Growth promoting and rooting of Eucalyptus dunnii for rhizobacteria and epiphytic bacteria.

Abstract

The use of microorganisms with plant growth promoting and rooting effect they have results promising for production of clonal seedlings of eucalyptus. Thus, the aim of this study was evaluate rhizobacteria and epiphytic bacterial potential in the growth promoting and rooting of minicutting of Eucalyptus dunnii. The assay were conducted in randomized block design in a factorial 4 x 3x 3, being factors period to harvesting of shoots, four bacterial isolates and three methods of bacterial application. Percent survival of minicuttings was assessed in the end of greenhouse phase, in the end of shadow house phase and in the end of acclimation sun area phase, the minicutting rooting was evaluate after 90 days of staking of minicuttings. Thereply in the survival in the green house, shadow house and the acclimation sun area has varied according withbacterial isolates, method of appliedandperiod assay realized. Do not observed significant effect of the isolates under rooting of the minicuttings. Based on the results concluded that bacterial isolates sometimes has beneficial effect, sometimes has nothing effect under survival and rooting of minicutting of E. dunnii. How is the first relate of the use to rhizobacteria and epiphytic bacterias as E. dunnii growth promoter and rooting, more studies are needed for confirmation of effective these microorganisms.