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Efecto de 6-bencilaminopurina y nitrato de potasio sobre la micropropagación in vitro de Laelia anceps subsp. anceps (Orchidaceae)//Effect of 6-benzylaminopurine and potassium nitrate on the in vitro micropropagation of Laelia anceps subsp. anceps (Orchid
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Laelia anceps subsp. anceps es una especie de la familia Orchidaceae que presenta altas tasas de extracción y comercio ilegal en diversos estados de la República Mexicana, además requiere de condiciones nutricionales específicas debido a sus características de desarrollo y distribución. Por lo cual, el objetivo de la presente investigación fue establecer un protocolo de micropropagación in vitro comparando el efecto de la citocinina 6-bencilaminopurina (BAP) y el nitrato de potasio (KNO3). Para ello, se cultivaron semillas estériles en medio MS sin reguladores de crecimiento vegetal. Posterior a la germinación, se indujo en las vitroplantas la formación de brotes y raíces en medio MS, suplementado con 0, 2.5, 5.0 y 10 mg L-1 de BAP o 0, 2.5, 5.0 y 10 mg L-1 de KNO3. Los resultados mostraron que la adición de BAP mejoró el proceso de propagación en todos los tratamientos analizados, en tanto que, la adición de 10 mg L-1 de KNO3 indujo los mejores resultados al producir 11.4 ± 0.6 raíces las cuales desarrollaron velamen, una estructura radicular que favorece la absorción de agua. Estos resultados sugieren que a mayor concentración de KNO3 podrían mejorar los resultados de propagación en esta orquídea.ABSTRACTLaelia anceps subsp. anceps is a species of the Orchidaceae family that presents high rates of illegal extraction and trade in several states of the Mexican Republic, and also requires specific nutritional conditions due to its development and distribution characteristics. Therefore, the aim of the present investigation was to establish an in vitro micropropagation protocol comparing the effect of the cytokinin 6-benzylaminopurine (BAP) and potassium nitrate (KNO3). For this, sterile seeds were grown in MS medium without plant growth regulators. After germination, formation of shoots and roots in MS medium was induced in vitroplants supplemented with 0, 2.5, 5.0 and 10 mg L-1 of BAP or 0, 2.5, 5.0 and 10 mg L-1 of KNO3. The results showed that the addition of BAP improved the propagation process in all the treatments analyzed, while the addition of 10 mg L-1 of KNO3 induced the best results by producing 11.4 ± 0.6 roots with the developed of sail, a structure root that favors the water absorption. These results suggest that higher concentration of KNO3 could improve the propagation results in this orchid.
Universidad de Sonora
Title: Efecto de 6-bencilaminopurina y nitrato de potasio sobre la micropropagación in vitro de Laelia anceps subsp. anceps (Orchidaceae)//Effect of 6-benzylaminopurine and potassium nitrate on the in vitro micropropagation of Laelia anceps subsp. anceps (Orchid
Description:
Laelia anceps subsp.
anceps es una especie de la familia Orchidaceae que presenta altas tasas de extracción y comercio ilegal en diversos estados de la República Mexicana, además requiere de condiciones nutricionales específicas debido a sus características de desarrollo y distribución.
Por lo cual, el objetivo de la presente investigación fue establecer un protocolo de micropropagación in vitro comparando el efecto de la citocinina 6-bencilaminopurina (BAP) y el nitrato de potasio (KNO3).
Para ello, se cultivaron semillas estériles en medio MS sin reguladores de crecimiento vegetal.
Posterior a la germinación, se indujo en las vitroplantas la formación de brotes y raíces en medio MS, suplementado con 0, 2.
5, 5.
0 y 10 mg L-1 de BAP o 0, 2.
5, 5.
0 y 10 mg L-1 de KNO3.
Los resultados mostraron que la adición de BAP mejoró el proceso de propagación en todos los tratamientos analizados, en tanto que, la adición de 10 mg L-1 de KNO3 indujo los mejores resultados al producir 11.
4 ± 0.
6 raíces las cuales desarrollaron velamen, una estructura radicular que favorece la absorción de agua.
Estos resultados sugieren que a mayor concentración de KNO3 podrían mejorar los resultados de propagación en esta orquídea.
ABSTRACTLaelia anceps subsp.
anceps is a species of the Orchidaceae family that presents high rates of illegal extraction and trade in several states of the Mexican Republic, and also requires specific nutritional conditions due to its development and distribution characteristics.
Therefore, the aim of the present investigation was to establish an in vitro micropropagation protocol comparing the effect of the cytokinin 6-benzylaminopurine (BAP) and potassium nitrate (KNO3).
For this, sterile seeds were grown in MS medium without plant growth regulators.
After germination, formation of shoots and roots in MS medium was induced in vitroplants supplemented with 0, 2.
5, 5.
0 and 10 mg L-1 of BAP or 0, 2.
5, 5.
0 and 10 mg L-1 of KNO3.
The results showed that the addition of BAP improved the propagation process in all the treatments analyzed, while the addition of 10 mg L-1 of KNO3 induced the best results by producing 11.
4 ± 0.
6 roots with the developed of sail, a structure root that favors the water absorption.
These results suggest that higher concentration of KNO3 could improve the propagation results in this orchid.
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