1. Improved culture ability of potato protoplasts by use of activated charcoal

   • I. Carlberg
   • K. Glimelius
   • T. Eriksson

   OriginalPaper Pages: 223 - 225

2. In vitro plantlet regeneration through asexual embryogenesis in cotyledonary segments of Corylus avellana L.

   • C. Pérez
   • B. Fernández
   • R. Rodríguez

   OriginalPaper Pages: 226 - 228

3. Unsaturated fatty acid synthesis in sunflower (Helianthus annuus L.) seeds in response to night temperature

   • C. P. Rochester
   • J. G. Silver

   OriginalPaper Pages: 229 - 231

4. A rapid method of determining growth characteristics of plant cell populations in batch suspension culture

   • L. J. W. Gilissen
   • C. H. Hänisch ten Cate
   • B. Keen

   OriginalPaper Pages: 232 - 235

5. Cell cycle arrest induced by theophylline in root meristem of Haplopappus gracilis

   • M. Levi
   • D. Chiatante
   • E. Sparvoli

   OriginalPaper Pages: 236 - 239

6. The binding of isolated mesophyll cells from barley leaves to hyphae of Pyrenophora teres

   • J. A. Hargreaves
   • J. P. R. Keon

   OriginalPaper Pages: 240 - 243

7. Agarose plating and a bead type culture technique enable and stimulate development of protoplast-derived colonies in a number of plant species

   • R. D. Shillito
   • J. Paszkowski
   • I. Potrykus

   OriginalPaper Pages: 244 - 247

8. Changes in DNA composition during cell differentiation in a green alga

   • V. Ssymank

   OriginalPaper Pages: 248 - 251

9. Shoot regeneration in root cultures of Solanaceae

   • A. Zelcer
   • O. Soferman
   • S. Izhar

   OriginalPaper Pages: 252 - 254

10. Microspore-derived haploid, diploid and triploid plants in Petunia violacea lindl

    • P. P. Gupta

    OriginalPaper Pages: 255 - 256

11. Influence of growth conditions on the composition of cell wall polysaccharides from cultured tobacco cells

    • W. Blaschek
    • G. Franz

    OriginalPaper Pages: 257 - 260

12. Loss of competence for glyoxysome formation during somatic embryogenesis in anise (Pimpinella anisum L.) suspension cultures

    • R. A. Kudielka
    • R. R. Theimer

    OriginalPaper Pages: 261 - 264

13. Inactivation of aphidicolin by plant cells

    • F. Sala
    • C. Sala
    • S. Spadari

    OriginalPaper Pages: 265 - 268

14. An assessment of the cultural capabilities of Trifolium repens L. (white clover) and Onobrychis viciifolia Scop. (sainfoin) mesophyll protoplasts

    • P. S. Ahuja
    • D. Y. Lu
    • M. R. Davey

    OriginalPaper Pages: 269 - 272

15. Stability of biotransformation capacity in Digitalis lanata cell cultures after cryogenic storage

    • U. Seitz
    • A. W. Alfermann
    • E. Reinhard

    OriginalPaper Pages: 273 - 276