1. Embryogeny of gymnosperms: advances in synthetic seed technology of conifers

   • S. M. Attree
   • L. C. Fowke

   Review Paper Pages: 1 - 35

2. Somatic embryogenesis and plant regeneration from cell suspensions of Exacum affine

   • Holger Ørnstrup
   • Jens Peter Mølgaard
   • Birger Farestveit

   Original Research Paper Pages: 37 - 41

3. In vitro regeneration of commercial cultivars of subterranean clover

   • Lance C. Heath
   • Shih-Foong Chin
   • Thomas J. V. Higgins

   Original Research Paper Pages: 43 - 48

4. Plant regeneration from callus and protoplasts in Medicago polymorpha

   • G. M. Scarpa
   • F. Pupilli
   • S. Arcioni

   Original Research Paper Pages: 49 - 57

5. Comparison of media for their aptitude in wheat anther culture

   • Marie-Claude Trottier
   • Jean Collin
   • André Comeau

   Original Research Paper Pages: 59 - 67

6. Does altered nitrogen metabolism and H₂O₂ accumulation explain the vitrified status of the fully habituated callus of Beta vulgaris (L.)?

   • Frédérik Le Dily
   • Claude Huault
   • Jean-Pierre Billard

   Original Research Paper Pages: 69 - 74

7. Embryogenesis and organogenesis in cultured anthers of an oil yielding crop niger (Guizotia abyssinica. Cass)

   • A. Sarvesh
   • T. P. Reddy
   • P. B. Kavi Kishor

   Original Research Paper Pages: 75 - 80

8. In vitro culture of Dianthus zeyheri subsp. natalensis, a South African carnation

   • N. R. Crouch
   • J. van Staden

   Original Research Paper Pages: 81 - 85

9. Some morphological and biochemical peculiarities of Datura innoxia callus- and regenerated cultures

   • Natasha Missaleva
   • Gizella Petri
   • Éva Szõke

   Original Research Paper Pages: 87 - 92

10. Optimization of polyethylene glycol mediated transient gene expression in pea protoplasts

    • Mogens Nicolaisen
    • Gert B. Poulsen

    Original Research Paper Pages: 93 - 97

11. Somaclonal variation within poplar

    • P. L. E. Antonetti
    • J. Pinon

    Original Research Paper Pages: 99 - 106