Potential Seawater Dispersal of Cypselas of Sphagneticola trilobata (L.) Pruski (Asteraceae), an Aggressive Invasive Alien Plant

• DENDA TETSUO

  Faculty of Science, University of the Ryukyus

• SHIMABUKURO TAICHI

  Faculty of Science, University of the Ryukyus

• NOHARA HARUNA

  Faculty of Science, University of the Ryukyus

• YOKOTA MASATSUGU

  Faculty of Science, University of the Ryukyus

抄録

Sphagneticola trilobata (L.) Pruski (Asteraceae), considered to be among the world's worst invasive alien species, is indigenous to tropical America, but is now widely distributed in tropical and subtropical regions worldwide. In contrast to its vigorous vegetative reproduction, S. trilobata is thought to produce few fertile fruits. In this study, we investigated cypsela production in S. trilobata plants naturalized in the subtropical Ryukyu Archipelago, Japan, and assessed the viability of cypselas after exposure to seawater. Plants of S. trilobata produce an average of 7.8 cypselas per capitulum with a germination rate of more than 80%. Cypselas of S. trilobata showed high buoyancy in seawater and retained viability after exposure to seawater for 90 days. For preventive management of this species, potential seawater dispersal of cypselas, in addition to vegetative reproduction, should be considered.

収録刊行物

• Acta Phytotaxonomica et Geobotanica

  Acta Phytotaxonomica et Geobotanica 63 (2), 99-105, 2013

  日本植物分類学会

キーワード

• conservation
• exotic plant
• fruit buoyancy
• Ryukyu Archipelago
• seed dispersal
• seed production
• Singapore daisy
• Wedelia trilobata

詳細情報

• CRID: 1390001205269823360
• NII論文ID: 110009592965
• NII書誌ID: AA11586265
• DOI: 10.18942/apg.kj00008580364
• ISSN: 21897042
• ISSN: 13467565
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可