Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 10
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Adaptation of the C4 grass Panicum maximum to defoliation is related to plasticity of N uptake, mobilisation and allocation patterns. Repositório Alice
SANTOS, P. M.; THORNTON, B.; CORSI, M..
Dry mass production and persistence of Panicum maximum pastures depends on nitrogen supply. Defoliation influences N uptake and allocation patterns yet its effects on plasticity of N dynamics in P. maximum have not been investigated. Stable isotopes of N (15N) were used in order to test the hypothesis that defoliation in terms of proportion of the leaf area removed effects N mobilisation, uptake and allocation patterns in P. maximum. The plants were initially cut weekly to a height of either 0.15 m or 0.30 m for seven weeks. Eight weeks after the first defoliation, all plants were defoliated for a final time to remove 0, 25, 50, 75 or 100 % of the area of each individual leaf blade of the main tiller. Root N uptake was reduced when all leaf area was...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Clipping height; Guineagrass; Organic reserves; Regrowth; Tropical grass.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/930067
Imagem não selecionada

Imprime registro no formato completo
Adaptation of the C4 grass Panicum maximum to defoliation is related to plasticity of N uptake, mobilisation and allocation patterns Scientia Agricola
Santos,Patricia Menezes; Thornton,Barry; Corsi,Moacyr.
Dry mass production and persistence of Panicum maximum pastures depends on nitrogen supply. Defoliation influences N uptake and allocation patterns yet its effects on plasticity of N dynamics in P. maximum have not been investigated. Stable isotopes of N (15N) were used in order to test the hypothesis that defoliation in terms of proportion of the leaf area removed effects N mobilisation, uptake and allocation patterns in P. maximum. The plants were initially cut weekly to a height of either 0.15 m or 0.30 m for seven weeks. Eight weeks after the first defoliation, all plants were defoliated for a final time to remove 0, 25, 50, 75 or 100 % of the area of each individual leaf blade of the main tiller. Root N uptake was reduced when all leaf area was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clipping height; Guineagrass; Organic reserves; Regrowth; Tropical grass.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000500002
Imagem não selecionada

Imprime registro no formato completo
Animal production from new Panicum maximum genotypes in the Amazon biome, Brazil. Repositório Alice
ANDRADE, C. M. S. de; FARINATTI, L. H. E.; NASCIMENTO, H. L. B. do; ABREU, A. de Q.; JANK, L.; ASSIS, G. M. L. de.
2013
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Guineagrass; Forage breeding; Liveweight gain; Carrying capacity; Forage allowance.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/974378
Imagem não selecionada

Imprime registro no formato completo
Biometrical analysis and selection of tetraploid progenies of Panicum maximum using mixed model methods. Repositório Alice
RESENDE, R.M.S.; JANK, L., VALLE, C.B. do; BONATO, A.L.V..
The objectives of this work were to estimate the genetic and phenotypic parameters and to predict the genetic and genotypic values of the selection candidates obtained from intraspecific crosses in Panicum maximum as well as the performance of the hybrid progeny of the existing and projected crosses. Seventy-nine intraspecific hybrids obtained from artificial crosses among five apomictic and three sexual autotetraploid individuals were evaluated in a clonal test with two replications and ten plants per plot. Green matter yield, total and leaf dry matter yields and leaf percentage were evaluated in five cuts per year during three years. Genetic parameters were estimated and breeding and genotypic values were predicted using the restricted maximum...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Guineagrass; Apomixis; Breeding; Heritability; Repeatability; Selection of parents; Capim colonião; Apomixia; Melhoramento; Herdabilidade; Repetibilidade; Seleção de genitores.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/110284
Imagem não selecionada

Imprime registro no formato completo
Biometrical analysis and selection of tetraploid progenies of Panicum maximum using mixed model methods PAB
Resende,Rosangela Maria Simeão; Jank,Liana; Valle,Cacilda Borges do; Bonato,Ana Lídia Variani.
The objectives of this work were to estimate the genetic and phenotypic parameters and to predict the genetic and genotypic values of the selection candidates obtained from intraspecific crosses in Panicum maximum as well as the performance of the hybrid progeny of the existing and projected crosses. Seventy-nine intraspecific hybrids obtained from artificial crosses among five apomictic and three sexual autotetraploid individuals were evaluated in a clonal test with two replications and ten plants per plot. Green matter yield, total and leaf dry matter yields and leaf percentage were evaluated in five cuts per year during three years. Genetic parameters were estimated and breeding and genotypic values were predicted using the restricted maximum...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Guineagrass; Apomixis; Breeding; Heritability; Repeatability; Selection of parents.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000400006
Imagem não selecionada

