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O objetivo do presente trabalho foi avaliar o enraizamento de estacas caulinares e radiculares de cultivares de amoreira-preta, coletadas em diferentes épocas, armazenadas a frio e tratadas com AIB. No primeiro experimento, estacas radiculares e caulinares da amoreira-preta 'Tupy' foram coletadas no momento da poda hibernal, realizada nas seguintes épocas: 07/06, 22/06, 08/07, 22/07, 06/08 e 20/08 de 2009. Já no segundo experimento, metade das estacas caulinares e radiculares da mesma cultivar foi armazenada a frio por 30 dias e a outra metade das estacas foi colocada diretamente para enraizar. Todas as estacas foram tratadas com diferentes concentrações de ácido indolbutírico (AIB): 1000, 2000, 3000 e 4000mg L-1 por 10s., além do controle composto somente por água. No terceiro experimento, foram coletadas estacas radiculares das cultivares 'Choctaw', 'Ébano', 'Guarani', 'Arapaho', 'Brazos', 'Cherokee', 'Comanche', 'Caingangue', 'Tupy' e 'Xavante' na poda realizada no dia 22 de junho do ano seguinte. As estacas foram armazenadas a frio por 30 dias e não foi realizado tratamento com AIB. Em ambos os experimentos, as estacas caulinares foram enterradas 2/3 de seu comprimento na posição vertical e as estacas radiculares foram totalmente imersas na posição horizontal, utilizando a vermiculita de grânulos finos como substrato, em telado com sombreamento de 50%. Após 90 dias, pode-se concluir que as estacas radiculares apresentam melhores resultados, devendo ser armazenadas a frio e não tratadas com AIB, mas há diferença do potencial propagativo entre os cultivares de amoreira-preta. The objective of the present research was to quantify the rizogenic potential of stems and root cuttings of blackberry cultivars, collected in different times, cold storage and treated with indolbutyric acid. In the first experiment, roots and stems cuttings of 'Tupy' blackberry were collected close to it hibernal prune and accomplished in the following times: 07/06, 22/06, 08/07, 22/07, 06/08 and 20/08 of 2009. Already in the second experiment, half of the stems and roots cuttings of 'Tupy' blackberry were submitted to cold storage for 30 days and the other amount of cuttings were placed directly for rooting. The whole cuttings were treated with different concentrations of indolbutyric acid (IBA): 1000, 2000, 3000 and 4000mg L-1 for 10 seconds, and control only for water. In the third experiment, roots cuttings of 'Choctaw', 'Ébano', 'Guarani', 'Arapaho', 'Brazos', 'Cherokee', 'Comanche', 'Caingangue', 'Tupy' and 'Xavante' blackberry cultivars were collected in the pruning accomplished in june 22 of the following year. The cuttings were cold storage for 30 days and treatment was not accomplished with IBA. In both experiments, the stems cuttings were buried 2/3 of its length in the vertical position and the roots cuttings were totally immerged in the horizontal position, using vermiculita as substrate, in greenhouse with 50% of light. After 90 days, it can be concluded that the roots cuttings presents better results, owing cold storage and without IBA, but there is difference of propagation potential among blackberry cultivars

Enraizamento de estacas caulinares e radiculares de cultivares de amoreira-preta coletadas em diferentes épocas, armazenadas a frio e tratadas com AIB