Journal of Plant Research

, Volume 124, Issue 2, pp 265–268 | Cite as

Fertility and precocity of Osmunda × intermedia offspring in culture

  • Yoko Yatabe
  • Kaoru Yamamoto
  • Chie Tsutsumi
  • Wataru Shinohara
  • Noriaki Murakami
  • Masahiro Kato
Short Communication


The feasibility of later-generation hybrid production in ferns has not been previously studied, although it is a significant factor in relation to reproductive isolation. Osmunda × intermedia, a hybrid between O. japonica and O. lancea, is semifertile and has moderate spore germination rates. Under the artificial conditions of this study, F2 and F3 offspring were formed. Some of the F2 offspring showed precocity, and some of the F3 offspring also showed precocity. This fertility suggests that introgressive hybridization might be ongoing in nature. This also indicates a currently unknown genetic control over the timing of fertile frond production in Osmunda.


Introgression Osmunda Hybrid fertility Precocity 



We thank S. Matsumoto for his valuable comments in preparation of this manuscript. This study was supported by Grants-in-Aid number 20247006 to M.K. from the Japan Society for the Promotion of Science.


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Copyright information

© The Botanical Society of Japan and Springer 2010

Authors and Affiliations

  • Yoko Yatabe
    • 1
  • Kaoru Yamamoto
    • 3
  • Chie Tsutsumi
    • 2
  • Wataru Shinohara
    • 4
  • Noriaki Murakami
    • 3
  • Masahiro Kato
    • 2
  1. 1.Botanical Gardens, Graduate School of ScienceThe University of TokyoTokyoJapan
  2. 2.Department of BotanyNational Museum of Nature and ScienceTsukubaJapan
  3. 3.Makino HerbariumTokyo Metropolitan UniversityHachiojiJapan
  4. 4.Graduate School of ScienceKyoto UniversityKyotoJapan

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