During the winter pruning, in the dormancy period, there are surpluses of great amount of vegetable material that can be used in the propagation. It was aimed at verifying the hardwood cuttings rooting potential of two blackberry cultivar treated with indolebutyric acid (IBA). Hardwood cuttings without leaves, with approximately 15 cm were collected from branches with one year old of ‘Brazos' and ‘Guarani' mother-plant and treated with solution of IBA at of 0, 1000, 2000 and 3000 mg.L-1 concentrations for 15 seconds immersion. Later the cuttings were planted in polyethylene bags containing sand and soil mixture (2:1 v/v) as substrate and maintained in greenhouse under intermittent mist for 90 days. The cultivars presented them different rooting potential and aerial part development cuttings. Larger rooted and sprouted cuttings percentage, number of leaves and sprouts and dry matter weights of the sprouts were obtained in ‘Brazos' cuttings non treated with IBA and in ‘Guarani' cuttings with treatment of 2000 mg.L-1 of IBA.
Rubus; small fruits; rooting and fit regulator; blackberry
