Abstract
Callus cultures with globular proembryogenic structures were induced from zygotic embryos and hypocotyl segments of Cyphomandra betacea on MS medium supplemented with 2,4-D. Proembryogenic structures produced somatic embryos and plantlets on regulator-free basal medium. Pieces of embryogenic callus subcultured on medium with the same original composition gave rise to new globular structures and the potential for plantlet regeneration has been maintained for over a year. The histological examination of these proembryogenic structures suggested that somatic embryos arise from single cells. Regenerated plants are phenotypically normal, having diploid chromosome numbers (2n = 24).
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References
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Guimarães, M.L.S., Cruz, G.S. & Montezuma-De-Carvalho, J.M. Somatic embryogenesis and plant regeneration in Cyphomandra betacea (Cav.) Sendt. Plant Cell Tiss Organ Cult 15, 161–167 (1988). https://doi.org/10.1007/BF00035757
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DOI: https://doi.org/10.1007/BF00035757