Summary
A protocol for in vitro propagation of Bixa orellana is described. Plants were regenerated from shoot apex and nodal explants on B5 medium supplemented with 4.9 μM 2-isopentenyl adenine. The multiplication factor of shoot apex explants was higher (nine shoots per explant) than that of the nodal explants (five shoots per explant). Regardless of the position of the nodes, all the nodal explants gave similar responses. However, the size of the nodal explant was an important factor in producing multiple shoots: 0.5 cm nodal explants produced the maximum multiple shoots. Regenerated shoots from shoot apex explants rooted best on MS medium supplemented with 0.05 μM α-naphthalene acetic acid (NAA). whereas shoots regenerated from nodal explants needed 2.7 μM NAA for rooting. Eighty per cent survival of in vivo transferred plants occurred on the best potting substrate, coco peat. Since the multiplication factor was nine per explant, this protocol can be use for commercial microprogation. However, the regeneration capacity declined after 10 subcultures. Approximately, 3350 rooted plants could be generated in 10 mo. after eight subcultures, from one shoot with a shoot apex and four nodes.
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An erratum to this article is available at http://dx.doi.org/10.1007/s11627-016-9798-x.
This paper is being retracted by the Editor-in-Chief because it contains extensive figure and data duplication from an article published in Current Science, Vol 78, No 12, June 2000, pp 1532-1535
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D'Souza, MC., Sharon, M. RETRACTED ARTICLE: In vitro clonal propagation of annatto (Bixa oreliana L.). In Vitro Cell.Dev.Biol.-Plant 37, 168–172 (2001). https://doi.org/10.1007/s11627-001-0029-7
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DOI: https://doi.org/10.1007/s11627-001-0029-7