1. Preface

   OriginalPaper Pages: 1 - 1

2. Relevance of sexual polyploidization for crop improvement – A review

   • M.S. Ramanna
   • E. Jacobsen

   OriginalPaper Pages: 3 - 8

3. Designing grasses with a future – combining the attributes of Lolium and Festuca

   • H.M. Thomas
   • W.G. Morgan
   • M.W. Humphreys

   OriginalPaper Pages: 19 - 26

4. Polyploidy and sexual polyploidization in the genus Vaccinium

   • P.M. Lyrene
   • N. Vorsa
   • J.R. Ballington

   OriginalPaper Pages: 27 - 36

5. Occurrence, inheritance and use of reproductive mutants in alfalfa improvement

   • Gianni Barcaccia
   • Stefano Tavoletti
   • Fabio Veronesi

   OriginalPaper Pages: 37 - 56

6. Production of intergeneric hybrids between Brassica juncea and Diplotaxis virgata through ovary culture, and the cytology and crossability of their progenies

   • N. Inomata

   OriginalPaper Pages: 57 - 64

7. Evidence for the production of unreduced gametes by tetraploid Rosa hybrida L.

   • L. Crespel
   • S. Gudin

   OriginalPaper Pages: 65 - 69

8. Pollen donor impact on progenies of pseudogamous blackberries (Rubus subgen. Rubus)

   • Gun Werlemark
   • Hilde Nybom

   OriginalPaper Pages: 71 - 80

9. Formation of 2n gametes in durum wheat haploids: Sexual polyploidization

   • Prem P. Jauhar

   OriginalPaper Pages: 81 - 94

10. Occurrence of numerically unreduced (2n) gametes in Alstroemeria interspecific hybrids and their significance for sexual polyploidisation

    • M.S. Ramanna
    • A.G.J. Kuipers
    • E. Jacobsen

    OriginalPaper Pages: 95 - 106

11. Elucidation of meiotic nuclear restitution mechanisms in potato through analysis of microtubular cytoskeleton

    • Clara Conicella
    • Antonella Capo
    • Luigi M. Monti

    OriginalPaper Pages: 107 - 115

12. Cytological studies of 2n male gamete formation in sugarcane, Saccharum L.

    • L.M. Bielig
    • A. Mariani
    • N. Berding

    OriginalPaper Pages: 117 - 124

13. Integration of transgenes into sexual polyploidization schemes for potato (Solanum tuberosum L.)

    • Alexander A.T. Johnson
    • Richard E. Veilleux

    OriginalPaper Pages: 125 - 138

14. Occurrence of 2n and jumbo pollen in the Brazilian ginseng (Pfaffia glomerata and P. tuberosa)

    • Onildes Maria Taschetto
    • Maria Suely Pagliarini

    OriginalPaper Pages: 139 - 145