Data/hora: 11/06/2024 06:40:21

Provedor de dados: | Ciência Rural
País: | Brazil
Título: | Vegetative rescue and ex vitro system production of Tibouchina sellowiana clonal plants by cutting and mini-cutting
Autores: | Fragoso,Rosimeri de Oliveira; Stuepp,Carlos André; Sá,Francielen Paola de; Kratz,Dagma; Zuffellato-Ribas,Katia Christina; Wendling,Ivar.
Data: | 2017-11-01
Ano: | 2017
Palavras-chave: | Auxin; Clonal mini-garden; Ornamental species; Rejuvenation; Vegetative propagation.
Resumo: | ABSTRACT: We aimed to evaluate the rooting potential of Tibouchina sellowiana through the experiments: I - Cuttings from current-year shoots and epicormic shoots were submitted to IBA concentrations: 0, 500, 1000, 1500 and 2000mg L-1, in a factorial arrangement 2 x 5 (two types of cuttings x five IBA concentrations), with four replicates and 20 cuttings each; II - mini-stumps of Tibouchina sellowiana were submitted to successive shoots collecting during the four seasons, in a split-plot design, with five replications of ten mini-stumps per experimental unit. From the shoots of mini-stumps, mini-cuttings were produced, which were initially kept in greenhouse and later transferred to full sun, in a 4 x 5 factorial arrangement (four seasons x five collections per season), with four replicates of 12 mini-cuttings. Superiority of epicormic shoots cuttings was reported when compared to the current-year shoots, which showed the highest rooting and leaves maintenance (42.50% and 55.00%, respectively), eliminating the use of IBA. High survival of mini-stumps (over 80%) and the mini-cuttings production (170mini-cuttings m-2 month-1) in clonal mini-garden and the mini-cuttings survival (above 80%) in the greenhouse demonstrated the technical feasibility, with summer as the most appropriate time to collect mini-cuttings.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100402
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20160098
Formato: | text/html
Fonte: | Ciência Rural  v.47 n.11 2017
Fonte: | info:eu-repo/semantics/openAccess