Table of Contents

Preface. 1 Polyamines and Gene Expression of Biosynthetic Enzymes in Sexual Plant Reproduction; N. Bagni, A. Tassoni and M. Franceschetti.. 2 Carotenoid Biosynthesis in plant Reproductive Organs: Regulation and Possible Functions;Giovanni Giuliano. 3 Lipid Accumulation and Related Gene Expression in Gametophytic and Sporophytic Anther Tissues; P. Piffanelli and D.J. Murphy. 4 Sex Determination or Sexual Dimorphism? On Facts and Terminology; Lardon Andr, Delichre Catherine, Monger Franoise and Negrutiu Ioan. 5 Meiosis; Trude Schwarzacher. 6 Regulation of Gene Expression During Pollen Development; George J. Wullems and Jan A.M. Schrauwen. 7 Double Fertilization in Flowering Plants: Origin, Mechanisms and New Information from in Vitro Fertilization; Jean-Emmanuel Faure. 8 Molecular Approach to Female Meiosis in Petunia HybridaAndrea Porceddu, Chiaraluce Moretti, Silvia Sorbolini, Samantha Guiderdone, Luisa Lanfaloni, Franco Lorenzetti and Mario Pezzotti. 9 Homomorphic Self-Incompatibility in Flowering Plants; D. de Nettancourt. 10 Cell Death of Self-Incompatible Pollen Tubes: Necrosis or Apoptosis? Anja Geitmann. 11 Aspects of the Cell Biology of Pollination and Wide Hybridization; J.S Heslop-Harrison. 12 Pollen Coat Signals With Respect to Pistil Activation and Ovule Penetration in Gasteria Verrucosa (Mill.) H.Duval; M.T.M.Willemse. 13 Tapetum and Orbicules (Ubisch Bodies): Development, Morphology and Role of Pollen Grains and Tapetal Orbicules in Allergenicity; Gamal El-Ghazaly. 14 Development and Substructures of Pollen Grains Wall; Gamal El-Ghazaly. 15 Mechanisms of Microspore Polarity and Differential Cell Fate Determination in Developing Pollen; David Twell. 16 Genetic Control of Pollen Development and Function; M. Sari-Gorla and M. E. P. 17 The Use of the Vibrating Probe Technique to Study Steady Extracellular Currents During Pollen Germination and Tube Growth; Alan M. Shipley and Jose'A. Feijo. 18 The Role of Calcium and Associated Proteins in Tip Growth and Orientation; Rui Malh. 19 Measuring Ion Channel Activity During Polar Growth of Pollen Tubes; Fiona Armstrong, Rainer Benkert, Friedrich-Wilhelm Bentrup, and Gerhard Obermeyer. 20 The Rheological Properties of the Pollen Tube Cell Wall; Anja Geitmann. 21 Actin Filament- and Microtubule-Based Motor Systems: Their Concerted Action During Pollen Tube Growth; Alessandra Moscatelli, Giampiero Cai and Mauro Cresti. 22 The Pollen Tube Oscillator: Towards a Molecular Mechanism of Tip Growth? Jos A. Feij. 23 Fertilization and Zygotic Embryo Development in Vitro; Erhard Kranz, Jochen Kumlehn and Thomas Dresselhaus. 24 MADS Box Genes Controlling Ovule and Seed Development in Petunia; Lucia Colombo and Gerco C. Angenent. 25 Domains Of Gene Expression in Developing Endosperm; Heinz-Albert Becker, Gregorio Hueros, Monika Maitz, Serena Varotto, Antonio Serena, and Richard D. Thompson. 26 Advances on the Study of Sexual Reproduction in the Cork-Tree (Quercus suber L.), Chestnut (Castanea sativa Mill.) and in Rosaceae (Apple and Almond); J.A. Feij, A.C. Certal, L. Boavida, I. Van Nerum, T. Valdiviesso, M.M. Oliveira, W. Broothaerts. 27 Pollen as Food for Humans and Animals and as Medicine; F. LINSKENS. 28 Field Release of Transgenic Virus Tolerant Tomatoes; S.Valanzuolo, M.M. Monti, M. Colombo, G. Cassani. 29 Grapevine Biotechnology Coming on to the Scene; Rita Vignani, Monica Scali and Mauro Cresti