Abstract
Tissue culture propagation was performed on the spice shrub damiana (Turnera diffusa. Willd.) using MS medium (Murashige and Skoog 1962) supplemented with different combinations of the plant growth regulators, 6-benzyl adenine (BA) and indole-3-butyric acid (IBA). Organogenesis of leaf explants from wild plants and explants from propagated cuttings was compared; only the former regenerated complete plants. The highest shooting rate (92%) occurred at a concentration of 10−7 M BA plus 10−6 M IBA. Regenerated shoots were rooted in MS medium without any plant growth regulators. Foliage productivity of the micropropagated plants under field cultivation was determined yearly over 3 years. The yield increased annually for the first two years. The quantity of essential oils in propagated plants was similar to that of wild plants growing nearby. We propose tissue culture propagation of damiana as a viable means of domestication of this wild plant for semi-arid agriculture in Mexico. Commercial propagation would help to conserve wild populations of damiana that are currently threatened by overharvesting.
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Abbreviations
- BA:
-
6-benzyl adenine
- IBA:
-
indole-3-butyric acid
References
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Communicated by G. C. Phillips
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Alcaraz-Meléndez, L., Real-Cosío, S. & Bashan, Y. Domestication of micropropagated plants of the spice damiana (Turnera diffusa). Plant Cell Reports 13, 679–682 (1994). https://doi.org/10.1007/BF00231623
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DOI: https://doi.org/10.1007/BF00231623