A propagação do hibisco é feita preferencialmente por estaquia. Entretanto, o sucesso obtido nessa técnica depende dascondiçõesinternas e externas da estaca, que influenciarão diretamente em sua capacidade de enraizamento. Nesse sentido, objetivou-se avaliar o efeito de três tipos de estacas (apical, mediana e basal) e quatro concentrações de AIB (0, 1000, 3000 e 5000 mg L -1 ) na propagação via estaquia de Hibiscus rosa-sinensis L. cv. Snow Queen. O experimento foi conduzido em casa de vegetação sob nebulização intermitente na Universidade Federal do Piauí (UFPI), Campus Professora CinobelinaElvas, Bom Jesus-PI, no período de 23 de maio a 07 de julho de 2012. O delineamento experimental utilizado foi em blocos completamente casualizados, arranjados em esquema fatorial 3x4 (Tipo de estaca x Concentração de AIB) com quatro repetições. Aos 45 dias após a implantação do experimento foram avaliados: porcentagem de enraizamento, taxa de sobrevivência, número de brotos, número de folhas, comprimento médio da raiz, massa seca da parte aérea e massa seca de raiz. Não houve efeito significativo da interação entre os fatores estudados, havendo efeito apenas para tipo de estaca. A técnica de propagação via estaquia de Hibiscus rosa-sinensis L. cv. Snow Queen é eficiente mediante ao uso de estacas basais. Palavras-chave: auxinas, enraizamento, Hibiscus rosa-sinensisL. Vegetative Propagation of hibiscus with different types of cuttings and IBA concentrations AbstractThe propagation of the hibiscus is done preferably by cutting. However, the success of this technique depends on the internal and external conditions cuttings, that will influence directly into your rooting capacity. In this sense, the objective was to evaluate the effect of three types of cuttings (apical, middle and basal) and four concentrations of IBA (0, 1000, 3000 and 5000 mg L -1 ) in the propagation through cuttings of Hibiscus rosa-sinensisL. cv. Snow Queen. The experiment was conducted in a greenhouse under intermittent mist at the Federal University of Piauí (UFPI), Campus Profa. CinobelinaElvas, Bom Jesus-PI for the period from May 23 to July 7, 2012. The experimental design was completely randomized in a factorial arrangement 3x4 (Type of cuttings x Concentration IBA) with four replications. At 45 days after implantation of the experiment were evaluated: percentage of rooting, survival rate, number of shoots, number of leaves, average root length, dry weight of shoot and root dry weight. There was no significant interaction between the factors studied. There is effective for cutting type. The technique of propagation by cuttings of Hibiscus rosa-sinensis L. cv. Snow Queen is efficient through the use of basal cuttings.
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