GERMINACIÓN in vitro DE Dianthus caryophyllus EN DIFERENTES MEDIOS DE CULTIVO

D. caryophyllus “clavel” es una planta ornamental que contribuye con el 12% de la exportación de flores a nivel mundial y se hace necesario masificar su cultivo utilizando los cultivo in vitro. Por ello se experimentó evaluar la germinación en condiciones in vitro en tres diferentes medios de cultivo. Los tratamientos fueron el medio de Murashige y Skoog (MS), medio con agua de coco y medio con extracto de papa, se compararon el porcentaje de germinación (%G), la velocidad de germinación (M) e índice de germinación (IG). El análisis estadístico del número de semillas germinadas al sexto día de siembra mostró que el medio agar con agua de coco (AC) fue el más efectivo para la germinación del clavel siendo estadísticamente similar al medio MS y distinto del medio con extracto de papa que obtuvo los valores más bajos.Palabras clave: germinación, D. caryophyllus, medio de cultivo.ABSTRACTD. caryophyllus "carnation" is an ornamental plant that contributes with 12% of the export of flowers worldwide and it is necessary to massify its cultivation using the in vitro culture. Therefore, it was experimented to evaluate the germination in in vitro conditions in three different culture media. The treatments were the medium of Murashige and Skoog (MS), medium with coconut water and medium with potato extract, the percentage of germination (% G), germination speed (M) and germination index (GI) were compared. . The statistical analysis of the number of seeds germinated on the sixth day of sowing showed that the agar medium with coconut water (AC) was the most effective for germination of the carnation being statistically similar to the MS medium and different from the medium with potato extract that obtained the lowest values.Key words: germination, D. caryophyllus, culture medium

Propagation of Theobroma cacao by rooted cuttings in mini-tunnels

Cacao is an economically important crop that is currently planted in Asia, Africa, and America. Cuttings is a technique of vegetative propagation suitable for the conservation of selected desirable characteristics in cacao trees. The objective of this study was to evaluate the rooting of cacao cuttings in mini-tunnels with different doses of indole-3-butyric acid (IBA) to obtain a simple and viable vegetative propagation protocol. The experiment was carried out under a completely randomized design (CRD). Cuttings 5 to 7 cm long were collected from the middle area of cacao tree crowns and treated with doses of 0, 1000, 2000, and 3000 ppm of IBA; then they were placed in Jiffy© pellets and set to root in plastic-covered mini-tunnels with fog irrigation. The results indicate that treatments with 0 and 1000 ppm of IBA produced the highest values in survival (100%, both treatments) and rooting percentage (87.7 and 90.0%, respectively) as well as number and length of roots (4.3 roots-4.21 cm in length and 4.5 roots-5.32 cm in length, respectively); likewise, cuttings treated with 0 ppm rooted after 24–40 days, followed by doses of 1000 ppm (24–46 days). All rooted cuttings without IBA (0 ppm) achieved 100% acclimatization in nursery. In general, the best results were obtained without IBA application (Control 0 ppm) in all the parameters evaluated, similar to those obtained with the application of 1000 ppm IBA; these results indicate the success and efficiency of the vegetative propagation protocol proposed in this study

Teorías y Sistemas Psicológicos - PS04 201501

El curso de Teorías y Sistemas Psicológicos brinda al alumno un acercamiento contextual y teórico a las corrientes más importantes de la psicología actual: psicoanálisis, conductismo, cognitivismo, humanismo y sistémica. El curso se divide en módulos que examinan las mencionadas teorías. Cada módulo, presenta un espacio a nivel introductorio, para reflexionar sobre el surgimiento y vigencia, los alcances y las limitaciones de estas perspectivas, dentro de una mirada contextual e integradora. El alumno describe los diversos postulados de cada corriente contrastándolos y relacionándolos