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	Provedor de dados Infoteca-e (39) Rev. Bras. Bot. (3) R. Bras. Zootec. (3) Naturalis (2) Acta Amazonica (2) Acta Botanica (2) Agronomy (1) Ciencia e Investigación Agraria (1) OAK (1) Animal Sciences (1) Colegio de Postgraduados (1) Biocell (1) Bragantia (1) BJMBR (1) Ciência e Agrotecnologia (1) Ecología austral (1) Genet. Mol. Biol. (1) Planta Daninha (1) RChHN (1) Mais... Autor SOUZA FILHO, A. P. da S. (7) NEVES, M. do P. H. das (4) ALMEIDA, D. L. de (3) ANDRADE, R. P. de (3) COSTA, N. de L. (3) SILVA, J. C. S. (3) SOUSA, F. B. de (3) ARAUJO FILHO, J. A. de (2) BORGES, A. L. (2) DANTAS, M. (2) DUQUE, F. F. (2) DUTRA, S. (2) GONCALVES, C. A. (2) GONÇALVES, C. A. (2) LEITE, G. G. (2) MACHADO, L. A. Z. (2) MEIRELLES, P. R. de L. (2) MOCHIUTTI, S. (2) OLIVEIRA, J. R. da C. (2) ROCHA FILHO, G. A. da (2) Mais... Palavra-chave Grasses (64) Gramínea (21) Forage (17) Cerrado (15) Brazil (14) Brasil (13) Legumes (11) Leguminosa (9) Gramínea Forrageira (8) Amapá (7) Pastagem (6) Forrageira (5) Pasture (5) Savannas (5) Brachiaria (3) Caprino (3) Forage legumes (3) Germination (3) Germinação (3) Goats (3) Mais... Tipo do documento Folhetos (39) Info:eu-repo/semantics/article (16) Article / Letter to the editor (2) Journal article (2) Info:eu-repo/semantics/other (1) Info:eu-repo/semantics/report (1) Pesquisa de campo e análise laboratorial (1) Mais... Ano 2024 (1) 2023 (2) 2020 (1) 2019 (4) 2018 (1) 2017 (2) 2016 (3) 2015 (3) 2014 (1) 2012 (2) 2009 (1) 2006 (2) 2005 (4) 2003 (2) 2002 (1) 2001 (3) 1999 (1) 1998 (4) 1997 (1) 1996 (1) Mais... País Brazil (56) Argentina (2) Chile (2) Netherlands (2) Japan (1) Mexico (1) Mais... Idioma Português (42) Inglês (19) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 64 Primeira ... 1 2 3 4 ... Última NOMENCLATURAL AND CRITICAL NOTES ON SOME BRAZILIAN SPECIES OF Paspalum (POACEAE: PANICEAE) Acta Amazonica FILGUEIRAS,Tarciso S.. A critical analysis of the type collections of 39 species names of Paspalum L. (Poaceae: Paniceae) from Brazil described by Swallen is presented along with comments based on more recent gatherings of the species. Eighteen new synonyms are proposed. Tipo: Info:eu-repo/semantics/article Palavras-chave: Gramineae; Grasses; Nomenclature; Brazil. Ano: 1993 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671993000300147 New records of the invasive macrophyte, Urochloa arrecta extend its range to eastern Brazilian Amazon altered freshwater ecosystems Acta Amazonica FARES,Ana Luisa Biondi; NONATO,Flávia Alessandra da Silva; MICHELAN,Thaísa Sala. ABSTRACT Invasive species influence the structure and functioning of ecosystems, as they affect native species, significantly decreasing their diversity. Aquatic ecosystems harbor a great biodiversity, and invasive macrophytes significantly affect the native plant communities, causing a cascade effect on other trophic levels. Among invasive macrophytes, Urochloa arrecta is cause for concern in the Neotropics and is found in several regions of Brazil, specially in the southeastern and southern regions. So far the species had been recorded only in the northern state of Amazonas. We report the first record of the species in the state of Pará, in the eastern Brazilian Amazon. We emphasize that identifying sites where this species is invasive is the best... Tipo: Info:eu-repo/semantics/report Palavras-chave: Aquatic plants; Invasion ecology; Grasses; Poaceae; Amazonas state; Pará state. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000200133 First record of Isachne ligulata (Poaceae: Micrairoideae) in Brazil and a key for the Brazilian species of the genus Acta Botanica Rodrigues,Rodrigo S.; Filgueiras,Tarciso S.. ABSTRACT While performing a taxonomic revision of the Neotropical species of Isachne, analysis of herbarium collections revealed the occurrence of Isachne ligulata in Brazil. We provide a description and the first illustration of I. ligulata, along with comments on its ecology, distribution and morphological affinities with related South American species. We also provide an identification key for the Brazilian species of the genus. Tipo: Info:eu-repo/semantics/other Palavras-chave: Distribution; Grasses; Isachneae; Neotropics; South America. