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Vegetativepropagation of jequitibá-rosa (Cariniana estrellensis (Raddi) Kuntze) by cuttings

The present studyaimed to develop a vegetative propagationmethodology for jequitibá-rosa (Carinianaestrellensis (Raddi) Kuntze) by using the technique of cuttings evaluating the survival and productive capacity of the strains in successivecuttings collections in the clonal garden.Moreover, wereevaluated the rooting, height, vigor and root biomass and leaf cuttings due to the application of different dosages of growth regulator (IBA) and type of cutting. The clonal garden was built from plants derived from seedlings coming from seminal material with a density of 9 plants per m² established directly in the soil. Rootingevaluations were performedin two periods of the year, in a greenhouse (at 120 days), in the shade (at 140 days) and atfull sun (at 170 days), after the establishment. The application of IBA did not influencemost of the evaluated characteristics; however, as for the type of cutting, the apical stumps presented the greatest values for the studied characteristics. The survival of strains was 100% and production of shoots showed a rising trend in successive collections. It is concluded that the vegetative propagation of jequitibá-rosa by cutting technique is feasible, especially when using apical cuttings. IBA application promotedno significant effects, indicating that its use is not necessaryforpropagation by cuttings of jequitibá-rosa.

Growth regulator; Rooting; Plants propagation


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