Abstract
Embryogenic callus and somatic embryos were induced from cotyledonary explants of African marigold (Tagetes erecta L.). Cotyledons were first cultured on MS medium supplemented with 2.0 mg l–1 2,4-D and 0.2 mg l–1 kinetin. After 5 weeks, calli were transferred to MS medium supplemented with 0.02 mg l–1 thidiazuron where compact embryogenic callus developed. Friable embryogenic callus developed when the compact embryogenic callus was transferred to medium containing 2,4-D and subcultured every 2 weeks. Friable embryogenic callus has been maintained for more than 2 years without losing the capacity to generate embryos. Embryo development was obtained when friable embryogenic callus was transferred to MS medium supplemented with 3 mg l–1 ABA and 60 g l–1 sucrose. The addition of 10–30 mM l-glutamine improved embryo development.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 13 May 1997 / Revision received: 24 February 1998 / Accepted: 28 March 1998
Rights and permissions
About this article
Cite this article
Bespalhok, J., Hattori, K. Friable embryogenic callus and somatic embryo formation from cotyledon explants of African marigold (Tagetes erecta L.). Plant Cell Reports 17, 870–875 (1998). https://doi.org/10.1007/s002990050500
Issue Date:
DOI: https://doi.org/10.1007/s002990050500