Indol-3-butyric acid (IBA) in rooting of fedegoso gigante cuttings

• Autor(a) principal: Lafetá, Bruno Oliveira
• Data de Publicação: 2016
• Outros Autores: de Matos, Milena Pimenta, Lage, Patrícia, Ferraro, Ana Carolina, Penido, Tamires Mousslech Andrade
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1084
• topic: Herbácea; Rizogênese; Semilenhosa; Herbaceous; Rhizogenesis; Semihardwood

Indole-3-butyric acid (IBA) is a plant growth regulator widely used to induce rooting of cuttings. The objective of this work was to evaluate the effect of different concentrations of IBA and of two cuttings types in vegetative propagation of Senna alata (Linnaeus) Roxburgh. The experiment was established in a completely randomized design with four repetitions, in factorial 4 x 2, using four concentrations of AIB: T1 – 0 mg L-1 (control); T2 – 250 mg L-1; T3 – 500 mg L-1 and T4 – 1,000 mg L-1 and two cuttings types (E1 – herbaceous and E2 – semi-hardwood). Each experimental unit consisted of 12 cuttings. The studied growth regulator concentrations did not influence seedlings root and aerial systems development and, therefore, the survival in shade house. In greenhouse, herbaceous cuttings lost less remaining leaves after leaf area reduction (27.88%) and, consequently, had higher survival (99.44%) when were kept in shade house. Herbaceous cuttings can be recommended for vegetative propagation of S. alata.