University of the Ryukyus · Tropical Biosphere Research Center

Research keywordsplant cytogenetics・fern chromosome numbers・fern phylogeny・plant phylogeography・MIG-seq・island flora・invasive plant distribution

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• Chromosome Numbers of Two Japanese Antrophyum, A. obovatum and A. formosanum (Pteridaceae, Polypodiales)2026 · Cytological observation was conducted for the first time on Japanese Antrophyum (Pteridaceae), namely A. obovatum and A. formosanum. The chromosome numbers of the two species were counted as 2n = 240 for the former and 2n = ca. 240 for the latter. Considering the basic chromosome number is x = 30, they are considered as octoploid species. The chromosome numbers, 2n = 240, are first reported for them. Our study demonstrated the pervasiveness of polyploidy in the genus.
• 西表島における外来植物アメリカハマグルマ（キク科）の分布状況2026 · 内貴 章世, 山本 武能, 井村 信弥, 渡辺 信
• キバナハマヒルガオ（ヒルガオ科）を西表島，石垣島，宮古島に記録する2025 · 内貴 章世, 和智 仲是, 森脇 大樹, 中西 弘樹
• Phylogenetic Relationships of Eurya (Pentaphylacaceae) with a Focus on Japanese Species2025 · Tetsuo OHI-TOMA, Emiko OGURI, Harue ABE, Hidetoshi KATO, Masaharu AMANO, Mong-Huai SU, Hanghui KONG, Hidetoshi NAGAMASU, Akiyo NAIKI

• 台風撹乱が湿潤亜熱帯林の植物種多様性に与える影響の林冠３Dモデルによる検証2023 · 基盤研究(C)
• マチン科ホウライカズラ属の環東シナ海地域における種分化と花形態の進化に関する研究2021 · 基盤研究(C)
• 二型花柱性ボロボロノキ（ボロボロノキ科）の送粉様式と分布拡大過程に関する研究2019 · 基盤研究(C)

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