Consequences of differences in flowering date on seed production in Heloniopsis orientalis (Liliaceae)

Shin Ichi Morinaga, Kazuki Tsuji, Satoki Sakai

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We examined the consequences of differences in flowering date on seed production in the self-compatible herb Heloniopsis orientalis. The number of selfed seeds per fruit, as determined by microsatellite markers, did not depend on when the plant flowered, whereas the number of outcrossed seeds per fruit increased with later flowering dates. Consequently, the selfing rate decreased with later flowering dates. The number of seeds (including both selfed and outcrossed ones) per fruit and the seed:ovule ratio increased with later flowering dates. We also examined the effects of pollinators and plant size on seed production. The visitation rate of Diptera did not depend on the flowering season, whereas that of Hymenoptera markedly increased as the flowering season progressed. Diptera stayed longer than Hymenoptera on each plant and flower. Seed production per fruit did not depend on plant size. Thus, the change in selfing rate associated with later flowering dates resulted from the seasonal change in pollinators rather than plant size.

Original languageEnglish
Pages (from-to)1153-1158
Number of pages6
JournalAmerican Journal of Botany
Volume90
Issue number8
DOIs
Publication statusPublished - 2003 Aug 1

Keywords

  • Flowering date
  • Heloniopsis orientalis
  • Japan
  • Liliaceae
  • Plant size
  • Pollinator
  • Seed production
  • Selfing rate

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Plant Science

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