1. Incompatibility in angiosperms

   • D. de Nettancourt

   REVIEW Pages: 185 - 199

2. A short severe heat shock is required to induce embryogenesis in late bicellular pollen of Brassica napus L.

   • P. Binarova
   • Gerd Hause
   • M. M. Lookeren Campagne

   ORIGINAL PAPER Pages: 200 - 208

3. In vitro pollen tube growth and penetration of female gametophyte in Douglas fir (Pseudotsuga menziesii)

   • Danilo D. Fernando
   • J. N. Owens
   • Tokushiro Takaso

   ORIGINAL PAPER Pages: 209 - 216

4. Freeze-fracture of sperm of Plumbago zeylanica L. in pollen and in vitro

   • Darlene Southworth
   • Gregory Strout
   • S. D. Russell

   ORIGINAL PAPER Pages: 217 - 226

5. Involvement of SLR1 genes in pollen adhesion to the stigmatic surface in Brassicaceae

   • D.-T. Luu
   • P. Heizmann
   • M. Cappadocia

   ORIGINAL PAPER Pages: 227 - 235

6. Effects of pollination intensity on the vigor of the sporophytic and gametophytic generation of Cucurbita texana

   • Magnús H. Jóhannsson
   • A. G. Stephenson

   ORIGINAL PAPER Pages: 236 - 240

7. The progamic phase, embryo and endosperm development in an intraspecific Tulipa gesneriana L. cross and in the incongruent interspecific cross T. gesneriana × T. agenensis DC.

   • M. G. M. Van Creij
   • J. L. van Went
   • D. M. F. J. Kerckhoffs

   ORIGINAL PAPER Pages: 241 - 249

8. Genomic sequence and expression of S-locus gene in radish (Raphanus sativus L.)

   • S. Niikura
   • S. Matsuura

   SEQUENCE UPDATE Pages: 250 - 252