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400700 Poaceae communities in the savannas of the Amazon Estuary in Brazil Acta Botanica Rocha,Antônio Elielson Sousa; Miranda,Izildinha Souza. We sought to identify the major environmental factors that affect the diversity and distribution of Poaceae in the savannas of the Amazon Estuary. The study was conducted across seven areas of savanna in the Amazon Estuary, within which 160 subplots of 1 m² each were established within four 10 × 100 m plots. Soil samples were collected at a depth of 0-20 cm. A total of 24 Poaceae species were recorded. Only two were common to all of the areas studied (Axonopus aureus P. Beauv. and Anthaenantia lanata (Kunth) Benth). The edaphic factors that most influenced the Poaceae in the savannas studied were organic matter, coarse sand, and silt contents. Conversely, rainfall had no effect. The floristic and structural characteristics of the savannas studied suggest... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Grasses; Panicoideae; Plant-soil interactions; Poaceae. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000400010 Phosphorus as a mitigator of the effects of water stress on the growth and photosynthetic capacity of tropical C4 grasses Agronomy Kuwahara, Frank Akiyoshi; Souza, Gustavo Maia; Guidorizi, Kezia Aparecida; Costa, Ciniro; Meirelles, Paulo Roberto de Lima. Water deficiency during the dry seasons influences the relationship between water and gas exchange in tropical grasses, reducing their productive potential. In addition, the phosphorus (P) deficiency Brazilian soils adds to the set of factors limiting crop production. In this context, the objective of this study was to evaluate the responses of different tropical forage species to phosphorus supplementation as mitigating the damage caused by water stress. Seeds of Urochloa brizantha cv. MG-4, Urochloa decumbens cv. Basilisk, Panicum maximum cv. Áries, Panicum maximum cv. Tanzânia and Paspalum atratum cv. Pojuca were germinated in pots containing 10 liters of red-yellow podzolic type soil. Experiments were conducted by combining levels of phosphorus, 8,0... Tipo: Info:eu-repo/semantics/article Palavras-chave: Grasses; Leaf gas exchanges; Fertilization; Water deficit pasture; Leaf gas exchanges; Fertilization; Water deficit. Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28454 Dynamics of yield and nutritional value for winter forage intercropping - doi: 10.4025/actascianimsci.v34i2.11507 Animal Sciences Paris, Wagner; Universidade Tecnológica Federal do Paraná; Marchesan, Renato; Universidade Tecnológica Federal do Paraná; Cecato, Ulysses; Universidade Estadual de Maringá; Martin, Thomas Newton; Universidade Tecnológica Federal do Paraná; Ziech, Magnos Fernando; Universidade Tecnológica Federal do Paraná; Borges, Gisele Silveira; Universidade Tecnológica Federal do Paraná. The work was carried out to assess mass production and nutritional content of winter forages using lopsided oat (Avena strigosa) and white oat (Avena sativa) intercropped with ryegrass (Lolium multiflorum) and vetch (Vicia sativa L.). The species were intercropped as the following treatments: lopsided oat with ryegrass (LO+RG); white oat with ryegrass (CO+RG); lopsided oat with vetch (LO+V); white oat with vetch (CO+V); lopsided oat, vetch and ryegrass (LO+RG+V); and white oat, ryegrass and vetch (CO+RG+V). The study evaluated total forage mass production of each intercropping and crude protein levels, neutral detergent fiber and in vitro digestibility coefficient of dry matter. The results indicate that forage yield of oats was higher in early... Tipo: Pesquisa de campo e análise laboratorial Palavras-chave: 5.04.04.00-8 intercropping; Grasses; Legumes; Pasture quality. Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11507 Microsporogenesis in tetraploid accessions of Brachiaria nigropedata (Ficalho &amp; Hiern) Stapf (Gramineae) Biocell Sayuri Utsunomiya,Karina; Suely Paglirini,Maria; Borges do Valle,Cacilda. The genus Brachiaria (Trin.) Griseb. has achieved considerable importance to cattle production systems, as a result of the good production and adaptation of a few cultivars to poor and acid soils of the Brazilian savannas. Many of its species and accessions are polyploid and apomictic, which limits direct hybridization. To assist the breeding program, cytogenetic characterization has been undertaken on the accessions of Brachiaria collection at the Embrapa Beef Cattle Research Center. In this study, chromosome number and meiotic behavior are reported for the Brachiaria nigropedata (Ficalho &amp; Hiern) Stapf collection. The 20 available accessions are tetraploid (2n = 4x = 36). Chromosomes paired preferentially as bivalents, but quadrivalents were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria nigropedata; Chromosome number; Meiosis; Polyploidy; Apomixis; Grasses. