Adventitious rooting remains a major constraint for the clonal propagation of Coffea arabica, limiting the large-scale multiplication of elite genotypes. This study evaluated the effects of genotype, auxin treatment, and their interaction on adventitious rooting and basal callus formation in coffee cuttings under controlled nursery conditions, while morphophysiological traits were assessed as complementary indicators of cutting performance. A completely randomized 3 × 3 factorial design was used, including three hybrids (H3, Excelencia, and Milenio) and three plant growth regulator (PGR) treatments: control, indole-3-butyric acid (IBA), and a commercial auxin formulation (RH; NAA + IBA). Rooting probability and root number were significantly affected by PGR treatment, whereas the longest root length was influenced by hybrid, PGR treatment, and their interaction. Model-estimated rooting probability increased from 4.76% in the control to 17.05% under IBA and 35.73% under RH. Similarly, the estimated number of roots per cutting increased from 0.14 in the control to 0.99 under IBA and 1.85 under RH. Although the hybrid × PGR interaction was not significant for rooting probability, the highest observed rooting percentage was recorded in H3 under RH (52.38%), followed by Milenio under RH (33.33%). For the longest root length, the strongest responses were observed under RH, particularly in Milenio (71.15 mm) and H3 (70.08 mm). Callus formation varied among treatments, but its association with rooting performance was weak and inconsistent. Morphophysiological traits provided complementary information on cutting status but were not interpreted as direct mechanistic drivers of rooting. These findings indicate that adventitious rooting in C. arabica was more closely associated with genotype-dependent responsiveness to exogenous auxin than with the extent of callus formation. However, anatomical studies are needed to determine the developmental origin of root primordia and their possible relationship with callus tissue.

Fusarium oxysporum f. sp. cubense (Foc) ha mostrado una alta virulencia y es responsable de pérdidas significativas en la productividad del cultivo de plátano. El objetivo de este estudio fue evaluar el potencial antifúngico de cepas endófitas de Trichoderma spp. contra Foc. La actividad antifúngica se determinó mediante el crecimiento micelial radial de la cepa Foc (MC3) en confrontación con tres cepas endófitas de Trichoderma (HSC-5, HSC-9 y HSC-10), mediante la siembra de discos con micelio opuesto en medio de cultivo PDA, incubados a 28 ºC durante 4 días. Los resultados obtenidos mostraron los mayores grados de antibiosis en la confrontación con la cepa endófita Trichoderma HSC-5 (66.9%), seguido por HSC-9 (65.1%) y HSC-10 (60.5%), respectivamente. Los resultados son prometedores para su uso en una estrategia de gestión integrada de Foc.