MINI-CUTTING OF Eucalyptus benthamii: EFFECT OF THE GENOTYPE, IBA, ZINC, BORON AND SHOOTS COLLECTION

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Gilvano Ebling Brondani Francisco José Benedini Baccarin Tábata Bergonci Antonio Natal Gonçalves Marcilio de Almeida

Abstract

The aim of this study was to evaluate the induction of adventitious rooting in Eucalyptus benthamii mini-cuttings regarding to genotype, Zn and B concentrations, shoot collections and IBA application. Shoots for the mini-cuttings confection were collected from mini-stumps fertigated with nutrient solutions containing different concentrations of Zn and B (S1 – free of Zn and B, S2 – 0.5 mg L-1 Zn, S3 – 0.5 mg L-1 B, S4 – 0.5 mg L-1 Zn and B, S5 – 1.0 mg L-1 Zn and B, S6 – 2.0 mg L-1 Zn and B). The basal portion of the mini-cuttings was immersed for 10 s in a solution containing 2,000 mg L-1 IBA. A free IBA solution was used as control. The mini-cuttings survival in greenhouse, shade-house and in full sun area were evaluated. In full sun area, only the rooted mini-cuttings were evaluated, and of these, the total length of the root system was measured. The adventitious rooting of Eucalyptus benthamii mini-cuttings depended of the genotype, Zn and B concentrations, shoots collections and IBA application. In general, the adventitious rooting percentage was low, and the genotypes were considered difficult to propagation by mini-cuttings technique. The mini-cuttings collected of mini-stumps fertigated with nutrient solutions S5 (1.0 mg L-1 Zn and B) and S6 (2.0 mg L-1 Zn and B) associated with the presence of IBA in the concentration of 2,000 mg L-1 presented the greater adventitious rooting percentage. 

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How to Cite
BRONDANI, Gilvano Ebling et al. MINI-CUTTING OF Eucalyptus benthamii: EFFECT OF THE GENOTYPE, IBA, ZINC, BORON AND SHOOTS COLLECTION. CERNE, [S.l.], v. 20, n. 1, p. 147-156, apr. 2016. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/971>. Date accessed: 18 sep. 2019.
Keywords
Mini-cutting technique, rhyzogenesis, cloning, indole-3-butyric acid.
Section
Article