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Revista Árvore

On-line version ISSN 1806-9088

Abstract

MAFIA, Reginaldo Gonçalves et al. Growth of cuttings and productivity of mini - clonal hedges, treated with selected rhizobacteria. Rev. Árvore [online]. 2005, vol.29, n.6, pp.843-851. ISSN 1806-9088.  http://dx.doi.org/10.1590/S0100-67622005000600002.

The effect of plant growth promoting rhizobacteria was evaluated for root biomass of cuttings, number of mini-cuttings per mini-stump and productivity of mini-clonal hedges (number of mini-cuttings x rooting percent) of eucalyptus in the nursery. Except for clone 57, all other showed increase in root biomass, with an average of 53, 52 and 69% for clones 129, 1274, and 7074 respectively. In general, significant differences were found for mini-cutting production, but not for the productivity index (number of mini-cuttings x rooting percent). Isolate S1 had a substantial effect on the production of mini-cuttings, with increases varying from 11 to 23% for clones 129 and 1274 respectively. For clone 7074, the average increase was 15%. The results clearly indicated that rhizobacteria could be employed to maximize the vegetative propagation of eucalyptus by cutting.

Keywords : Eucalypt; rhizobacteria; clonal propagation; mini-clonal hedges.

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