Plant regeneration from protoplasts isolated from embryogenic suspension cultures of creeping bentgrass (Agrostis palustris Huds.)

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Abstract
A rapidly growing embryogenic suspension culture cell line of creeping bentgrass cv Penncross (Agrostis palustris Huds.) was established from callus derived from the culture of mature seeds. High concentrations of 2,4-D were required for the induction of callus (3 mg/1) as well as for the maintenance of the cell Une (2 mg/1) on modified B5 medium of Gamborg. Protoplasts isolated from the suspension cultures were successfully cultured in Murashige and Skoog's basal medium supplemented with only 0.1 mg/1 2,4-D. Although protoplast plating efficiency was rather low (0.36%), 30% of the protocalli formed normal green plants that were successfully established in soil.