Journal of Plant Research

, Volume 126, Issue 1, pp 105–112 | Cite as

Maturation timing of stamens and pistils in the dioecious plant Silene latifolia

  • Wataru Aonuma
  • Yuji Shimizu
  • Kotaro Ishii
  • Naoko Fujita
  • Shigeyuki KawanoEmail author
Regular Paper


The dioecious plant Silene latifolia depends on nocturnal insects for pollination. To increase the chance of cross-pollination, pollen grains seem to be released and stigmas seem to be receptive simultaneously at night. We divided the floral development of S. latifolia into 1–20 stages, and determined the timetables of male and female function. The corolla of both male and female flowers opens at sunset (1900 hours) and closes at sunrise (0900 hours). To investigate the period of the reproductive phase of male and female function, we measured the germination rate on a pollen medium and the pollen germination rate on stigma during the period when stamens and stigmas were viable in the timetable. Male flowers had early- and late-maturing stamens that had the highest pollen viability, germination rate and pollen tube growth at midnight (0000 hours) at 1 day after flowering (DAF) and 0000 hours at 2 DAF. In contrast, female flowers maintained a germination rate of nearly 100 % from 1800 hours at 1 DAF to 1200 hours at 3 DAF. These results suggested that S. latifolia transferred the matured pollen grains from male flowers to female flowers only at night.


Dioecy Silene latifolia Nocturnal species Pollen germination 



This work was supported by a Grant-in-Aid for Exploratory Research (to SK 18657001) from the Ministry of Education, Culture, Sports, Science and Technology, Japan, and by a grant for the Promotion of Science from RIKEN (to SK).

Supplementary material

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Supplementary material 1 (TIFF 1,500 kb)
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Supplementary material 2 (TIFF 1,091 kb)


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Copyright information

© The Botanical Society of Japan and Springer 2012

Authors and Affiliations

  • Wataru Aonuma
    • 1
  • Yuji Shimizu
    • 1
  • Kotaro Ishii
    • 1
  • Naoko Fujita
    • 1
  • Shigeyuki Kawano
    • 1
    Email author
  1. 1.Department of Integrated Biosciences, Graduate School of Frontier SciencesUniversity of TokyoKashiwaJapan

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