Efecto de la consistencia de microestacas y diferentes concentraciones de AIB (Ácido indolbutírico) y ANA (Ácido naftalenacético) en el enraizamiento de Macleania rupestris bajo condiciones controladas

Abstract

Macleania rupestris, commonly known as Joyapa, is a species of the Ericaceae family that shows a high potential for use and commercialization due to the multiple benefits it offers, but it has little rooting at the time of its propagation. In this research, the effect of the consistency of microcuttings of M. rupestris (herbaceous and semi-woody) and of two types of auxins 1) indolebutyric acid (IBA) and 2) naphthaleneacetic acid (NAA) applied at 4 concentrations (0, 500, 1000 and 2000 mg/l) in the rooting of M. rupestris under controlled conditions. Treatments were evaluated in liquid substrate (water) and kept inside covered trays for 90 days, recording temperature and relative humidity. The rooting percentage, the number of roots per cutting, the length of the roots and the percentage of living microcuttings were evaluated. The results showed that the semi-woody microcuttings responded better to rooting compared to those of herbaceous consistency. Regarding the type of auxin, the microcuttings treated with ANA showed greater rooting compared to those treated with AIB. With the low concentration of ANA (500 mg/l) the highest number of rooted microcuttings was obtained, however, the percentage reached is still very low and insufficient for a massive propagation process.