Vegetative propagation of redberry using refrigeration, IBA and BAP

Abstract

Increasing interest in the cultivation of redberries has created a need to optimize seedling propagation. This work examines techniques for the vegetative propagation of redberry. Four sequential experiments were conducted. In the first two experiments, we collected stem and root cuttings. In the first experiment, the cuttings were treated with different IBA concentrations, 0, 1000, 2000, 3000 and 4000 mg L-1 , for 10 s. In the second experiment, the cuttings were separated into bundles of ten cuttings each and stored in a refrigerator (approximately 4 °C) for different time periods: 10, 20 and 30 days; the control was a portion of cuttings that was not subjected to refrigeration. In the third experiment we performed two methods of layering in semi-hardwood branches of redberry: tip and air layering. We also applied different IBA concentrations: 0, 1000, 2000, 3000 and 4000 mg L-1. The fourth experiment evaluated only root cuttings stored for 14 days without being treated with IBA. After the storage period, the cuttings were treated with different concentrations of BAP, 0, 300, 600, 900, 1200 and 1500 mg L-1 , for 10 s. We concluded that root cuttings embed deeper than stem cuttings and do not require IBA to improve rooting or BAP to stimulate growth. Storage for 14 days was more effective in stimulating rooting and sprouting. Layering did not provide good results. RESUMO: O crescente interesse pelo cultivo da amoreira-vermelha fez surgir a necessidade de otimizar a produção de suas mudas. O objetivo deste trabalho foi estudar a técnica de propagação vegetativa da amoreira-vermelha. Foram realizados quatro experimentos sequenciais. Nos dois primeiros experimentos, foram coletadas estacas caulinares e radiculares. No primeiro experimento, as estacas foram tratadas com diferentes concentrações de AIB:

Armazenamento a frio e aplicação de reguladores vegetais no enraizamento de estacas radiculares e caulinares de framboeseira

“…Uma delas é o armazenamento em ambiente refrigerado e úmido, cuja finalidade é suprir a necessidade de frio das gemas, em fruteiras de clima temperado (PATTO et al, 2013). Este armazenamento auxilia na superação da endodormência das gemas e propicia o aumento da emissão de brotações nas estacas (CELANT et al, 2010).…”

“…O ácido indolilbutírico (AIB) é uma auxina sintética que tem por finalidade aumentar a emissão de raízes em estacas caulinares (CHAGAS et al, 2008;HAN et al, 2009;PATTO et al, 2013).…”

Sustratos y ácido indol-3-butírico en la propagación de frambuesa

“…Los resultados encontrados, muy posiblemente se debe a que la suplementación exógena de IBA causó un efecto f itotóxico en la planta, reduciendo el enraizamiento y por consecuencia la muerte de la plántula. Resultados reportados por Patto et al (2013) mostraron tendencias similares a las del presente estudio; indicando que la emisión de raíces y brotes disminuyó ligeramente con la aplicación de concentraciones de IBA, obteniendo mayor emisión de raíces y brotes en el testigo. Así mismo Štefančic, Štampar y Osterc ( 2005) hacen mención que IBA inhibió la formación de brotes nuevos en el período temprano del desarrollo de la raíz, influyendo negativamente en el crecimiento de los brotes y el desarrollo del tipo acrobasal del sistema de enraizamiento.…”

Rooting of black raspberry with plant growth regulator

“…A rooting study of root and semi-woody stem cuttings of red raspberry indicated that IBA was not necessary for the rooting of root cuttings (PATTO et al, 2013).…”