Efecto del activador de germinación New Robust® y el enraizador Hormonagro® 1 en la propagación de Cedrela montana Moritz Ex Turcz. en condiciones de laboratorio

Abstract

This research aimed to evaluate the effect of the New robust® germination activator and the Hormonagro® 1 rooting agent on the propagation of Cedrela montana Moritz ex Turcz, under laboratory conditions. In seeds from two forest nurseries, the following were determined: percentage of germination and root length, in cuttings the following were evaluated: percentage of rooting and number of rootlets. The trials were installed, using the doses established in the technical sheets of both the germination activator and the rooting agent, after disinfecting the seeds and cuttings. In the seed test, data regarding weight (g), germination percentage at 10 days and root growth at 30 days were recorded, rooting was evaluated up to 60 days. The results showed that the germination activator was not incident in the imbibition and radicle emergence phases, but it was incident in root growth (high dose 200 ppm), with greater root length in the cedar seeds from the places evaluated. On the contrary, Hormonagro® 1 was not efficient in rooting the cuttings, in any of the concentrations used. This study demonstrated that although the activator did favor root growth, other seed quality factors must be considered. While the medium liquid substrate (MS) with the rooter did not favor the development of roots in the cedar cuttings. Therefore, it was recommended to carry out studies with complementary parameters for quality and homogeneity of seeds and cuttings.