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Gayana. Botánica

versión On-line ISSN 0717-6643

Resumen

RIFFO, GERSON et al. Macropropagation of Paulownia elongata x fortunei from root cuttings in the Biobío Region, Chile. Gayana Bot. [online]. 2015, vol.72, n.1, pp.70-75. ISSN 0717-6643.  http://dx.doi.org/10.4067/S0717-66432015000100009.

Growing Paulownia was recently introduced in Chile. Results of vegetative propagation of hybrid Paulownia elongata x fortunei are presented in this research, using root cuttings, The aim of this study was to determine the capacity of root cuttings of hybrid P. elongata x fortunei to form adventitious shoots, to get new plants which conserve the genotype and characteristics of hybrid using a simpler and low-cost technique. For this, were used root cuttings of plants with one year old, obtained from experimental plantings, with the purpose to study the propagation behavior according to three variables: cutting diameter (three levels), substrate type (two levels), and exogenous stimulus BAP/IBA (two levels). Twelve treatments were generated, each one with three repeats. The best result was obtained with small diameter cuttings (0.65-0.79 cm), planted in compost:perlite and not treated with hormones, generating plants 9.44 cm of height in a period of 50 days. It can be concluded that to generate Paulownia plantlest, vegetative propagation by cuttings root of one year old trees is a viable option.

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