Abstract
Callus and suspension cultures of T. repens (white clover) were established from seedlings. Protoplasts, isolated enzymatically from cell aggregates of suspension cultures, produced callus which was capable of in vitro differentiation into complete plants. Regenerated plants were nodulated if inoculated with Rhizobium trifolii. Karyotypic stability (2n = 4x = 32) was maintained for 2 yr of callus/suspension culture and through organogenesis. Suspension cultures were treated enzymatically to give single-cell populations capable of high plating efficiencies is soft-agar media.