Propagação vegetativa com o uso de estacas herbáceas de Camu-camu (Myrciaria dubia (Kunth) Mc Vaugh) em câmara de subirrigação

• Ano de defesa: 2014
• Autor(a) principal: Andrade, Jeysse Kelly Carvalho de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Roraima; Brasil; PRPPG - Pró-reitoria de Pesquisa e Pós-Graduação; POSAGRO - Programa de Pós-Graduação em Agronomia; UFRR
• Palavras-chave em Português: Amazônia; Fruteira nativa; Estaquia; Fitorregulador; Amazon; Native tree fruit; Cuttings; Phytoregutator; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: http://repositorio.ufrr.br:8080/jspui/handle/prefix/575

The camu-camu has a high content of ascorbic acid and currently is awakening interest of several industrial sectors such as drug, cosmetic and alimentary. It is necessary to advance in the techniques of propagation of this species so it can become domesticated and become an important agricultural activity. The vegetative propagation by cuttings provides the formation of quality seedlings, securing desirable agronomic characteristics efficiently. Success in vegetative propagation by cuttings depends on environmental and endogenous factors. In this context, the aim of this study was to evaluate the production of camu-camu seedlings by softwood cuttings in subirrigation chamber. For this, three experiments were conducted, the first testing the effect of different concentrations (0, 200, 400, 600, 800 e 1000 mg L-1) and immersion times (5 seconds, 10, 20 e 30 minutes), using IBA. The second used the same factors and levels but with the use of NAA. In the third evaluated the rooting of different native populations of camu-camu. The experimental design of the first two experiments was completely randomized, factorial 6x4, with three replications and ten in each replication. The third experiment was completely randomized with 12 treatments and the treatments consisted of the populations BRB MU, BRB EV, RB BQ, RB LM, RJA, IAB, RQ, RJI, BRB ON, BRB AT, IPI, BRB AB. The subirrigation chamber proved be a suitable environment for vegetative propagation by rooting softwood cuttings of camu-camu as a form of clonal multiplication of superior genotypes. Greater success in vegetative propagation of camu-camu by rooting softwood cuttings obtained using 324,2 mg.L-1of IBA and 10 minutes of immersion. Greater success in vegetative propagation of camu-camu by rooting softwood cuttings obtained in the absence of NAA. Population variability exists in the capacity for rooting softwood cuttings of camu-camu. The populations IAB (100%), RJI (95%), IPI and RB BQ (92%), followed by populations RB LM (87,50%) and RJA (85%), were those with greater capacity for rooting.