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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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| Batista,Tânia Regna; Mendonça,Evânia Galvão; Pádua,Marlúcia Souza; Stein,Vanessa Cristina; Paiva,Luciano. |
| 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 growth regulator dicamba (1.13, 4.52, and 9.04 µM) and without it. At 60 days of culturing, the calli were analyzed by scanning electron microscopy and at 90 days were evaluated by light microscopy in regard to the embryogenic characteristics of the cells. Different type of calli were induced in leaf explants, designated as Type I with light yellow coloring, Type II with dark yellow coloring, and Type III... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomical analyses; Dicamba; Eucalyptus; Somatic embryos; Ultrastructural analyses. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100430 |
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| Bicalho,Karine Cristina; Oliveira,Luiz Edson Mota de; Santos,João Bosco dos; Mesquita,Alessandro Carlos; Mendonça,Evânia Galvão. |
| A seringueira [Hevea brasiliensis (Willd. ex. Adr. de Juss) Muell.-Arg.] é uma espécie nativa da região amazônica e compreende a maior fonte produtora de borracha natural do mundo. Na busca de condições mais favoráveis ao cultivo, além da busca pela auto-suficiência na produção de borracha natural, o cultivo da seringueira migrou para outras regiões do país. Objetivou-se, com o presente trabalho, estimar a similaridade genética de genótipos de seringueira, provenientes de regiões distintas do país, Lavras-MG (UFLA) e Campinas-SP (IAC), por meio de marcadores moleculares RAPD. A análise foi efetuada em 41 indivíduos, representados por 17 genótipos diferentes, com base em 19 primers, que geraram 121 fragmentos polimórficos. Os dados foram analisados... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marcador de DNA; Diversidade genética; Germoplasma; Identidade genética. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542008000500023 |
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