Examinando por Materia "esquejes"

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Influence of root inducers and substrates on the vegetative propagation of pitahaya species (Hylocereus spp.) under nursery conditions
(Springer Nature, 2026-07-01) Chuquibala Checan, Beimer; Cruz Malca, Jonathan Michael; Cubas Sanchez, Jefferson Anthony; Arce Inga, Marielita; Taboada Mitma, Víctor Hugo; Gómez Fernández, Darwin; Tafur Culqui, Josué, Josué; Goñas Goñas, Malluri; Tineo Flores, Daniel
Pitahaya (Hylocereus spp.) is an emerging crop for tropical regions; however, its vegetative propagation is strongly influenced by environmental and management factors. Optimizing rooting and establishment under nursery conditions is essential to produce uniform and vigorous seedlings. This study evaluated the effects of root inducers and substrates on the vegetative propagation of three Hylocereus species under nursery conditions. A completely randomized design (CRD) with a 2×2×3 factorial arrangement was implemented, including two root inducers (NAA + IBA solution and seaweed extract), two substrates (substrate 1 and substrate 2), and three species (H. undatus, H. megalanthus, and H. costaricensis), resulting in 12 treatments with four replicates each. Seven variables were assessed: shoot emission time (SET), cutting viability (CV), number of shoots (NS), shoot length (SL), number of roots (NR), root length (RL), and vegetative vigor index (VVI). ANOVA revealed significant effects (p ≤ 0.05) in the three-factor interaction for SET, CV, NS, SL, RL, and VVI. Treatment T9 achieved the shortest SET (21.53 days) and highest CV (100%), T7 recorded the highest NS (1.62 shoots plant⁻¹), T3 showed greater SL (68.67 cm) and NR (5.30 roots plant⁻¹), and T12 obtained the highest RL (42.69 cm) and VVI (110.18). Effect size analysis based on partial eta squared (ηp²) identified species as the most influential factor, explaining 55–98% of the observed variance. Among the evaluated species, H. costaricensis showed the best overall performance. These findings demonstrate that combining H. costaricensis, substrate 1, and NAA + IBA enhances vegetative propagation efficiency. These findings provide valuable evidence for improving pitahaya propagation protocols and optimizing seedling production under nursery conditions.
Respuesta de la Cinchona officinallis L. al método asexual mediante estacas y esquejes
(Instituto Nacional de Innovación Agraria - INIA, 2018-12-31) Villar Cabeza, Miguel Ángel; Marcelo Bazán, Fátima Elizabeth; Baselly Villanueva, Juan Rodrigo
La Cinchona officinalis L., perteneciente a la familia Rubiaceae sufrió una gran presión a lo largo de estos años, llegando en la actualidad a estar en estado vulnerable; pues su corteza contiene alcaloides que ayudan a contrarrestar la fiebre amarilla. En el presente trabajo de investigación se evaluó la respuesta de esta especie al método de propagación asexual mediante estacas y esquejes, en función de árboles candidatos a semilleros, parte de la copa, hormonas y sustratos. No se logró propagar la Quina por el método asexual, presumiéndose que se deba al contenido de alcaloides presentes en la corteza que inhibió el desarrollo de raíces.