Kobe University Repository : Kernel タイトル Flowers adaptively face down-slope in 10 forest-floor herbs Title 著者 Ushimaru, Atushi / Kawase, Daiju / Imamura, Akiko Author(s) 掲載誌・巻号・ページ Functional Ecology,20(4):585-591 Citation 刊行日 2006-06 Issue date 資源タイプ Journal Article / 学術雑誌論文 Resource Type 版区分 author Resource Version 権利 Rights DOI 10.1111/j.1365-2435.2006.01153.x JaLCDOI URL http://www.lib.kobe-u.ac.jp/handle_kernel/90001106 PDF issue: 2021-10-03 Ushimaru et al. 1 Running head: Flower orientation on slopes in angiosperms Title: Flowers adaptively face down-slope in ten forest-floor herbs Atushi Ushimaru 1* Daiju Kawase2 and Akio Imamura1 1Research Institute for Humanity and Nature, 335 Takashimacho, Kyoto 602-0878, Japan 2Center for Ecological Research, Kyoto University Kamitanokami, Otsu 520-2113, Japan * Corresponding author Present address: Department of Human Development, Kobe University 3-11 Tsurukabuto, Kobe 657-8501 tel +81-(0)78-803-7746 fax +81-(0)78-803-7929 e-mail:
[email protected] Summary 1. An animal-pollinated plant living on a slope should orientate its flowers down-slope towards the more open space if by doing so it receives more pollinator visits and thereby achieves increased reproductive success. 2. We measured flower orientation relative to slope direction on individuals of ten species of forest-floor herbs in cool temperate forests in Japan. For one of these species, Erythronium japonicum, we also manipulated flower orientation to test experimentally for effects on both male and female reproductive function. 3. In all ten species, flowers were preferentially orientated down-slope.