Since the first edition of our book "Tissue Culture in Fores try" in 1982 we have witnessed remarkable advances in cell and tissue culture technologies with woody perennials. In …
2. 2. Plant materials 2. 3. Pregrowth conditions 2. 4. Cryoprotectant treatment 2. 5. Freezing 2. 5. 1. Slow freezing 2. 5. 2. Rapid freezing 2. 5. 3. Droplet freezing 2. 6. …