1. Structure, ultrastructure, and histochemistry of the pollen tube pathway in the milkweed Asclepias exaltata L.

   • Tammy L. Sage
   • Elizabeth G. Williams

   Original Paper Pages: 257 - 265

2. A novel approach to the analysis of the initiation of embryo development in gramineae

   • F. Matzk
   • H.-M. Meyer
   • I. Schubert

   Original Paper Pages: 266 - 272

3. Induction of autonomous endosperm in Lupinus luteus, Helleborus niger and Melandrium album by in vitro culture of unpollinated ovaries

   • R. Mól
   • A. Betka
   • M. Wojciechowicz

   Original Paper Pages: 273 - 277

4. Localisation and expression of arabinogalactan-proteins in the ovaries of Nicotiana alata Link and Otto

   • Alison M. Gane
   • Adrienne E. Clarke
   • Antony Bacic

   Original Paper Pages: 278 - 282

5. A genetic model for the endosperm balance number (EBN) in the wild potato Solanum acaule Bitt. and two related diploid species

   • E. L. Camadro
   • R. W. Masuelli

   Original Paper Pages: 283 - 288

6. Esterases in pollen and stigma of Brassica

   • Mary Lavithis
   • Prem L. Bhalla

   Original Paper Pages: 289 - 298

7. An investigation of the role of the anther tapetum during microspore development using genetic cell ablation

   • Michael R. Roberts
   • Elaine Boyes
   • Rod J. Scott

   Original Paper Pages: 299 - 307

8. Variation in generative cell plastid nucleoids and male fertility in Medicago sativa

   • R. N. Keys
   • S. E. Smith
   • H. L. Mogensen

   Original Paper Pages: 308 - 312

9. Deleterious effect of minimal enzymatic treatments on the development of isolated maize embryo sacs in culture

   • Nathalie Leduc
   • Elisabeth Matthys-Rochon
   • Christian Dumas

   Original Paper Pages: 313 - 317

10. New MADS box domains in Asparagus officinalis L.

    • Heather G. Miller
    • Thomas D. Kocher
    • Brent Loy

    Sequence Update Pages: 318 - 320