In continuation of Volumes 8 and 9 (1989) on in vitro manipulation of plant protoplasts, this new volume deals with the regeneration of plants from protoplasts and genetic transformation in various species of Agrostis, Arabidopsis, Atropa, Brassica, Catharanthus, Datura, Cucumis, Daucus, Digitalis, Duboisia, Eustoma, Festuca, Helianthus, Hordeum, Kalanchoe, Linum, Lobelia, Lolium, Lotus, Lycium, Lycopersicum, Mentha, Nicotiana, Pelargonium, Pisum, Pyrus, Salvia, Scopolia, and Solanum.These studies reflect the far reaching implications of protoplast technologyin genetic engineering of plants. They are of special interest to researchers in the field of plant tissue culture, molecular biology, genetic engineering, and plant breeding.