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 AJPS  Vol.10 No.7 , July 2019
In Vitro Propagation of Endangered Orchid, Vanda pumila Hook.f. through Protocorms Culture
Abstract: The Vanda pumila is a monopodial orchid with beautiful flowers that are native to Thailand but now found across South Asia. The immature seeds of Vanda pumila were used for in vitro culture and then the protocorms developed were used as explants for seedling development and mass propagation. Protocorms were cultured on 1/2 MS (Murashige and Skoog, 1962) medium fortified separately with Kinetin (Kn), 6-Benzyl amino purine (BAP) and Gibberellic Acid (GA3) each in different concentrations as (0.5 mg/L, 1.0 mg/L and 2.0 mg/L) well as each on each concentrations of each medium supplemented with 5% and 10% coconut water (CW) respectively. The greatest number of shoots (9.50 ± 0.29 shoots per culture) was developed on 1/2 MS medium fortified with 1.0 mg/L Kn plus 10% CW and the longest shoots (0.78 ± 0.07 cm per culture) developed on 1/2 MS medium fortified with 2.0 mg/L BAP plus 10% CW. The shoots derived from protocorms were then developed on 1/2 MS medium fortified with three different rooting hormones viz. Indole-3-acetic acid (IAA), Indole-3-butyric acid (IBA) and α-Naphthalene acetic acid (NAA), each in four concentrations (0.5 mg/L, 1.0 mg/L, 1.5 mg/L and 2.0 mg/L) as well as 1.0 mg/L of each hormone supplemented with 10% CW. The 1/2 MS medium fortified with 0.5 mg/L IAA was found to be the most effective condition for the development of maximum number of root (5 ± 0.0 roots per culture) and root length (0.93 ± 0.07 cm). Hence, the present study could be useful for standardizing the protocol for mass propagation of the endangered orchid V. pumila.
Cite this paper: Maharjan, S. , Pradhan, S. , Thapa, B. and Pant, B. (2019) In Vitro Propagation of Endangered Orchid, Vanda pumila Hook.f. through Protocorms Culture. American Journal of Plant Sciences, 10, 1220-1232. doi: 10.4236/ajps.2019.107087.
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