Scientific Contributions of Sakugoro Hirase

  • Toshiyuki Nagata


On September 9,1996, the centenary ceremony to commemorate the discovery of the sperm of Ginkgo biloba was held at the Botanical Gardens, Faculty of Science, the University of Tokyo (Fig. 1). This date was chosen because Sakugoro Hirase [1] reported that he observed swimming Ginkgo sperm for the first time on the same date in 1896. Accompanying the ceremony, an international symposium and a public forum were held to commemorate the great discovery and discuss the scientific progress that arose from the finding. As I played a role in organizing the centenary events, I was asked by an editor of this special issue to give an account of the scientific contributions of Sakugoro Hirase (Fig. 1). As several articles on this subject have been published, I am concerned that this may partly duplicate previous reports and thus initially I hesitated to write this chapter. Nonetheless, I am prepared to undertake this task because some of his activities have simply been forgotten.


Botanical Garden Pollen Development Ginkgo Biloba Scientific Contribution Japanese Scientist 
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Copyright information

© Springer-Verlag Tokyo 1997

Authors and Affiliations

  • Toshiyuki Nagata
    • 1
    • 2
  1. 1.Department of Biological SciencesGraduate School of ScienceBunkyo-ku, Tokyo 113Japan
  2. 2.Botanical Gardens, Faculty of ScienceUniversity of TokyoBunkyo-ku, Tokyo 112Japan

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