SciELO - Scientific Electronic Library Online

 
vol.35 issue5Germination of Caesalpinia pyramidalis Tul. seeds (Catingueira) under water deficitProjection of yield and distribution diametrical of eucalyptus stands with different forms of weibull function author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista Árvore

Print version ISSN 0100-6762

Abstract

GOULART, Patrícia Bueno; XAVIER, Aloísio  and  DIAS, José Maria Moreira. Effect of cofactors hydroquinone, proline and tryptophane on the rooting of mini-cuttings of Eucalyptus grandis x E. urophylla clones. Rev. Árvore [online]. 2011, vol.35, n.5, pp.1017-1026. ISSN 0100-6762.  http://dx.doi.org/10.1590/S0100-67622011000600007.

The objective of the present work was to evaluate the efficiency of the hydroquinone, proline and tryptophane cofactors, associated with IBA growth regulator on vegetative propagation by the rooting of mini-cuttings of four clones of Eucalyptus grandis x E. urophylla. The mini-cuttings were collected in a mini-clonal hedge grown in a hydroponic system in small gutters. It was used a complete random experimental design, with four replicates and plots of 16 plants per replicate. Evaluations of rooted mini-cuttings were carried out in a greenhouse, in a shade house and in the open sun. It was concluded that the tryptophane (0.80 mg L-1) and hydroquinone (0.20 to 0.40 mg L-1) used in association to IBA, improved the rooting in three out of four evaluated clones whereas proline (0.20 to 0.40 mg L-1) associated to IBA improved significantly rooting of the four studied clones, proving to be among the most efficient cofactors.

Keywords : Mini-cutting; Stem-cutting rooting; Vegetative propagation; Clonal forestry.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License