Imprime registro no formato completo
Development of microsatellite markers in Guineagrass (Panicum maximum Jacq.) and their transferability to other tropical forage grass species. Repositório Alice
SOUSA, A. C. B.; JUNGMANN, L.; CAMPOS, T. de; SFORÇA, D. A.; BOAVENTURA, L. R.; SILVA, G. M. B.; ZUCCHI, M. I.; JANK, L.; SOUZA, A. P..
The Guineagrass (Panicum maximum Jacq.) is one of the most important tropical forage grasses, but genetic knowledge and tools regarding this species are still limited. Therefore, 20 novel polymorphic microsatellite markers were developed, validated, and employed in estimating genetic relationships among 25 P. maximum genotypes selected from a Brazilian germplasm collection. In addition, they were tested for cross-species amplification in four other forage grass species. The number of alleles observed for each locus ranged from 4 to 12 (average 6.7). The values of polymorphism information content (PIC) varied from 0.41 to 0.83 (average 0.61) and the discriminating power (D) ranged from 0.53 to 0.98 (average 0.72). Cross-amplification demonstrated the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Capim Tanzânia; Guineagrass; Marcador microssatélite; Amplificação cruzada; Melhoramento genético vegetal; Gramínea forrageira; Capim Colonião; Panicum maximum; Seleção genótipa; Variação genética; Marcador genético; Polimorfismo genético; Plant breeding; Forage grasses; Megathyrsus maximus; Genotype; Genetic variation; Genetic markers; Microsatellite repeats; Genetic polymorphism; Fitomejoramiento; Pastos forrajeros; Variación genética; Genotipo; Marcadores genéticos; Repeticiones de microsatélite.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/901385
Imagem não selecionada

Imprime registro no formato completo
Forage biomass and botanical composition of consortium pasture with forage peanut. Repositório Alice
DEVENS, J.; CARVALHO, P. de; BOURSCHEIDT, M. L. B.; NASCIMENTO, H. L. B.; PEREIRA, D. H.; PEDREIRA, B. C. e.
The use of legumes in pasture is an economic and sustainable option to include nitrogen in forage-based production systems. Despite this, the low persistence of legumes in pastures is pointed out as one of the main causes of low adoption of the consortium. In this context, this study aimed to evaluated botanical composition of pasture of Panicum maximum cv. Mombaça in consortium with Arachis pintoi. The experiment was carried out in Terra Nova do Norte, Mato Grosso, Brazil, in a randomized complete block design (2x2), with two cultivars (Belmonte and Mandobi) and two planting spacing (1x1 and 2x2 m). With three replicates, totaling 12 experimental units. The sampling were taken on November 5, 2016, one year after of implantation. Two quadrats of 1 m² were...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Arachis pintoi; Guineagrass; Arachis pintoi; Botanical composition; Megathyrsus maximus.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1086302
Imagem não selecionada

Imprime registro no formato completo
Harvesting methods on physical and physiological quality of Panicum maximum seeds AGRIAMBI
Machado,Carla G.; Cruz,Simério C. S.; Silva,Givanildo Z.; Carneiro,Luciana C.; Silva,Ingrid M. H. de L..
ABSTRACT The quality of seeds of forage species can be influenced by the different harvesting methods used. The aim of this study was to evaluate the physical and physiological quality of seeds of Panicum maximum, cultivars ‘Massai’ and ‘Mombaça’, obtained by the methods of ground sweeping and direct heading (cutting of the panicles) of different farmers in the year 2014. The test consisted of three lots of each cultivar from seed farmers in the state of Goiás, Brazil. The experimental design was completely randomized, in 3 x 2 factorial scheme (farmer x harvesting methods) with four replicates. The following variables were analyzed: physical purity, 1000-seed weight; germination and first count of germination. At the end of the germination the percentage...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forage grasses; Guineagrass; Physical purity; Ground sweeping.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400309
Imagem não selecionada

Imprime registro no formato completo
Nutritive value of Panicum maximum genotypes under grazing in the Amazon Biome. Repositório Alice
ANDRADE, C. M. S. de; JANK, L.; FARINATTI, L. H. E.; NASCIMENTO, H. L. B. do.
2013
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Digestibility; Guineagrass; Lignin; Plant fiber; Protein; Silica.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/972541
Imagem não selecionada

Imprime registro no formato completo
Seedlings development of Arachis pintoi cv Belmonte and Mandobi in consortium with Mombaça guineagrass. Repositório Alice
DEVENS, J.; CARVALHO, P. de; SILVA, D. S. M.; NASCIMENTO, H. B.; PEREIRA, D. H.; PEDREIRA, B. C. e.
The introduction of legumes into established pastures is usually done using seedlings. However, some species have limited seed production or seed costs difficult the legume introduction into the system. Legumes, as well as Arachis, had being propagated by seedlings. In this context, this study aimed to evaluate development and persistence of seedlings of Arachis pintoi in an established Mombaça (Panicum maximum) pasture. The experiment was carried out in Terra Nova do Norte, Mato Grosso, Brazil. The experimental design was in randomized blocks with three replications. A 2x2 factorial arrange was used: two cultivars (Belmonte and Mandobi) and two plant spacing (1x1 m and 2x1 m), totaling 4 treatments. The experimental period was from January 8, 2016 to...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Guineagrass; Panicum maximum; Plant vigor; Seedlings survival; Megathyrsus maximus; Seedlings.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1086371
Registros recuperados: 10
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional