ENRAIZAMENTO DE MINIESTACAS APICAIS, INTERMEDIÁRIAS E BASAIS EM CLONES DE Eucalyptus benthamii
Author(s) -
Cristiane Carla Benin,
Fabiana Schmidt Bandeira Peres,
Flávio Augusto de Oliveira Garcia
Publication year - 2013
Publication title -
floresta
Language(s) - Portuguese
Resource type - Journals
SCImago Journal Rank - 0.386
H-Index - 13
eISSN - 1982-4688
pISSN - 0015-3826
DOI - 10.5380/rf.v43i3.28542
Subject(s) - cutting , horticulture , eucalyptus , biology , botany
Este trabalho teve como objetivo avaliar o enraizamento de miniestacas apicais, intermediarias e basais de Eucalyptus benthamii Maiden et Cambage. As miniestacas utilizadas foram coletadas de minicepas estabelecidas a partir de mudas de origem seminal. O experimento foi conduzido no delineamento inteiramente casualizado, em arranjo fatorial 4x3, sendo os fatores constituidos por quatro clones de E. benthamii (C50, C51, C52 e C53) e tres tipos de miniestacas, confeccionadas das porcoes apical, intermediaria e basal das brotacoes. Avaliou-se a sobrevivencia e o enraizamento das mudas aos 45 dias de idade, em casa de sombra, e aos 90 dias em fase de pleno sol. Avaliou-se ainda a altura das mudas aos 90 dias de idade. Ao final das avaliacoes, o clone C52 se destacou dos demais em termos de sobrevivencia, enraizamento e crescimento em altura. Na fase de pleno sol, quando as mudas ja haviam completado o ciclo de desenvolvimento, a miniestaca apical comprovou ser o tipo de propagulo com maior aptidao ao enraizamento entre todos os clones avaliados. Abstract Rooting of apical, intermediate and basal minicuttings in clones of Eucalyptus benthamii. This study aimed to evaluate the rooting of apical, intermediate and basal ministumps of Eucalyptus benthamii Maiden et Cambage. The minicuttings were collected from ministumps originated from seedlings. The experiment was conducted in a completely randomized design, in a 4x3 factorial arrangement with factors consisting of four clones of E. benthamii (C50, C51, C52 e C53) and three types of cuttings (apical, intermediate and basal). The survival and rooting were evaluated with 45 days in shadow house, and 90 days in the full sun stage. In the end of the evaluations, the clone C52 proved to be better in survival, rooting and height growth. In full sun stage, when the seedlings completed the development cycle, the apical minicutting proved to be the kind of propagules with grater aptitude on rooting when compared with the others clones. Keywords: Minicutting; types of cuttings; clonal propagation.
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