Abstract

PEDROZA-MANRIQUE, Jaime Alonso; SERRATO-MUNOZ, Lina Constanza  and  CASTANO-ROBAYO, Mileidy. Effect of activated charcoal indol and acetic acid in the development of Masdevallia coccinea Linden ex Lindl y Maxillaria nutans Lindl. protocorm like bodies under in vitro. Rev. colomb. biotecnol [online]. 2010, vol.12, n.2, pp.86-102. ISSN 0123-3475.

The evaluation of protocorms growth of Masdevallia coccinea and Maxillaria nutans under in vitro conditions, endangered orchids, it got only Maxillaria nutans reached its successful development by culture in vitro in Murashige and Skoog (1962), which evaluated the effect of the interaction between the activated carbon (0.0, 0.5, 1,0% (w / v)) and indole acetic acid (0.0, 0.5, 1.0 mg.L^-1). The culture medium used was enriched with 3% sucrose and 0.1 g/L^-1 Myo inositol. Protocorms of Masdevallia coccinea, showed that they were immature, state why they did not achieve their vegetative development in the experiment raised, considering that they were in the latency period. It is therefore very important to note that the capsules of the orchid should be ripe, to ensure that protocorms formed in vitro are mature and they respond with ease morphphysiology development. While protocorms of Maxillaria nutans, gave a higher yield in its vegetative development. This research found that the interaction effect of 0.5% activated carbon with 0.5 mg/L^-1 of IAA is positive on the growth rate for the development of Maxillaria nutans protocorms under in vitro conditions. The protocol obtained in this investigation is an alternative of conservation of orchids that are endangered and can contribute to further environmental improvement.

Keywords : Masdevallia coccinea; Maxillaria nutans; in vitro; activated charcoal; IAA.

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