Efecto de la longitud del esqueje sobre la propagación asexual de tacaco (Sechium tacaco; Cucurbitaceae)
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José Eladio Monge Pérez
Muñoz López, Karen María
Loría Coto, Michelle
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Abstract
Introducción: Existe poca información sobre la propagación vegetativa de tacaco (Sechium tacaco). Objetivo: Evaluar el efecto de la longitud del esqueje sobre la propagación asexual de tacaco. Métodos: El ensayo lo realizamos en Ujarrás, Cartago, Costa Rica. Utilizamos 36 esquejes de brotes secundarios, de tres
longitudes diferentes (larga, mediana y corta; 12 esquejes de cada longitud). Tratamos los esquejes con 10 000ppm de AIB, y los mantuvimos bajo condiciones de invernadero durante 41 días. Luego los trasplantamos a bolsas plásticas, y los mantuvimos bajo casa sombra por 27 días. Evaluamos las siguientes variables: peso seco de raíz, peso seco de parte aérea, relación peso seco de parte aérea/peso seco de raíz, cambio de altura, cambio de número de nudos, cambio de número de brotes, y cambio de grosor de tallo. Resultados: No hallamos diferencias significativas entre tratamientos para ninguna de las variables evaluadas. Conclusión: La longitud del esqueje no influyó significativamente sobre la propagación vegetativa de tacaco.
Introduction: There is few information on the vegetative propagation of tacaco (Sechium tacaco). Objective: To evaluate the effect of cutting length on the asexual propagation of tacaco. Methods: We carried out the test in Ujarrás, Cartago, Costa Rica. We use 36 cuttings from secondary shoots, of three different lengths (long, medium and short; 12 cuttings of each length). We treated the cuttings with 10 000ppm IBA, and kept them under greenhouse conditions for 41 days. Then we transplanted them into plastic bags, and kept them under a shade house for 27 days. We evaluated the following variables: root dry weight, aerial part dry weight, aerial part dry weight/root dry weight ratio, change in height, change in number of nodes, change in number of shoots, and change in stem thickness. Results: We did not find significant differences between treatments for any of the evaluated variables. Conclusion: The length of the cutting did not significantly influence the vegetative propagation of tacaco.
Introduction: There is few information on the vegetative propagation of tacaco (Sechium tacaco). Objective: To evaluate the effect of cutting length on the asexual propagation of tacaco. Methods: We carried out the test in Ujarrás, Cartago, Costa Rica. We use 36 cuttings from secondary shoots, of three different lengths (long, medium and short; 12 cuttings of each length). We treated the cuttings with 10 000ppm IBA, and kept them under greenhouse conditions for 41 days. Then we transplanted them into plastic bags, and kept them under a shade house for 27 days. We evaluated the following variables: root dry weight, aerial part dry weight, aerial part dry weight/root dry weight ratio, change in height, change in number of nodes, change in number of shoots, and change in stem thickness. Results: We did not find significant differences between treatments for any of the evaluated variables. Conclusion: The length of the cutting did not significantly influence the vegetative propagation of tacaco.
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Artículo científico
Keywords
Cucurbitaceae, clon, enraizamiento, Centroamérica, hortaliza