Efecto del tidiazuron y ácido indolbutiríco en la propagación in vitro de dos variedades de frutilla (Oso Grande y Sweet Charlie) a partir de secciones foliares
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J. Selva Andina Res. Soc.
Abstract
Los agricultores dedicados al cultivo de frutilla indican que los rendimientos son bajos en comparación con otros países, este efecto es consecuencia de que siembran plantines que proceden de estolones ya que las frutillas se propagan vía asexual. Esta forma de reproducción convencional presenta desventajas como: la disminución del rendimiento, la pérdida de la calidad del fruto. Una alternativa para solucionar este problema es la micropropagación. La presente investigación evaluó el comportamiento in vitro de dos variedades de frutilla (Oso Grande y Sweet Charlie) a partir de segmentos foliares con diferentes grados de maduración (juvenil y adulto) en dos épocas de introducción. Para inducir a la propagación in vitro, los medios de cultivo fueron suplementados con reguladores de crecimiento, utilizando dos concentraciones 4.54 y 9.08 µM de tidiazuron con la combinación de tres concentraciones 0, 0.98 y 2.5 µM de ácido indolbutírico. Los explantes de segmentos de hojas que presentaban tejidos juveniles (mayo) llegaron a formar brotes. No ocurrió lo mismo con aquellas que procedían de tejido adulto (junio), por lo que se puede señalar que las que provinieron de tejido juvenil presentaron una mejor respuesta in vitro. Se determinó que la combinación de 9.08 µM de tidiazuron con 0.98 µM de ácido indolbutírico, fue la más adecuada para la propagación in vitro de secciones foliares de hojas de frutilla en ambas variedades, ya que en este medio se obtuvo mayor formación de agregados celulares, para la formación de brotes en comparación con los demás tratamientos.
Strawberry farmers indicate that yields are low compared to other countries. This effect is due to the fact that they plant seedlings that come from stolons since the strawberries are propagated asexual. This conventional form of reproduction has disadvantages such as: decreased yield, loss of fruit quality. An alternative to solve this problem is micropropagation. The present research evaluated the in vitro behavior of two varieties of strawberry (Oso Grande and Sweet Charlie) from leaf segments with different degrees of maturation (juvenile and adult) in two periods of introduction. To induce in vitro propagation, the culture media were supplemented with growth regulators, using two concentrations 4.54 and 9.08 μM of thidiazuron with the combination of three concentrations of 0, 0.98 and 2.5 μM of acid Indolebutyric acid. Explants of leaf segments showing juvenile tissues (May) came to form buds. The same did not occur with those that came from adult tissue (June), so it can be noted that those that came from juvenile tissue had a better response in vitro. It was determined that the combination of 9.08 μM thidiazuron and 0.98 μM indolbutyric acid was the most suitable for the in vitro propagation of leaf sections of strawberry leaves in both varieties, since in this medium more formation was obtained Of cell aggregates, for the formation of outbreaks compared to the other treatments.
Strawberry farmers indicate that yields are low compared to other countries. This effect is due to the fact that they plant seedlings that come from stolons since the strawberries are propagated asexual. This conventional form of reproduction has disadvantages such as: decreased yield, loss of fruit quality. An alternative to solve this problem is micropropagation. The present research evaluated the in vitro behavior of two varieties of strawberry (Oso Grande and Sweet Charlie) from leaf segments with different degrees of maturation (juvenile and adult) in two periods of introduction. To induce in vitro propagation, the culture media were supplemented with growth regulators, using two concentrations 4.54 and 9.08 μM of thidiazuron with the combination of three concentrations of 0, 0.98 and 2.5 μM of acid Indolebutyric acid. Explants of leaf segments showing juvenile tissues (May) came to form buds. The same did not occur with those that came from adult tissue (June), so it can be noted that those that came from juvenile tissue had a better response in vitro. It was determined that the combination of 9.08 μM thidiazuron and 0.98 μM indolbutyric acid was the most suitable for the in vitro propagation of leaf sections of strawberry leaves in both varieties, since in this medium more formation was obtained Of cell aggregates, for the formation of outbreaks compared to the other treatments.
Description
Vol. 8, No. 1