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Open AccessJournal ArticleDOI

Estabelecimento, multiplicação e alongamento in vitro de Eucalyptus benthamii Maiden & Cambage x Eucalyptus dunnii Maiden

TLDR
Neste trabalho foram testadas diferentes concentracoes de cloro ativo na assepsia de explantes para o estabelecimento in vitro e a concentracao de BAP resultou na maior proliferacao de gemas axilares para o clone H12 aos 60 dias.
Abstract
Neste trabalho foram testadas diferentes concentracoes de cloro ativo (NaOCl) na assepsia de explantes para o estabelecimento in vitro, bem como benzilaminopurina (BAP) e acido naftalenoacetico (ANA) para a multiplicacao e alongamento de Eucalyptus benthamii x Eucalyptus dunnii. As minicepas fornecedoras de propagulos para introducao in vitro foram conduzidas em minijardim clonal sob sistema semi-hidroponico. Segmentos nodais dos clones H12, H19 e H20 foram desinfestados com 0,5; 1,0; 1,5; e 2,0% (v/v) de cloro ativo durante 10 min e inoculados em meio de cultura MS. Na obtencao de brotacoes multiplas, utilizou-se o meio de cultura ½MS suplementado com 0; 0,25; 0,50; 0,75; e 1,0 mg L-1 de BAP. Na fase de alongamento, utilizou-se o meio de cultura ½MS com 0; 0,25; 0,50; 0,75; e 1,0 mg L-1 de ANA. Nao houve interacao entre os fatores estudados, obtendo-se 45%, 46% e 66% de estabelecimento do clone H12, H19 e H20, respectivamente. A concentracao de BAP que resultou na maior proliferacao de gemas axilares para o clone H12 aos 60 dias foi estimada na faixa de 0,25 e 0,30 mg L-1. Aos 60 dias, a faixa entre 0,25 e 0,75 mg L-1 de ANA promoveu o maior numero de brotacoes alongadas do clone H12.

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Journal ArticleDOI

Micropropagation of Eucalyptus benthamii to form a clonal micro-garden

TL;DR: A method for cloning selected genotypes of E. benthamii using a micropropagation technique, enabling the formation of a clonal micro-garden, and normal development of adventitious roots showing a vascular connection with the vascular cambium is shown.
Journal ArticleDOI

Tissue culture of Corymbia and Eucalyptus.

TL;DR: Tissue culture methods such as shoot culture, organogenesis, and somatic embryogenesis are described for micropropagating eucalypts and the use of cool storage, encapsulation, and cryopreservation methods for preserving eucallypt germplasm and delaying tissue maturation under minimal-growth conditions are discussed.
Journal ArticleDOI

A Micropropagação de Eucalipto

TL;DR: A micropropagacao de eucalipto e estrategica para manter material vegetal superior in vitro ou para abastecer o microjardim clonal, dificuldade de encontrar o meio adequado para a especie desejada, como resultado do uso of fitorreguladores.
Journal ArticleDOI

Vegetative rescue and cloning of Eucalyptus benthamii selected adult trees

TL;DR: The present study aimed to evaluate the vegetative rescue after the selection of phenotypes with superior silvicultural characteristics to clone adult trees of E. benthamii, evaluating which technique presented the best cloning result.
Journal ArticleDOI

Micropropagation of Eucalyptus cloeziana mature trees

TL;DR: The ex vitro rooting and acclimatisation of micro-cuttings were successful in mini-incubators—adventitious roots formed directly on explants, providing propagules to establish a clonal micro-garden of E. cloeziana select adult trees.
References
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Journal ArticleDOI

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