Examinando por Materia "Propagation"
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Publicación Acceso abierto Evaluación de la eficacia de los métodos de mini injertos hendidura, t invertida y yema terminal en la propagación de plantas de naranja valencia (citrus sinensis (l.) osbeck.)(2020-11-11) Álvarez Correa, Cristian Camilo; Suárez, IsidroThe Valencia Orange (Citrus sinensis The Valencia Orange (Citrus sinensis (L.) Osbeck.) is the most cultivated in the citrus regions of the world as well as in Colombia, being the subtropical regions responsible for more than 85% of the world production. The Valencia Orange is of great importance in Cordoba due to its wide consumption and also because of its high nutritional content such as vitamin C, which helps to absorb other nutrients. In Colombia, small producers of plants for planting in the citrus area are unable to comply with the requirements of Resolution 12816 of 2019, mainly because of the costs involved in maintaining large mother plants under net house conditions. This research was carried out in the Laboratory of Vegetal Biotechnology of the Faculty of Agricultural Sciences of the University of Cordoba, municipality of Montería in the department of Cordoba, and its main objective was to evaluate the efficiency of three mini-grafting techniques in the production of orange Valencia plants. The rootstocks were obtained from cleopatra mandarin seeds (Citrus reshni Hort ex Tan) evaluating different conditions for germination. The seeds that were scarified achieved the best result with 100% germination. There were statistically significant differences between the evaluated treatments (P0.05). Three mini-graft methods were evaluated (inverted T, cleft and terminal bud) with 20 repetitions for each treatment, the cleft method obtained the highest percentage of successful mini-grafts (75%), followed by the inverted T method (37.2%), the method that obtained the less favorable data was terminal bud (0%). Bud length (cm) and number of leaves were evaluated. Bud length was analyzed with a Student t-Test for independent samples, where no significant differences were observed (P>0.05), for number of leaves a non-parametric Wilcoxon Test for independent samples was used. Significant differences between treatments were observed (P (L.) Osbeck.) is the most cultivated in the citrus regions of the world as well as in Colombia, being the subtropical regions responsible for more than 85% of the world production. The Valencia Orange is of great importance in Cordoba due to its wide consumption and also because of its high nutritional content such as vitamin C, which helps to absorb other nutrients. In Colombia, small producers of plants for planting in the citrus area are unable to comply with the requirements of Resolution 12816 of 2019, mainly because of the costs involved in maintaining large mother plants under net house conditions. This research was carried out in the Laboratory of Vegetal Biotechnology of the Faculty of Agricultural Sciences of the University of Cordoba, municipality of Montería in the department of Cordoba, and its main objective was to evaluate the efficiency of three mini-grafting techniques in the production of orange Valencia plants. The rootstocks were obtained from cleopatra mandarin seeds (Citrus reshni Hort ex Tan) evaluating different conditions for germination. The seeds that were scarified achieved the best result with 100% germination. There were statistically significant differences between the evaluated treatments (P0.05). Three mini-graft methods were evaluated (inverted T, cleft and terminal bud) with 20 repetitions for each treatment, the cleft method obtained the highest percentage of successful mini-grafts (75%), followed by the inverted T method (37.2%), the method that obtained the less favorable data was terminal bud (0%). Bud length (cm) and number of leaves were evaluated. Bud length was analyzed with a Student t-Test for independent samples, where no significant differences were observed (P>0.05), for number of leaves a non-parametric Wilcoxon Test for independent samples was used. Significant differences between treatments were observed (P<0.05), with 3 and 5 leaves on average.Publicación Acceso abierto Selección y propagación de árboles plus de eucalipto (eucalyptus grandis x eucalyptus urophylla) en la reforestadora del Sinú.(2020-11-11) Padilla Hernández, Samir De Jesús; Espítia Camacho, MiguelReforestadora del Sinú, Colombia branch, is a forestry company dedicated to the production and establishment of fast-growing timber species specifically “Eucalyptus grandis X Eucalyptus urophylla” on the Colombian Caribbean Coast with field operations in the departments of Córdoba and Antioquia. The objective of the internship was to select and propagate high-yield trees (plus trees) of the Eucalyptus hybrid (Eucalyptus grandis X Eucalyptus urophylla.) In plantations of the Reforestadora del Sinú Colombia branch. It was carried out in the seed stands of the company in the municipalities of Valencia Córdoba, Las Plata Antioquia, Turbo Antioquia and Montería Córdoba where the “La Ribera” nursery is established. The work consisted specifically of touring the seed farms within the municipalities where the seed trees were located, to make the selection it was based on the method of Zobel and Talbert, where they were selected individually taking into account the phenotypically desired parameters. In the seed collection, it was taken into account to climb the trees to the middle third of the tree where the branches that met the parameter were found, for the propagation and multiplication process, the different propagation techniques to be implemented in the plant were taken into account. Company: propagation by cuttings, grafting and induction of shoots. As a result, the selection of the trees plus mainly took into account the phenotypic characteristics such as the crown, angle of the branch, bifurcation, phytosanitary status and sociological position. It was obtained that the propagation by the three observed methods did not have a homogeneous behavior in the eucalyptus species, where we can highlight the staking method since it has a better behavior with respect to the other two methods. To conclude we have that Zobel and Talbert's method in the selection of plus trees of the eucalyptus species used in the company presented good results and it can be stated that despite being the same eucalyptus species (Eucalyptus grandis X Eucalyptus urophylla) and under the The same conditions do not have the same percentage of propagation, this can be attributed to the manipulation of the plant material and the skill of the graft.