IBA application for rooting of Eucalyptus benthamii Maiden and Cambage x Eucalyptus dunnii Maiden minicuttings


Autoria(s): BRONDANI, Gilvano Ebling; GROSSI, Fernando; WENDLING, Ivar; DUTRA, Leonardo Ferreira; ARAUJO, Marla Alessandra
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

18/10/2012

18/10/2012

2010

Resumo

IBA application for rooting of Eucalyptus benthamii Maiden and Cambage x Eucalyptus dunnii Maiden minicuttings. Eucalyptus has great importance in the forestry sector and many advances in the area of improvement have been achieved with the advent of biotechnological techniques. However, some promising genotypes still do not have multiplication protocols with cloning techniques, such as minicutting. The study aimed to evaluate IBA concentrations for survival, rooting and vegetative vigor of E. benthamii x E. dunnii minicuttings, and determine the maximum technical efficiency dose. Ministumps H12, H19 and H20 clones were cultivated in a clonal minigarden under a semi-hydroponic system. For rooting, the rninicutting basal portion was plunged in hydro-alcoholic solutions, whose concentrations were: 0; 2,000; 4,000; 6,000 and 8,000 mg L(-1) of IBA. The experiment was conducted in a completely randomized design, with the factors consisting of three clones and five IBA concentrations, with five replications, containing 10 minicuttings per replication. IBA positively influenced the minicutting rooting processes, with differentiated behavior between the clones, with 30.32 to 55.45% rooting variation. The positives increments occurred until the highest IBA concentration for H12 and H19 clones. However, the range between 4,000 and 6,000 mg L(-1) of IBA treatments promoted the best rooting results for the H20 clone.

Identificador

ACTA SCIENTIARUM-AGRONOMY, v.32, n.4, p.667-674, 2010

1679-9275

http://producao.usp.br/handle/BDPI/19345

10.4025/actasciagron.v32i4.4879

http://dx.doi.org/10.4025/actasciagron.v32i4.4879

Idioma(s)

por

Publicador

UNIV ESTADUAL MARINGA, PRO-REITORIA PESQUISA POS-GRADUACAO

Relação

Acta Scientiarum-agronomy

Direitos

restrictedAccess

Copyright UNIV ESTADUAL MARINGA, PRO-REITORIA PESQUISA POS-GRADUACAO

Palavras-Chave #cloning #vegetative propagation #indolebutyric acid #growth regulator #superior genotype multiplication #Agronomy
Tipo

article

original article

publishedVersion