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000300007 Soil conservation management with cover crops: effects on critical energy levels, release and dispersion of aggregates Bragantia Silva,Érika Andressa da; Reinert,Dalvan José; Reichert,José Miguel; Mallmann,Micael Stolben; Pereira,Monike Andrade; Pons,Sarah Severo; Foggiato,William Saidelles. ABSTRACT The normalized dispersion index (NDI) and the b/a index are commonly used to express the stability of aggregates measured by ultrasound. However, few studies have used the critical energy (CE) extracted from modeling to explain the effects of soil use and management on soil aggregation. The objective of this study was to evaluate the influence of soil cover on the CE level required for dispersion of aggregates of a Typic Hapludalf. Soil samples collected from the 0.0-0.05 m depth were evaluated in five different managements with cover plants: perennial soybean (PS), peanuts (P), spontaneous vegetation (SV), black oat/forage turnip (BOFT), and black oat/hairy vetch (BOHV). Aggregates ? 2 mm of the treatments were exposed to ultrasonic irradiation... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ultrasonic dispersion; Aggregation models; Leguminous; Grasses. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300444 Hypoglycemic activity of polysaccharide fractions containing ß-glucans from extracts of Rhynchelytrum repens (Willd.) C.E. Hubb., Poaceae BJMBR De Paula,A.C.C.F.F.; Sousa,R.V.; Figueiredo-Ribeiro,R.C.L.; Buckeridge,M.S.. ß-Glucans are soluble fibers with physiological functions, such as interference with absorption of sugars and reduction of serum lipid levels. The objective of the present study was to analyze the distribution of ß-glucans in different tissues of the African grass species Rhynchelytrum repens and also to evaluate their hypoglycemic activity. Leaf blades, sheaths, stems, and young leaves of R. repens were submitted to extraction with 4 M KOH. Analysis of the fractions revealed the presence of arabinose, glucose, xylose, and traces of rhamnose and galactose. The presence of ß-glucan in these fractions was confirmed by hydrolyzing the polymers with endo-ß-glucanase from Bacillus subtilis, followed by HPLC analysis of the characteristic oligosaccharides... Tipo: Info:eu-repo/semantics/article Palavras-chave: SS-Glucans; Cell wall; Hypoglycemic activity; Diabetes mellitus; Grasses; Rhynchelytrum repens. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000600010 Effects of different water regimes on the anatomical characteristics of roots of grasses promising for revegetation of areas surrounding hydroelectric reservoir Ciência e Agrotecnologia Silva,Silvana da; Castro,Evaristo Mauro de; Soares,Ângela Maria. The objective of this study was to evaluate the effect of different water regimes on some aspects of root anatomy of three grasses: Echinochloa pyramidalis (canarana), Setaria anceps (setária) and Paspalum paniculatum (paspalo). The plants were cultivated in a greenhouse and submitted to three water regimes: daily watering; suspension of watering and suspension of watering followed by submersion of the root system. Segments of the middle part of the roots were taken and submitted to classical techniques in botany for slide making and tissue analysis. Anatomical differences were observed among the three grasses submitted to water regimes regarding the number of cell layers in the external cortex and thickening of lignin and suberin. The submerged roots of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Revegetation; Grasses; Water deficit; Echinochloa pyramidalis; Setaria anceps; Paspalum paniculatum; Flood; Aerenchyma; Anatomical characteristics; Roots. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542003000200020 Nutritional value of Brachiarias and forage legumes in the humid tropics of Ecuador Ciencia e Investigación Agraria Balseca,Diana G; Cienfuegos,Eugenia G; López,Hilda B; Guevara,Hernán P; Martínez,Juan C. This research evaluated the nutritional value of five varieties of Brachiarias: B. decumbens Stapf; B. brizantha Marandú; B. brizantha Piatá; B. brizantha Xaraés; and Mulato II [B. ruziziensis × B. brizantha]). The Brachiarias were combined at different inclusion rates (0, 10 and 15%) with two tropical forage legume species (Centrosema pubescens and Cajanus cajan, ECV22). The samples were collected at the experimental farm, The Oasis, a property of the Universidad Tecnológica Equinoccial (Ecuador), with 42 d of regrowth for the Brachiarias and 150 d for the legumes in the dry season. The proximate analysis and the Van Soest procedure were performed in the laboratory of food science and animal nutrition of the Escuela Superior Politécnica de Chimborazo... Tipo: Journal article Palavras-chave: Brachiaria; Cajanus cajan; Centrosema pubescens; Digestibility; Grasses; Legumes; Nutritional value. Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000100006 Crecimiento, productividad y calidad de Megathyrsus maximus bajo cobertura arbórea de Gliricidia sepium. Colegio de Postgraduados Medinilla Salinas, Lucero. El objetivo de esta investigación fue evaluar el efecto del dosel de Gliricidia sepium sobre el crecimiento, productividad y calidad del forraje de Megathyrsus maximus en las épocas de nortes, seca y lluvias. Se trazaron cuatro parcelas contiguas (15 x 17 m cada una) en un acahual de G. sepium; en dos parcelas se eliminaron los árboles (SCA) y las otras se dejaron intactas (COA). En todas se plantó M. maximus a 50 cm entre plantas. La altura de la gramínea fue mayor en lluvias (p < 0.0001), y menor en COA (p < 0.0001), al igual que el número de tallos, aunque esta última fue mayor en la época de nortes (p < 0.0001) y menor en la época seca (p = 0.002). La cobertura arbórea y la época afectaron el rendimiento del forraje, siendo 22% mayor en SCA (p... Palavras-chave: Sistema silvopastoril; Megathyrsus maximus; Gliricidia sepium; Gramíneas; Cobertura arbórea; Silvopastoral system; Grasses; Tree cover; Agroecosistemas tropicales; Maestría. Ano: 2012 URL: http://hdl.handle.net/10521/1705 Predicting leaf litter decomposability: an exploratory assessment of leaf traits, litter traits and spectral properties in six Mediterranean herbaceous species Ecología austral Pérez-Harguindeguy,Natalia; Cortez,Jacques; Garnier,Eric; Gillon,Dominique; Poca,María. Several studies attempted to find quick and easy methods to assess litter decomposability. We tested three frequently used methods on 6 Mediterranean herbaceous species from different plant families and life forms: (1) &#8216;green leaves traits&#8217;: traits of living leaves related to the strategies of living plants; (2) &#8216;litter traits&#8217;: litter respiration during in vitro incubation and initial litter properties; and (3) &#8216;leaf and litter spectral properties&#8217;: the spectral characteristics (NIR) of green leaves and litter. We analyzed the relationship between these methods and their consistency to assess litter decomposability in the field. Green leaves spectral properties were the most accurate to predict... Tipo: Info:eu-repo/semantics/article Palavras-chave: NIRS; Forbs; Grasses; Litter decomposition; Litter quality; Functional markers. Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2015000100007 Karyotypes of two cytotypes of Paspalum quadrifarium Lam. (Poaceae): an alternative technique for small chromosomes in plants Genet. Mol. Biol. Speranza,Pablo; Vaio,Magdalena; Mazzella,Cristina. Paspalum quadrifarium Lam. is a bunchgrass native to Uruguay, Argentina, and southern Brazil. Diploid, triploid, tetraploid and hexaploid cytotypes have been reported for this species of the Quadrifaria group of Paspalum. In this group, a high degree of cytogenetic homology between the genomes of several diploid species has been reported, based on meiotic pairing in interspecific hybrids; multivalent associations would thus be expected in polyploid hybrids. Karyotype analysis could provide useful information about the genomic architecture of polyploid plants; however, the fully condensed mitotic chromosomes of Paspalum do not provide enough morphological features for such an analysis. In this paper, we used mitotic prometaphase chromosomes treated with 70%... Tipo: Info:eu-repo/semantics/article Palavras-chave: Karyotype; Meiosis; Prometaphase; Grasses; Paspalum. