Meristems
Mostrando 1-12 de 220 artigos, teses e dissertações.
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1. Morpho and Cytological Differentiation of Calli of Eucalyptus grandis x Eucalyptus urophylla During Somatic Embryogenesis
ABSTRACT The aim of this study was to induce and analyze embryogenic calli from two types of explants (leaves and meristems) of the hybrid Eucalyptus grandis x Eucalyptus urophylla. Leaves and meristems of plants kept in a nursery were disinfected and inoculated in Petri dishes containing MS culture medium supplemented with different concentrations of the gr
Braz. arch. biol. technol.. Publicado em: 14/11/2018
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2. Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
Morphological and physiological responses to freezing were evaluated in two ecotypes of the perennial turfgrass Paspalum vaginatum. Leaf extension rate, number of active meristems, leaf water potential and net photosynthesis were measured on plants of both a commercial cultivar, 'Sea Isle 2000', and a wild ecotype from the Flooding Pampa grasslands of Argent
Acta Bot. Bras.. Publicado em: 2016-03
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3. Carbon dioxide-enriched atmosphere enhances biomass accumulation and meristem production in the pioneer shrub Baccharis dracunculifolia (Asteraceae)
The increase in atmospheric CO2 concentration predicted to the end of this century may cause several alterations on plant species development, which shall result in changes in the structure and function of plant communities. The present work aimed to investigate the effects of the increase in atmospheric CO2 concentration on the development of Baccharis drac
Acta Bot. Bras.. Publicado em: 2014-12
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4. The etiological agent of cotton ramulosis represents a single phylogenetic lineage within the Colletotrichum gloeosporioides species complex
Ramulosis of cotton, caused by Colletotrichum gossypii var. cephalosporioides (CGC), is an important disease of cotton in Brazil. The main objective of this work was to test whether CGC is a phylogenetic species inside the Colletotrichum gloeosporioides species complex. A Bayesian inference phylogenetic analysis of a combined ITS and TUB2 dataset was conduct
Trop. plant pathol.. Publicado em: 2014-10
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5. Dynamics of forage accumulation in Elephant grass subjected to rotational grazing intensities
We assessed the accumulation dynamics of forage and its components in Elephant grass cv. Napier (Pennisetum purpureum Schum.) that were subjected to three post-grazing height treatments (30, 50, and 70 cm) from February through May 2009 (experiment one) and December 2009 through May 2010 (experiment two). In experiment one, the grazing events started when th
R. Bras. Zootec.. Publicado em: 2013-09
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6. Regulação do desenvolvimento e determinação do fruto de tomateiro (Solanum lycopersicum) pela via microRNA156/ SQUAMOSA Promoter-Binding Protein-Like (SPL) / MiR156targeted Squamosa Promoter-binding proteins (SPLs) regulate fruit development and determinacy
Many plants have indeterminate growth and are capable of producing new organs and tissues throughout their life. This capability is partially due to the highly regulated expression of specific genes such as SQUAMOSA Promoter-Binding Protein-Like (SPL) genes. SPLs encode plant-specific transcription factors that play important roles in development, such as ph
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/04/2012
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7. In vitro establishment and multiplication of the Normania triphylla (Lowe) Lowe
Normania triphylla is an endemic species from Madeira island (Portugal) extinct in the wild since 1991. The aim of this work was to culture the meristems of this species in vitro and to multiply its shoots in order to preserve this endangered species. The best results in terms of multiplication were obtained in Murashige and Skoog medium supplemented with 10
Brazilian Archives of Biology and Technology. Publicado em: 2012-08
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8. Sugar-mediated acclimation: the importance of sucrose metabolism in meristems.
2010
Journal of Proteome Research. Publicado em: 2011
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9. Producao de material vegetativo de videira livre de virus no submedio Sao Francisco.
Tem como objetivo produzir material vegetativo livre de virus das principais cultivares de videira de interesse comercial para o submedio Sao Francisco, proporcionando aos produtores e viveiristas da Regiao Nordeste do Brasil a possibilidade de disporem de mudas certificadas sadias e de elevada qualidade, evitando a disseminacao de viroses e, com isto, permi
Petrolina: EMBRAPA-CPATSA. Publicado em: 2011
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10. RegeneraÃÃo "in vitro", estudos histolÃgicos e transformaÃÃo genÃtica da momoneira (Ricinus communis) / "In vitro" regeneration, histologycal studies and genetic transformation of castor-bean (Ricinus communis)
Castor bean (Ricinus communis) is an oilseed crop with considerable economic value because of the composition of its oil seed. However, there are some constraints in your use for human and animal food because of the presence of toxic and allergenic proteins. This problem could be solved or reduced through genetic engineering. However, this crop is recalcitra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/02/2009
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11. Aspectos relacionados à competência organogenética de meristemas caulinares de Dendrobium Second Love (Orchidaceae) / Aspects of Dendrobium second love shoot meristems (Orchidaceae) related to organogenetic competence
In vitro tissues, organs or plants culture has been widely used as a micropropagation technique aiming to study a number of factors involved in vegetable growth and development. In the present study, we evaluated the physiological conditions related to different vegetative or reproductive organogenetic responses in in vitro Dendrobium Second Love (Orchidacea
Publicado em: 2009
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12. Desinfecção de explantes e cultivo in vitro de Piretro da Dalmácia (Chrysanthemum cinerariaefolium Vis. cv. Vacaria) / Pyrethrum (Chrysanthemum cinerariaefolium cv. Vacaria) explants disinfection and cultivation in vitro
The activities that involve floriculture have distinguished positively in the economic scenario of the Brazilian agribusiness. Among the plant species used for that purpose it can be distinguished the species belonging to the botanical family Asteraceae, mainly from the genus Chrysanthemum. The species C. cinerariaefolium Vis. is worldwide cultivated in orde
Publicado em: 2009