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| Registros recuperados: 124 | |
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| CHOUDHURY, M. M.. |
| As sementes, estacas, bulbos, tubérculos, etc., são órgãos de propagação vegetal e eficientes veículos de disseminação de fitopatógenos em campos agrícolas. Como as sementes contribuem com aproximadamente 90% para a propagação das culturas, muitos fungos, bactérias, virus e alguns fitonematóides podem apresentar-se associados as mesmas, causando severos danos as culturas. Estes fitopatógenos, em condições favoraveis, sobrevivem nas sementes de um ano para outro; ou por período mais longo durante o armazenamento. São apresentados no trabalho os danos causados por sementes infectadas ou contaminadas, os meios de disseminação de fitopatógenos pelas sementes e como evitar a introdução de doenças na região. Com relação a colheita, dois aspectos básicos devem... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Propagação; Seed; Diseases; Propagation; Disease.; Planta; Doença; Semente.. |
| Ano: 1982 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131789 |
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| Lurton, Xavier. |
| Sound waves are the only practical means of remote investigation and transmission in seawater. All along the XXth century, underwater acoustics became one of the major technologies used for exploration and exploitation of the oceans for scientific, industrial, or military purposes. It is nowadays able to play, inside the oceans, the roles devoted to radio and radar in atmosphere and space, and is widely employed in the fields of navigation, fisheries, defence, oceanography and ocean engineering. This book presents, in a clear and concise way, the basic physical phenomena governing underwater acoustical waves, the general features of sonar systems, and an overview of their applications. |
| Tipo: Text |
Palavras-chave: Acoustique sous-marine; Propagation; Traitement du signal; Sonar; Sondeur; Underwater acoustics; Propagation; Signal processing; Sonar; Echosounder. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00017/12790/9731.pdf |
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| COSTA,BÁRBARA N.S.; COSTA,IRTON J.S.; SOUZA,GENAINA A. DE; SANTOS,DALILHIA N. DOS; SILVEIRA,FLÁVIA A. DA; MELO,EVALDO T. DE; MARTINS,ADALVAN D.; PASQUAL,MOACIR; SETOTAW,TESFAHUN A.; RODRIGUES,FILIPE A.. |
| Abstract The jelly palm plant [Butia capitata (Martius) Beccari] is a native palm of the Cerrado biome used for many purposes in northern Minas Gerais State, Brazil. Dormancy is common in palm seeds, resulting in slow and uneven germination that may take years to complete. Modification in the growth pattern, anatomical parameters, physiological and biochemical characteristics of the plant can be verified due to changes in the light spectrum transmitted through colored shade nets used. Therefore, the objective of this study is to evaluate the effect of colored shade nets on the leaf and root anatomy of the jelly palm plant. The experiment was performed in a completely randomized design, with five treatments, ten replicates and eight plants per replicate,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Environment; Palms; Propagation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703615 |
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| Sasamori,Márcio Hisayuki; Endres Júnior,Delio; Droste,Annette. |
| ABSTRACTCattleya intermediais an Atlantic Forest species endemic to Brazil that is classed as vulnerable on the list of threatened species. In this study, C. intermedia plantlets were micropropagated in an asymbiotic culture and the influence of different concentrations of sucrose (15, 30, 45 and 60 g L-1, plus a zero sucrose medium) and macronutrient salts (complete Murashige and Skoog (MS) medium and half MS medium (with half-strength macronutrients)) on survival and development of the plantlets was evaluated. In all treatments 100% plantlet survival was achieved. The integrated analysis of height of aerial part, number of leaves per plantlet, fresh mass, number of roots per plantlet and length of the longest root showed that the plantlets exhibited... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Carbohydrate; Conservation; In vitro culture; Orchids; Propagation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000300292 |
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| ARAUJO, F. P. de; SANTOS, C. A. F.; PORTO, E. R.. |
| Com o objetivo de avaliar o desenvolvimento de plantas matrizes de umbuzeiro, para o fornecimento de propagulos vegetativos, foi conduzido um experimento em condicoes irrigadas, no Campo Experimental de Bebedouro pertencente a Embrapa Semi-Arido em Petrolina-PE. O experimento foi instalado no mes de fevereiro de 1999. O delineamento utilizado foi em blocos ao acaso com quatro tratamentos, em dois metodos de enxertia por garfagem (fenda cheia e a inglesa simples): um de borbulhia ("T" invertido) e outro de mudas propagadas por estaquia. Os garfos e as estacas usadas no experimento foram provenientes de plantas que corresponde a um clone de umbu gigante, selecionado para maior tamanho de fruto. As variaveis observadas foram altura de plantas, diametro e... |
| Tipo: Parte de livro |
Palavras-chave: Propagacao; Enxertia; Propagation; Grafting.; Umbu; Spondias Tuberosa.. |
| Ano: 2001 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/134447 |
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| Morais-Lino,Lucymeire Souza; Santos-Serejo,Janay Almeida dos; Silva,Sebastião de Oliveira e; Santana,José Raniere Ferreira de; Kobayashi,Adilson Kenji. |
| The objective of this study was to establish cell suspension culture and plant regeneration via somatic embryogenesis of a Brazilian plantain, cultivar Terra Maranhão, AAB. Immature male flowers were used as explant source for generating highly embryogenic cultures 45 days after inoculation, which were used for establishment of cell suspension culture and multiplication of secondary somatic embryos. Five semisolid culture media were tested for differentiation, maturation, somatic embryos germination and for plant regeneration. An average of 558 plants per one milliliter of 5% SCV (settled cell volume) were regenerated in the MS medium, with 11.4 µM indolacetic acid and 2.2 µM 6-benzylaminopurine. Regenerated plants showed a normal development, and no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa; Culture media; Propagation; Somatic embryogenesis. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008001000010 |
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| RODRIGUES, I. A.; ALVES, S. de M.; ROCHA NETO, O. G. da; SANTIAGO, E. J. A. de; CARVALHO, C. J. R. de; KAMAKURA, H.; SHIROTA, O.; IZUMI, H.; WATANABE, T.; KAWAGUCHI, K.. |
| Tipo: Parte de livro |
Palavras-chave: Coleta; Propagação; Conservação de germoplasma; Ipeca; Pilacarpus jaborandi; Brasil; Drug plants; Propagation; Adaptation.; Aclimatação; Cephaelis Ipecacuanha; Jaborandi; Planta Medicinal.; Amazonia; Germplasm conservation; Plant collections.. |
| Ano: 1996 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/394877 |
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| Registros recuperados: 124 | |
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