Production of plantlets of the red alga of Gelidium genus (Rhodophyta) from thallus fragments

Experimental research on production of plantlents from fragments of thallus of the alga Gelidiumi were carried out. The best results on development of plantlets without rhizoids were achieved with cultivation of fragments of subapical parts of the plant. Thus, the average growth rate of plantlets in the last for 4 weeks of rearing was 6.7 ± 1.2% a day. Gelidium plantlets with rhizoids were grown from the top branches of plants in an intensively stirred culture with shading of the lower parts of the branches. It is suggested to use the same method for obtaining planting material during bottom rearing of Gelidium in the sea as that for intensive culture in tanks. © Pleiades Publishing, Inc. 2006.