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| Registros recuperados: 48 | |
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| FARI, M.; RESENDE, G. M. de; MELO, N. F. de. |
| Este trabalho teve por objetivo avaliar a capacidade de regeneracao das cultivares de tomateiro industrial (Lycopersicon esculentum Mill) IPA-5 e IPA-6, utilizando quatro composicoes de meio de cultura descritos na literatura e cinco variacoes de inoculacao. Foi testada uma nova variacao de inoculacao, denominada cotiledone fendido. A maior frequencia de formacao de gemas vegetativas foi 100% no caso de IPA-5, e 65% no caso de IPA-6. Para induzir o alongamento de brotos, foram necessarios tres subcultivos dos explantes apresentando gemas. No caso de IPA-5, o numero de brotos obtidos foi maior quando a inducao de gemas foi realizada em meio contendo BAP e AIA seguido de tres subcultivos, em meio como zeatina. Usando esse protocolo, a cultivar IPA-5 produziu... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Tomate; Variedade; Organogenese; Cultura de tecido; Explante; Cotiledone; Transformacao genetica; Lycopersicon esculentum; Tomatoes; Varieties; Organogenesis; Tissue culture; Cotyledons; Explants; Genetic transformation. |
| Ano: 2000 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/134062 |
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| Mello,Marcia O.; Melo,Murilo; Appezzato-da-Glória,Beatriz. |
| Plant regeneration was achieved from cells of callus induced from hypocotyl segments of Bauhinia forficata on half strength Murashige and Skoog culture medium supplemented with several concentrations of BAP. Within 40 days of culture shoot buds formation was observed on callus surface. Calli were then transferred to a same composition culture medium without plant growth regulator in order to induce shoot elongation. Histological studies indicated that in vitro plant regeneration in B. forficata occurred through indirect organogenesis. Meristemoids consisting of small cells with dense cytoplasm and prominent nuclei were randomly distributed throughout the callus surface indicating early stages of shoot bud differentiation. Shoots developed de novo from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tissue culture; Organogenesis; Anatomy. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400013 |
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| Encina,Carlos Lopez; Martin,Elisabeth Carmona; Lopez,Antonio Arana; Padilla,Isabel Maria Gonzalez. |
| Annonaceae is an ancient family of plants including approximately 50 genera growing worldwide in a quite restricted area with specific agroclimatic requirements. Only few species of this family has been cultivated and exploited commercially and most of them belonging to the genus Annona such as A. muricata, A. squamosa, the hybrid A. cherimola x A. squamosa and specially Annona cherimola: the cherimoya, commercially cultivated in Spain, Chile, California, Florida, México, Australia, Ecuador, Peru, Brazil, New Zealand and several countries in South and Central America. The cherimoya shows a high degree of heterozygosis, and to obtain homogeneous and productive orchards it is necessary to avoid the propagation by seeds of this species. Additionally, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annona; In vitro; Micropropagation; Protoplasts; Organogenesis; Polyploidy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000500002 |
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| Erisen,Semiha; Yorgancilar,Mustafa; Atalay,Emine; Babaoglu,Mehmet; Duran,Ahmet. |
| A callus induction and plant regeneration protocol was developed from leaf and petiole explants of the endemic Astragalus nezaketae. Explants were cultured on Murashige and Skoog medium (MS) supplemented with different plant growth regulators (PGRs) [?-naphthaleneacetic acid (NAA), benzyladenine (BA), 2,4-dichlorophenoxyacetic acid (2,4-D), kinetin (Kin), thidiazuron (TDZ)]. The combinations and concentrations of PGRs were shown significant variations for the frequency of callus formation, appearence of callus and the potential of callus differentiation. NAA x BA have been found highly affective in callusing and plant regeneration. Other PGRs have not resulted in callus differentiation for shoot formation. The highest number of shoots (6/explants) was... |
| Tipo: Journal article |
Palavras-chave: Astragalus; Callus; Organogenesis; Plant regeneration. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000600013 |
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| Klimek-Chodacka,Magdalena; Baranski,Rafal. |
| Background: Haploid plant material is considered as recalcitrant to organogenesis, propagation, and maintenance in vitro. However, sugar beet (Beta vulgaris L.) breeders utilizing doubled haploid (DH) technology in their breeding programs indicate that sugar beet haploids may be cultured in vitro as well as diploids. Thus in this paper the in vitro performance of haploid and the doubled haploid sugar beet of various origin was evaluated. The DHs were derived from haploids by diploidization and twelve such haploid and corresponding DH clone pairs were obtained thus the comparison included haploid and DH clones that had identical allelic composition and differed only in their ploidy level. Results: The genotypes differed in shoot morphology and... |
| Tipo: Journal article |
Palavras-chave: Adventitious buds; Axillary shoots; Beta vulgaris; Organogenesis; Ploidy. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200001 |
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| Galis, Frietson; Sinervo, Barry. |
