multiplicação e enraizamento in vitro de amoreira-preta 'xavante': efeito da concentração de sais, do tipo de explante e de carvão ativado no meio de cultura blackberry 'xavante' in vitro multiplication and rooting: salt concentrations effect, explant type, and activated coal on culture medium

Clicks: 247
ID: 173080
2009
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Abstract
Atualmente, além da propagação tradicional, a micropropagação da amoreira-preta é considerada uma alternativa viável, com o intuito de obter-se plantas livres de vírus, geneticamente uniformes e em curto espaço de tempo. Objetivou-se, com este experimento, determinar o melhor tipo de explante e concentração de sais para a multiplicação in vitro e a melhor concentração de carvão ativado e de sais no meio de cultura, para o enraizamento in vitro de amoreira-preta 'Xavante'. O primeiro experimento constituiu-se de segmentos nodais caulinares com cerca de 1 cm, oriundas do cultivo in vitro, inoculadas em quatro diferentes concentrações de meio MS, suplementada com 7,5 µM de BAP, 30 g L-1 de sacarose, 100 mg L-1 de mio-inositol e 6 g L-1 de ágar, e dois tipos de explante, totalizando 8 tratamentos. O segundo experimento constituiu-se de microestacas apicais, com cerca de 1 a 1,5 cm de comprimento, e duas folhas, inoculadas em três diferentes concentrações de meio MS, acrescido de 30 g L-1 de sacarose, 100 mg L-1 de mio-inositol e 6 g L-1 de ágar e suplementado com três concentrações de carvão ativado, totalizando nove tratamentos, com delineamento inteiramente casualizado. Pode-se concluir que o T1, ou seja, explante com folhas, na concentração de 125% de sais do meio MS foi mais eficiente, induzindo maior número de folhas, gemas, brotações e comprimento das brotações e que o uso de 75% de sais sem a suplementação de carvão ativado é o mais indicado para o enraizamento in vitro de amoreira-preta 'Xavante'.
Besides the traditional propagation, blackberry micropropagation has currently been considered a feasible alternative, with the purpose of obtaining plants free from virus, genetically uniform and in the short run. The objective of this experiment was to determine the best explant type and the optimum in vitro multiplication salts concentration as well as to determine the activated coal and salts optimum concentrations in culture medium for. The first experiment constituted of nodal segments with 1 cm, originated from of the in vitro cultivation, inoculated at four different MS medium concentrations, supplemented with 7.5 µM BAP, 30 g L-1 sucrose, 100 mg L-1 myo-inositol and 6 g L-1 agar, and with two types of explants, which totaled 8 treatments. The second experiment constituted of apex microcutting, having about 1 to 1.5 cm length, and two leaves were inoculated at three different concentrations of MS medium, added of 30 g L-1 sucrose, 100 mg L-1 myo-inositol and 6 g L-1 agar and supplemented with three different activated coal concentrations, totaling nine treatments. It can be inferred that T1, in other words, explants with leaves, were more efficient at 125% MS salt concentration on culture medium, thereby inducing larger number of leaves, buds, shoots and shoot length, and that the use of 75% salt concentration without activated coal is the most suitable one for the blackberry 'Xavante' in vitro rooting.
Reference Key
leitzke2009cinciamultiplicao Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Luciane Nolasco Leitzke;Cláudia Roberta Damiani;Márcia Wulff Schuch
Journal information and software technology
Year 2009
DOI
10.1590/S1413-70542009000700045
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000700045
Keywords
tissue culture

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