
<!-- @page { margin: 2cm } --> <p class="western" align="justify">Este trabalho teve por objetivo avaliar um protocolo para multiplicação in vitro para quatro genótipos de bananeira (<em>Musa spp.</em>) em escala comercial. Testes preliminares indicaram a utilização das concentrações ótimas de 5,0 mg L-1; 5,0 mg L-1; 4,5 mg L-1 e 4,0 mg L-1 de benzilaminopurina no meio de cultura MS, para a multiplicação dos genótipos Caipira, Thap maeo, PV03- 44 e FHIA-01, respectivamente. Em seguida, avaliou-se a taxa de multiplicação, o tamanho de brotos produzidos por explante, a taxa de contaminação por fungos e bactérias, a taxa de oxidação e a ocorrência de anormalidades durante as fases da multiplicação. A taxa de multiplicação e o tamanho de brotos por explante variou entre genótipos nos cinco subcultivos realizados. A taxa de contaminação mais elevada foi de origem bacteriana e mais freqüente na fase de estabelecimento in vitro, com tendência de redução à medida que foram realizados os subcultivos. A maioria dos genótipos não apresentou problemas de contaminação por microorganismos, exceto a cultivar Caipira que apresentou elevada taxa de contaminação por bactérias na fase de estabelecimento in vitro, o que representa uma limitação do protocolo para a multiplicação comercial desse genótipo.</p> <p class="western" align="left">PALAVRAS-CHAVE: <em>Musa spp.</em>; micropropagação; cultura de tecidos; benzilaminopurina.</p><!-- @page { margin: 2cm } --> <p class="western" align="justify">The purpose of this study was to evaluate a protocol for in vitro multiplication of four <em>Musa spp.</em> genotypes. Previous tests indicated the utilization of an ideal benzilaminopurin concentration of 5.0 mg L-1; 5.0 mg L-1; 4.5 mg L-1 e 4.0 mg L-1 in culture medium MS, during the multiplication of Caipira, Thap maeo, PV03-44 and FHIA-01 genotypes, respectively. After that, the multiplication rate, the size of shoots produced per explant, fungal and bacterial contamination rate, oxidation rate, and abnormality occurrence in the multiplication phases were evaluated. The multiplication rate and the size of shoots produced per explant varied among genotypes in the five subcultures studied. The highest contamination rate was caused by bacteria and was more frequent in the in vitro establishment, tending to be reduced with the number of subcultures. The most of the genotypes did not present problems of microorganism contamination, except for Caipira cultivar which presented high bacterial contamination rate during in vitro establishment. This problem is a limitation of the protocol to obtain micropropagated plantlets of this genotype.</p> <p class="western">KEY-WORDS: <em>Musa spp.</em>; micropropagation; tissue culture; benzilaminopurin.</p>
Musa spp., Agriculture (General), benzilaminopurina, micropropagação, cultura de tecidos, S1-972
Musa spp., Agriculture (General), benzilaminopurina, micropropagação, cultura de tecidos, S1-972
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
