Micropropagação das bananeiras Prata Anã e FHIA 01 a partir de explantes provenientes de plantas tratadas com paclobutrazol

• Ano de defesa: 2007
• Autor(a) principal: Souza, Djalmary de Souza e
• Orientador(a): Siqueira, Dalmo Lopes de
• Banca de defesa: Finger, Fernando Luiz , Silva, Derly José Henriques da , Bruckner, Claudio Horst , Silva, José Ferreira da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Fitotecnia
• Departamento: Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de
• País: BR
• Palavras-chave em Português: Musa spp.; Micropropagação; Reguladores de crescimento
• Palavras-chave em Inglês: Musa spp.; Micropropagation; Growth regulators
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA
• Link de acesso: http://locus.ufv.br/handle/123456789/4464

With the objective of evaluating the effect of the paclobutrazol (PBZ) applied in banana trees 'Prata Anã' and 'FHIA 01' about the establishment, sprouting and development in vitro of explants originated from this plants, this experiment was conduced at Laboratory of Tissue and Cells Culture, Pomology Section, DFT/UFV. Factorial outline 2 x 5 was used, corresponding to the two cultivars ('Prata Anã' and 'FHIA 01') and five doses of PBZ (0.0, 0.5, 1.0, 1.5 and 2.0 g i.a. plant-1), in an complete random design, with different number of replicates. It was evaluated the rate of sprouting, height and diameter of the aerial part, number of leaves, fresh and dry mass of the aerial part, intensity of the green color, percentage of rooting, number of roots, length of the largest root, fresh and dry mass of the roots, and mass of the roots:mass of the aerial part relation. The height of the aerial part started to be reduced from the dose of 1.13 g i.a. plant-1 in both cultivars. The diameter was not altered with the increase of the doses, but in the explants of the 'Prata Anã' it was observed larger diameters compared to 'FHIA 01'. The number of leaves, the dry and fresh weight did not suffer alterations among the different doses, nor between cultivars. The intensity of the green color increased linearly with the increase of the dose in both cultivars. Starting from the dose 1.07 g i.a. plant-1 the rate of sprouting for 'Prata Anã' was inhibited, while there was an enhancement of the rate for 'FHIA 01' starting at dose of 0.85 g i.a. plant-1. There was significant interaction for the percentage of rooting, with lower values for the cultivar 'Prata Ana' (64.71%) compared to 'FHIA 01' (95.83%) for the higher dose of PBZ. It was not observed effect of the doses of PBZ about the percentage of rooting of the explants of the cultivar 'Prata Anã', while for 'FHIA 01' there was linear increase with the dose elevation, with the largest rooting value of 95.18%. The other characteristics there was linear increase with the increment of PBZ doses, for both cultivars.