Abstract
Explants of Gelidium versicolor, Grateloupia doryphora and Laurencia sp. were cultivated in Provasoli enriched seawater culture medium (PES) adjusted to several osmolalities (0.5, 0.7, 1.0 and 1.5 Os kg-1) and solidities (agar concentration = 3, 8 and 15 g L-1). Osmolality was adjusted by dilution of seawater with distilled water (50, 70 and 100% seawater) and by NaCl addition. Expiants of Laurencia sp. and Grateloupia doryphora showed bud regeneration and callus formation. Expiants of Gelidium versicolor only showed bud regeneration. Osmolalities of 0.5 and 1.05 Os kg-1 inhibited or drastically reduced bud regeneration and callus formation. The highest callus formation and bud regeneration were observed at 0.7 to 1.0 Os kg-1. An increase in the agar concentration of the culture medium was positively correlated with callus formation and negatively correlated with bud regeneration. An increase in the percentage of seawater increased the solidity of the culture medium and was positively correlated with callus formation. Glycerol was an effective carbon source for the vegetative propagation of axenic expiants of Grateloupia doryphora, promoting growth and bud regeneration. An increase in glycerol concentration in the culture medium increased its osmolality, inhibiting the growth of the expiants and their morphogenetic development.
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© 1990 Kluwer Academic Publishers
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Robaina, R.R., Garcia-Reina, G., Luque, A. (1990). The effects of the physical characteristics of the culture medium on the development of red seaweeds in tissue culture. In: Lindstrom, S.C., Gabrielson, P.W. (eds) Thirteenth International Seaweed Symposium. Developments in Hydrobiology, vol 58. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2049-1_19
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DOI: https://doi.org/10.1007/978-94-009-2049-1_19
Publisher Name: Springer, Dordrecht
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