1. Editorial

   • Nikolaus Amrhein
   • Oluf L. Gamborg

   EditorialNotes Pages: 1 - 1

2. In vitro shoot regeneration from leaf mesophyll protoplasts of hybrid poplar (Populus nigra x P. maximowiczii)

   • Young Goo Park
   • Sung Ho Son

   OriginalPaper Pages: 2 - 6

3. Plant regeneration from callus and protoplast cultures of Helianthus giganteus L.

   • Sergei Krasnyanski
   • Zsolt Polgár
   • László Menczel

   OriginalPaper Pages: 7 - 10

4. Transformation of Solanum integrifolium poir via Agrobacterium tumefaciens: Plant regeneration and progeny analysis

   • G. L. Rotino
   • D. Perrone
   • E. Lupotto

   OriginalPaper Pages: 11 - 15

5. Plant regeneration from protoplasts of wheat (Triticum aestivum cv. Hartog)

   • D. G. He
   • Y. M. Yang
   • K. J. Scott

   OriginalPaper Pages: 16 - 19

6. Introduction and differential use of various promoters in pollen grains of Nicotiana glutinosa and Lilium longiflorum

   • Leonne M. van der Leede-Plegt
   • Bernadette C. E. van de Ven
   • Arjen J. van Tunen

   OriginalPaper Pages: 20 - 24

7. Regeneration of transgenic plants of Prunus armeniaca containing the coat protein gene of Plum Pox Virus

   • Margit Laimer da Câmara Machado
   • Artur da Câmara Machado
   • Hermann Katinger

   OriginalPaper Pages: 25 - 29

8. Coat protein mediated resistance to Plum Pox Virus in Nicotiana clevelandii and N. benthamiana

   • Ferdinand Regner
   • Artur da Câmara Machado
   • Hermann Katinger

   OriginalPaper Pages: 30 - 33

9. Effects of some growth regulators on in vitro tuberization in Dioscorea alata L. ‘Brazo fuerte’ and D. abyssinica Hoch.

   • Martine Jean
   • Mario Cappadocia

   OriginalPaper Pages: 34 - 38

10. Callus formation and plant regeneration in standard and microexplants from seedlings of barley (Hordeum vulgare L.)

    • Türid Becher
    • Gudrun Haberland
    • Hans-Ulrich Koop

    OriginalPaper Pages: 39 - 43

11. High frequency adventitious shoot regeneration from immature cotyledons of pea (Pisum sativum L.)

    • Sebahattin Özcan
    • Mehdi Barghchi
    • John Draper

    OriginalPaper Pages: 44 - 47

12. Expression of PVX coat protein gene under the control of extensin-gene promoter confers virus resistance on transgenic potato plants

    • Attila Fehér
    • Konstantin G. Skryabin
    • Dénes Dudits

    OriginalPaper Pages: 48 - 52