Sensitivity of hybrid Cymbidium (Orchidaceae) to salt stress (MgSO 4 , CaCl 2 and KNO 3 )
Journal Title: Biotecnología Vegetal - Year 2015, Vol 15, Issue 3
Abstract
Hybrid Cymbidium Twilight Moon ‘Day Light’ is highly sensitive to salt (NaCl). This is not surprising given the natural growth locations of tropical and subtropical orchids, which usually receive clean, and unsalted water. However, to expand the potential culture of orchids using diluted salt water, or brackish water, there is interest in testing the response of orchids to different salts that occur in sea water or brackish water. In this study, the response of protocorm-like bodies (PLBs) to three salts (MgSO 4 , CaCl 2 and KNO 3 ) was assessed. Unlike NaCl, neo-PLBs could form at higher concentrations of Mg 2+ , Ca 2+ and K + ions, with survival occurring at 50 mM. Although development was not optimum at this concentration of these salts, the ability to use diluted salt water or brackish water to induce orchid PLBs or to grow orchid plants would be an expansion of the possible culture conditions into developing countries or countries lined by the sea where access to clean or fresh water may be limited.
Authors and Affiliations
Jaime A. Teixeira da Silva
Keywords
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