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Agronomía Colombiana

versão impressa ISSN 0120-9965

Resumo

INSUASTY-TORRES, Jennyfer; ROJAS-ZAMORA, Oscar; VARGAS-RIOS, Orlando  e  CARDENAS, Camilo de los Ángeles. Propagation of Chusquea tessellata (Munro) culms at different naphthaleneacetic acid concentrations and in different substrates. Agron. colomb. [online]. 2011, vol.29, n.3, pp.399-406. ISSN 0120-9965.

Chusquea tessellata is native specie of Colombian wet páramos. Despite the ecological importance of this ecosystem, production activities have altered the structure of the C. tessellata patches. The aim of this study was to evaluate vegetative propagation from sections of culm stimulating their rooting, to have a lot of material for transplantation and with high survival. We tested 56 treatments with three combined factors: phytohormone NAA concentration, type of substrate and type of culm section. After three months we assessed the frequency and number of roots and vegetative shoots. The results suggest that the frequency and quantity of roots and shoots are affected mainly by the type of culm section, the best results is the basal sections, because these sections of culm have the morphological characteristics that allow successful propagation. Shoot production is also affected by interactions between other factors, substrate and NAA concentration

Palavras-chave : bamboos; páramos; tropics; rooting; phytohormones.

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