The techniques of plant organ, tissue, and cell culture concentrated on reproducibility, simplicity and accu are now established in many research laboratories racy with sufficient illustration to make all mani throughout the world and are being used in numerous pulations clear. areas of plant science. Methods have been developed The drawings of items used in the bench layout to propagate plants and free them from viruses using diagrams are symbolic and are 'keyed in' by number to shoot tip culture. The regeneration of plants from callus the list of materials and equipment. A line around an...

H. BINDING and J. REINERT In collaboration with the first authors of this volume This volume is devoted to the development of cell clones and plants from ma- nipulated cells: isolated protoplasts, cell fusion bodies, and transformed cells. Isolated protoplasts represent cells which are liberated from their walls and separated from the differentiation pattern of the organism. Investigations on re- generation from protoplasts provide a better understanding of the process and control of developmental pathways. Whereas protoplast isolation results in alteration of the state of differentiation of...

The first volume of the series, on "The Stability of the Differentiated State" received many favorable reviews from the scientific community. Many readers seem to agree with us that publication of topical volumes is a worthwhile alternative to periodic compilations of rather unrelated, though up-to-date reviews. Production of topical volumes is however, plagued with one great difficulty, that of "author synchronization." This difficulty explains the lag between volumes 1 and 2 of the series. Nevertheless we hope that the present volume will be appreciated as a valuable source of information...