Publicación: 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.)
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The 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.