1. Anther developmental defects in Arabidopsis thaliana male-sterile mutants

   • Paul M. Sanders
   • Anhthu Q. Bui
   • R. B. Goldberg

   ORIGINAL PAPER Pages: 297 - 322

2. Mitochondrial gene expression in developing male gametophytes of male-fertile and S male-sterile maize

   • Lan-Ying Wen
   • Christine D. Chase

   ORIGINAL PAPER Pages: 323 - 330

3. Effect of pollen source and pollen ploidy on endosperm formation and seed set in pseudogamous apomictic Paspalum notatum

   • Camilo L. Quarin

   ORIGINAL PAPER Pages: 331 - 335

4. Characterization of an anther-expressed protein kinase gene in the potato Solanum berthaultii and its antisense inhibition in transgenic plants

   • J.-Q. Liu
   • G. Leggewie
   • R. D. Thompson

   ORIGINAL PAPER Pages: 336 - 346

5. Sexual reproduction in the cork oak (Quercus suber L.). I. The progamic phase

   • Leonor C. Boavida
   • M. Carolina Varela
   • J. A. Feijó

   ORIGINAL PAPER Pages: 347 - 353

6. Micropylar exudates in Douglas fir – timing and volume of production

   • P. von Aderkas
   • Cathy Leary

   SHORT COMMUNICATION Pages: 354 - 356

7. Morphological characterisation of wheat (T. aestivum L.) egg cell protoplasts isolated from immature and overaged caryopses

   • Z. Pónya
   • I. Tímár
   • B. Barnabás

   SHORT COMMUNICATION Pages: 357 - 359