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| Registros recuperados: 4.030 | |
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| GALLO, P. H; MICHELETTI, P. L.; BOLDRINI, K. R.; RISSO-PASCOLOTTO, C.; PAGLIARINI, M. S.; VALLE, C. B. do.. |
| Microsporogenesis of several Brachiaria species of the Brazilian collection at Embrapa Beef Cattle has been analyzed in detail. This paper reports abnormal cytokinesis in three accessions of three different species (Brachiaria humidicola, 2n = 4x = 36, Brachiaria decumbens, 2n = 4x = 36, and Brachiaria dura, 2n = 6x = 54). Chromosomes paired in bi-, tri-, and quadrivalents in these accessions, whereas chromosome segregation at meiosis I was characterized by exclusion of laggards as micronuclei. In a high number of meiocytes, the first sign of cytokinesis appeared only in metaphase II and did not divide the meiocyte into a dyad. Total absence of cytokinesis was also detected among meiocytes in the second division. Since in both cases the two metaphase... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Melhoramento genético vegetal; Citogenética vegetal; Poliploidia; Planta Forrageira; Gramínea forrageira; Braquiária; Brachiaria humidicola; Brachiaria decumbens; Brachiaria dura; Campo Grande; Mato Grosso do Sul; Brasil; Plant breeding; Cytogenetics; Polyploidy; Feed crops; Feed grasses; Brazil. |
| Ano: 2007 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/326409 |
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| Luz,José Roberto Pujol. |
| The acrocerids (small headed-flies) form a small group of flies, which are difficult to find and observe. They are rare in collections. Their larvae are heteromorphic parasitoids of many families of spiders and their imagoes show a great deal of morphological variation. Little is known about the biology and systematics of this group in the Neotropical region, especially the Philopotinae. Most studies are based on species from Europe and North America. The Philopotinae occurs througout the world, and are characterized by the strongly developed postpronota, which form a shield dorsally in front of the scutum. Fifty specimens of Philopota sp. were collected from branches of Stachytarphetta cayenensis (Verbenaceae) in the Ilha da Marambaia (23º 04' S - 43º 53'... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Philopotinae; Verbenaceae; Atlantic Rain Forest; Hill-topping; Brazil. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0328-03812004000400010 |
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| PEREIRA, G.; AGUIAR, J. L. P. de; SAMPAIO, J. B. R.. |
| A regiao do Nordeste Mineiro e a quarta maior regiao produtora de cafe do Cerrado. Seu cafe tem sido considerado de ma qualidade devido ao despreparo ou falta de tecnica de alguns pequenos e medios produtores no processo de pos-colheita. Levando-se em conta o baixo preco da terra, a facilidade de contratar mao-de-obra e as condicoes edafoclimaticas, essa regiao podera tornar-se uma das maiores produtoras de cafe do Pais. Compreende tres Polos de influencia: Teofilo Otoni, abrangendo dezoito municipios e um milhao de hectares, caracteriza-se por ter grandes cafeicultores. O cafe e a principal cultura e, talvez, unica atividade agricola em escala comercial; Capelinha com dezesseis municipios numa area de 1,6 milhoes de hectares. Nesse polo predominam medios... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Cultivo; Brasil; Coffee; Cultivation; Minas Gerais.; Coffea Arábica; Cafeicultura; Café; Comercialização.; Cerrado; Brazil; Commercialization.. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/555302 |
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| CORDEIRO, C. M. T.; ABADIE, T.; BURLE, M. L.; ROCHA, D. M. S. da; COSTA, I. R. S.; FUKUDA, W. M. G.; VALLE, T. L.; BARRETO, J. F.; CARDOSO, E. M. R.; CAVALCANTI, J.; FIALHO, J. de F.; MARSCHALEK, R.. |
| 1999 |
| Tipo: Resumo em anais de congresso (ALICE) |
Palavras-chave: Mandioca; Manihot esculenta; Cassava; Brasil; Brazil; Conservacao de germoplasma; Germplasm conservation. |
| Ano: 1999 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1002979 |
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| SILVA, J. B.; FAGUNDES, G. M.; SOARES, J. P. G.; FONSECA, A. H.; MUIR, J. P.. |
| Health and production management strategies influence environmental impacts of dairies. The objective of this paper was to measure risk factors on health and production parameters on six organic and conventional bovine, caprine, and ovine dairy herds in southeastern Brazil over six consecutive years (2006?2011). The organic operations had lower milk production per animal (P≤0.05), lower calf mortality (P≤0.05), less incidence of mastitis (P≤0.05), fewer rates of spontaneous abortions (P≤0.05), and reduced ectoparasite loads (P≤0.05) compared to conventional herds and flocks. Organic herds, however, had greater prevalence of internal parasitism (P≤0.05) than conventional herds. In all management... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Brasil; Produção leiteira; Leite; Leite de cabra; Gado leiteiro; Cabra leiteira; Ovelha; Desenvolvimento sustentável; Milk production; Milk; Goat milk; Sheep; Sustainable development; Brazil. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/990775 |
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| Registros recuperados: 4.030 | |
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