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| DOI | 10.4067/S0717-66432017005000319 | ||||||
| Año | 2017 | ||||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Castanea sativa Mill. is a specie of agroforestry interest widely grown in Europe, its current production it is mainly focused on the extraction of a quality brown fruit, highly demanded in the gourmet industry. In Chile, this specie might be successfully grown due to the climate and lack of diseases that may affect it. However, there is not a propagation system that can provide a plant massification for the establishment of fruit orchards. Given this situation, the micropropagation is a possible alternative to apply since this method is extensively studied in this species. The propagation in vitro of Castanea sativa has created successful results in terms of introduction and multiplication. Nevertheless, the propagation in vitro of direct-producer varieties of brown fruit is still poorly studied and for this situation, in order to stablish a production system of a variety of plants of great interest is necessary to evaluate the effects of some variables that affects the in vitro culture of woody as it is the genotype and cytokine source. For this, six varieties of chestnut from Italy and France and two types of cytokines were studied to evaluate their effects on the parameters in vitro establishment as survival, contamination, formation of basal callus, axillary bud break, etc. The results indicate that in the same culture conditions the varieties with better response is Marrone Citta di Castello (CC) and Marrone Chiusa di Pesio (CP), in relation to the formation of basal callus and morphological reaction capacity, where the percentage of explants was greater than 80% and 85%, respectively, independent of the type of cytokinin used. Moreover, the amount of explants with axillary bud break was higher in the treatment with 0.5 mg L-1 of 6-benzylaminopurine (BAP) with 100% in CC and 55% in CP, being there significant differences with the obtained response in the treatment with 0.5 mg L-1 of Thidiazuron (TDZ), where 10% and 15% of explants with axillary bud break were observed, respectively. These results indicate that the genotype and cytokine source have influence on the response of in vitro establishment of nodal segments of chestnut variety, therefore, to establish a propagation system it is necessary to adjust a specific protocol for each variety.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| Larson A, Carmen Gloria | Mujer |
Universidad de Concepción - Chile
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| RIOS-LEA, DARCY GRACIELA | Mujer |
Universidad de Concepción - Chile
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| Jofré V., María Paz | Mujer |
Universidad de Concepción - Chile
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| 1 | Carmen Gloria, Larson A. | - |
Universidad de Concepción - Chile
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| 2 | HASBUN-ZAROR, RODRIGO JORGE | Hombre |
Universidad de Concepción - Chile
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| 3 | JOFRE-VASQUEZ, MARIA PAZ | Mujer |
Universidad de Concepción - Chile
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| 3 | María Paz, Jofré V. | - |
Universidad de Concepción - Chile
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| 4 | SÁNCHEZ-OLATE, MANUEL | Hombre |
Universidad de Concepción - Chile
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| 5 | Rios, Darcy | Mujer |
Universidad de Concepción - Chile
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| Agradecimiento |
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| Al evaluar la tasa de explantos brotados y de mortalidad, los resultados indican que existieron diferencias significativas entre las dos citoquininas utilizadas, BAP y TDZ, siendo inversamente proporcional estas dos respuestas en las variedades CC y CP. Se observó que en estas dos variedades la tasa de mortalidad fue inferior con BAP y por ende la tasa de explantos brotados fue significativamente mayor, existiendo un efecto de la fuente de citoquinina utilizada. Por otra parte, BR, VS y MC presentaron una mortalidad total de los explantos, lo que expresa que para estas variedades el factor fuente de citoquinina no fue determinante, sino un factor que no se evaluó en este estudio, la edad del explanto. |