Examinando por Materia "SEMILLAS"
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Ítem Evaluación de marcadores moleculares de cloroplasto y nucleares, para su uso en identificación molecular de germoplasmas de orquídeas(Universidad EAFIT, 2021) Londoño Lopera, Pablo Andrés; Villanueva Mejía, Diego FernandoOrchids are the most diverse and evolved group of flowering plants in the world; presenting specificity for pollination, water intake and associations with specific fungi to satisfy their nutritional needs. They are plants of great importance for the ecosystems they inhabit, since they contribute directly to its water regulation. In addition, they provide shelter and food for various organisms such as insects, birds, and mammals. Likewise, orchids are commercially important as ornamental and medicinal plants, as cut flower for export and for the extraction of essences such as vanilla. That is why when propagating and distributing them it is necessary to have them fully identified in order to adequately preserve the characteristics of the germplasms. Since it has been shown that the phenotypic characteristics are insufficient for the identification of these plants, this study was developed in order to evaluate the use of chloroplast molecular markers (MAT-K, YCF-1 and TRNL-TRNF) and nuclear (ITS) for the identification of different genera of orchids, in the seedling stage. In this research, PCR protocols were standardized for the molecular markers presented, in order to develop replicable techniques for the molecular identification of orchids. Identification at the genera level of the analyzed germplasms was carried out using the molecular marker TRNL-TRNF. In this way, scientific and technological knowledge is generated that helps the sustainable and responsible use of orchids at the national level.Ítem Motivadores e inhibidores de los millennials con independencia económica para la compra de alimentos saludables como frutos secos y semillas a través de medios en línea(Universidad EAFIT, 2018) Tavera Uribe, Isabel Cristina; Muñoz Molina, Yaromir; Arboleda, FelipeThe purpose of this research is to know and describe the motivators and inhibitors of the economically independent millennials of socioeconomic levels 4, 5 and 6 of Medellin for the purchase of food such as nuts and seeds through online media -- The methodology used to obtain the results of this research was of an exploratory - descriptive nature -- An analysis of sources was carried out, two group sessions each with seven participants and 358 online surveys were applied -- The results indicated that for the economically independent millennials the main motivators for the consumption of foods such as nuts and seeds are: the health care associated with the prevention of diseases related to bad eating habits, complement the sport and maintaining weight, while the main inhibitors they are the taste, access and the price compared to traditional snacks -- This research also revealed that economically independent millennials are willing to buy healthy foods, specifically nuts and seeds through online media, motivated mainly by two aspects related to lifestyle: the possibility of buying at any time and from any place and the possibility of saving time and displacements, the fear for the quality of the products represents the main inhibitor related to the purchase of fruits and seeds through online mediaÍtem Tratado elemental teorico-practico de agricultura / por Francisco Molina Angel, médico y cirujano de la Universidad Nacional miembro de número la Academia de Medicina de Medellín individuo correspondiente de la Academia Nacional de Medicina profesor de la Escuela Normal del Departamento de Antioquia y encargado especialmente de la enseñanza agrícola en dicho establecimiento, edición ilustrada con grabados intercalados en el texto(Medellín : Imprenta del Departamento, 1891) Molina Ángel, Francisco, n. 1850; Casas Rojas, Jesús, 1840-1913