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000400013 Desenvolvimento de método analítico para a determinação de resíduos de herbicidas em capim-elefante. Infoteca-e ASSALIN, M. R.; BRIGHENTI, A. M.; QUEIROZ, S. C. do N. de. Resumo: O capim elefante, (Pennisetum purpureum Schum) apresenta elevado potencial para a produção de biomassa, constituindo-se numa forragem de alta qualidade. É intensamente utilizado na alimentação de ruminantes e na produção de biocombustíveis. A produtividade e a qualidade da forragem são diretamente afetadas pela interferência de plantas daninhas, resultando em considerável perda de produtividade. No Brasil não existem herbicidas registrados para o controle seletivo de plantas invasoras em cultivos de capim- elefante, sendo necessários estudos sobre potenciais herbicidas para este fim. Este trabalho tem como objetivo otimizar e validar um método multirresíduo, para determinação de atrazina, clorimurom-etílico, halossulfurom-metílico,... Tipo: Folhetos Palavras-chave: Erva invasora; LC-MS; Liquid chromatography-mass spectrometry; Resíduo Quimico; Herbicida; Capim Elefante; Análise Química; Método de Análise; Espectrometria; Erva Daninha; Pennisetum Purpureum; Invasive species; Grasses; Mass spectrometry; Analytical methods. Ano: 2023 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1159594 Avaliação de pastagem nativa em áreas sujeitas a inundação com predominância de hymenachne amplexicaulis no Pantanal, MS, Brasil. Infoteca-e CRISPIM, S. M. A.; SOARES, M. T. S.; SORIANO, B. M. A.; SANTOS, S. A.. Este documento apresenta evidências sobre a importância dos campos nativos do pantanal sazonalmente inundáveis na alimentação dos ruminantes e animais silvestres. Em especial a espécie Hymenachne amplexicaulis por ser uma espécie chave na alimentação dos bovinos, equinos e herbívoros silvestres. A manutenção de serviços ecossistêmicos essenciais à manutenção da funcionalidade destes ambientes nos dá em troca a regulação hídrica e a estocagem de carbono. É indispensável ações voltadas ao monitoramento da disponibilidade de forragem nativa desta e de diferentes unidades de paisagem utilizadas por estes animais, bem como suas respectivas inter-relações com o meio abiótico, dada a importância econômica e ambiental deste recurso para a sustentabilidade do... Tipo: Folhetos Palavras-chave: Pastagem nativa; Gramínea; Pastures; Grasses; Hymenachne. Ano: 2017 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1086752 Avaliação e seleção de forrageiras nativas e exóticas para o semi-árido brasileiro. Infoteca-e SOUSA, F. B. de; ARAUJO FILHO, J. A. de. A escassez de pesquisa com relacao a avaliacao e a selecao de genotipos superiores de forrageiras e um dos fatores limitantes que afetam o desempenho da pecuaria no semi-arido do Brasil. Este trabalho apresenta os resultados da avaliacao e selecao de germoplasma forrageira no semi-arido. Foram avaliados 691 acessos, utilizando-se parametros agronomicos, com enfase na produtividade e na estabilidade da producao de forragem. Vinte e tres acessos foram selecionados, sendo dezesseis leguminosas e sete gramineas, que podem ser recomendadas para uso na regiao semi-arida do Nordeste Brasileiro. Tipo: Folhetos Palavras-chave: Semiarido; Brasil; Agronomic characters; Feed crops; Leguminosa forrageira; Gramínea forrageira; Espécie nativa; Germoplasma; Caprino; Ovino; Grasses; Legumes; Goats; Sheep; Semiarid zones; Brazil. Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/529220 Germinacao de gramineas dos cerrados: Echinolaena inflexa e Paspalum erianthum. Infoteca-e SILVA, J. C. S.; ROCHA FILHO, G. A. da. Tipo: Folhetos Palavras-chave: Echinolaena inflexa; Capim flexinha; Paspalum erianthum; Planta nativa; Indigenous organisms; Capim Branco; Cerrado; Gramínea; Germinação; Reprodução; Grasses; Germination; Reproduction. Ano: 1988 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549366 Tolerância à seca em forrageiras tropicais - Aspectos agronômicos e microbiológicos. Infoteca-e SOUTO, S. M.; ARONOVICH, S.. Gramíneas. Leguminosas; Método de seleção de plantas para a seca, através da germinação de sementes em solução de sacarose. Tipo: Folhetos Palavras-chave: Tropical forage; Saccharose; Forrageira Tropical; Gramínea; Germinação; Leguminosa; Semente; Sacarose; Grasses; Germination; Legumes; Sucrose; Seeds. Ano: 1992 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/624208 Comportamento produtivo de 12 gramineas forrageiras de corte em diferentes niveis de adubação fosfatada em Porto Velho-RO. Infoteca-e MENDONCA, J. F. B.; GONCALVES, C. A.. Tipo: Folhetos Palavras-chave: Gramineas; Forrageiras; Brasil; Porto Velho; Rondonia; Fertilization; Phosphate; Adubação; Fosfato; Brazil; Forage; Grasses. Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698529 Registros recuperados: 64 Primeira ... 1 2 3 4 ... Última

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