| The early stages of organogenesis in metazoans differ drastically between higher order taxa such as phyla and classes. The segmented germ band stage in insects, the nauplius stage of crustaceans, and the neurula/pharyngula stage in vertebrates are examples of this diversification. In striking contrast with this divergence, is the similarity of these stages within these taxa, i.e., within insects, crustaceans, and vertebrates. The early stages of organogenesis, or phylotypic stages, have, thus, remained very similar in most species since the evolutionary origin of the taxa. These phylotypic stages are considerably more similar to each other than to the earlier stages of cleavage and gastrulation. Cleavage and gastrulation stages display not only great... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Evolutionary conservation; Pleiotropy; Cleavage; Gastrulation; Organogenesis; Multicellularity; Phylotypic stage. |
| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/534407 |
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| Brondani, Gilvano Ebling; Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ/USP); Wendling, Ivar; Empresa Brasileira de Pesquisa Agropecuária (Embrapa - Florestas); Brondani, André Ebling; Universidade Federal Fluminense; Araujo, Marla Alessandra; Universidade Federal de Lavras; Silva, André Luís Lopes da; Universidade Federal do Paraná; Gonçalves, Antonio Natal; Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo. |
| It is possible to determine the optimum time for permanence of vegetative propagules (mini-cuttings) inside a greenhouse for rooting, and this value can be used to optimize the structure of the nursery. The aim of this study was to determine the dynamics of adventitious rooting in mini-cuttings of three clones of Eucalyptus benthamii x Eucalyptus dunnii. Sprouts of H12, H19 and H20 clones were collected from mini-stumps that were planted in gutters containing sand and grown in a semi-hydroponic system. The basal region of the mini-cuttings was immersed in 2,000 mg L-1 indole-3-butyric acid (IBA) solution for 10 seconds. The rooting percentage of the mini-cuttings, the total length of the root system and the rooting rate per mini-cutting were also evaluated... |
| Tipo: Pesquisa |
Palavras-chave: 5.01.03.04-0 vegetative propagation; Clonal forestry; Organogenesis; Mathematical modeling; Rhizogenesis; Clonal mini-garden 5.01.03.04-0. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13059 |
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| Mendonça,Evânia Galvão; Paiva,Luciano Vilela; Stein,Vanessa Cristina; Pires,Marinês Ferreira; Santos,Breno Régis; Pereira,Fabricio José. |
| The objective of this work was to elucidate the growth curve of Eucalyptus camaldulensis Dehn. calli analyzing their anatomical modifications. A sigmoid aspect of the growth curve of the calli fresh matter was observed, with five different phases (lag, exponential, linear, deceleration and decline). In the lag phase, the highest growth percentage 87%, was observed, which reduced during the evaluation period to 17% in the linear phase. As for the anatomical analyses, cellular multiplications was observed during the lag and exponential phases and increase in cell size during the linear phase, promoting the calli volume growth and the establishment of the globular conformation. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: In vitro cultivation; Organogenesis; Anatomy; Astra blue; Safranin; Forestry. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600012 |
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| OLIVEIRA, M. L. P. de; COSTA, M. G. C.; SILVA, C. V. da; OTONI, W. C.. |
| Abstract ? The objective of this study was to evaluate the effects of 6-benzylaminopurine (BAP) and ?-naphthaleneacetic acid (NAA) combinations, basal media and beta-lactam antibiotics on in vitro organogenesis from mature stem segments of 'PÛra', 'ValÛncia' and 'Bahia' sweet oranges and 'Cravo' rangpur lime. For induction of shoot regeneration, the segments of the four cultivars were placed on Murashige and Skoog (MS) medium containing the following BAP/NAA concentrations: 0.0/0.0; 0.25/0.0; 0.25/0.25; 0.5/0.0; 0.5/0.5; 1.0/0.0; 2.0/0.0; 2.0/0.25; 2.0/0.5; and 2.0/1.0ámgáL-1. In order to test the influence of the culture media on shoot-bud induction, (MS), Murashige and Tucker (MT), and woody plant medium (WPM) formulations were evaluated, associated with... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: C. sinensis; Adult tissues; Citrus limonia; Antibiotics; Organogenesis. |
| Ano: 2010 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/864099 |
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| Oliveira,Maria Luiza Peixoto de; Costa,Marcio Gilberto Cardoso; Silva,Crislene Viana da; Otoni,Wagner Campos. |
| The objective of this study was to evaluate the effects of 6-benzylaminopurine (BAP) and α-naphthaleneacetic acid (NAA) combinations, basal media and beta-lactam antibiotics on in vitro organogenesis from mature stem segments of 'Pêra', 'Valência' and 'Bahia' sweet oranges and 'Cravo' rangpur lime. For induction of shoot regeneration, the segments of the four cultivars were placed on Murashige and Skoog (MS) medium containing the following BAP/NAA concentrations: 0.0/0.0; 0.25/0.0; 0.25/0.25; 0.5/0.0; 0.5/0.5; 1.0/0.0; 2.0/0.0; 2.0/0.25; 2.0/0.5; and 2.0/1.0 mg L-1. In order to test the influence of the culture media on shoot-bud induction, (MS), Murashige and Tucker (MT), and woody plant medium (WPM) formulations were evaluated, associated with the best... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus limonia; C. sinensis; Adult tissues; Antibiotics; Organogenesis. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000700004 |
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| Registros recuperados: 48 | |
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