Female and male fitness consequences of clonal growth in a dwarf bamboo population with a high degree of clonal intermingling

Ayumi Matsuo, Hiroshi Tomimatsu, Jun Ichirou Suzuki, Tomoyuki Saitoh, Shozo Shibata, Akifumi Makita, Yoshihisa Suyama

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Background and Aims: Although many studies have reported that clonal growth interferes with sexual reproduction as a result of geitonogamous self-pollination and inbreeding depression, the mating costs of clonal growth are expected to be reduced when genets are spatially intermingled with others. This study examined how clonal growth affects both female and male reproductive success by studying a population of a mass-flowering plant, Sasa veitchii var. hirsuta, with a high degree of clonal intermingling. Methods: In a 10 × 10 m plot, genets were discriminated based on the multilocus genotypes of 11 nuclear microsatellite loci. The relationships between genet size and the components of reproductive success were then investigated. Male siring success and female and male selfing rates were assessed using paternity analysis. Key Results: Atotal of 111 genetswere spatiallywell intermingled with others. In contrast to previous studies with species forming distinct monoclonal patches, seed production linearly increased with genet size. While male siring success was a decelerating function of genet size, selfing rates were relatively low and not related to genet size. Conclusions: The results, in conjunction with previous studies, emphasize the role of the spatial arrangement of genets on both the quantity and quality of offpsring, and suggest that an intermingled distribution of genets can reduce the mating costs of clonal growth and enhance overall fitness, particularly female fitness.

Original languageEnglish
Pages (from-to)1035-1041
Number of pages7
JournalAnnals of botany
Volume114
Issue number5
DOIs
Publication statusPublished - 2014 Oct 1

Keywords

  • Clonal growth
  • Genet size
  • Inbreeding depression
  • Reproductive success
  • Sasa veitchii var. Hirsuta
  • Selfing
  • Spatial genetic structure

ASJC Scopus subject areas

  • Plant Science

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