species growth and soil characterization in agroforestry systems of Rondônia northwest of the Brazilian Amazon: a case study. Repositório Alice
LOCATELLI, M.; MARCOLAN, A. L.; VIEIRA, A. H.; MENEZES, S. F. M..
2009
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Espécies florestais; Solo; Latossolo amarelo; Latossolo vermelho; Forest species; Soil; Red Yellow; Yellow Latosols.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/702835
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Germination and initial development of Simira gardneriana seedling under water stress and at different temperatures AGRIAMBI
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 & 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
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‘Jurema-de-embira’ seed germination under water stress and at different temperatures AGRIAMBI
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
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Light intensity and type of container on producing Cassia grandis L. f. seedlings AGRIAMBI
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
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Morphophysiological responses of Ilex paraguariensis seedlings to different substrates and fertilizations AGRIAMBI
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
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Nursery growth and rhizobia symbiosis of scandent Leguminosae species native to the Amazon region Acta Amazonica
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
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Nutrition facts and limits for micronutrients in tree species used in urban forestry Anais da ABC (AABC)
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
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Organic carbon contents of three tree species in different spacing PFB - Pesquisa Florestal Brasileira
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
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Parameters based on X-ray images to assess the physical and physiological quality of Leucaena leucocephala seeds Ciência e Agrotecnologia
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
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Physiological quality evaluation of the radii Schinus terebinthifolius seeds Rev. bras. sementes
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
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Plant regeneration from cotyledonary explants of Eucalyptus camaldulensis Scientia Agricola
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
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Plants of initial development Bauhinia variegata L. and Ceiba speciosa (A. St. Hil.) Ravenna for urban street tree in the avian substrates bed base Sci. Agrar.Paran. / SAP
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
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Salt stress and temperatures on the germination and initial growth of ‘jurema-de-embira’ (Mimosa ophthalmocentra) seedlings AGRIAMBI
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
Registros recuperados: 29
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