ID | 59976 |
フルテキストURL | |
著者 |
Mimura, Makiko
Department of Biology, Graduate School of Natural Science and Technology, Okayama University
Suga, Mihoko
Graduate School of Agriculture, Tamagawa University
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抄録 | Although hybridization frequently occurs among plant species, hybrid zones of divergent lineages formed at species boundaries are less common and may not be apparent in later generations of hybrids with more parental-like phenotypes, as a consequence of backcrossing. To determine the effects of dispersal and selection on species boundaries, we compared clines in leaf traits and molecular hybrid index along two hybrid zones on Yakushima Island, Japan, in which a temperate (Rubus palmatus) and subtropical (Rubus grayanus) species of wild raspberry are found. Leaf sinus depth in the two hybrid zones had narrower clines at 600 m a.s.l. than the molecular hybrid index and common garden tests confirmed that some leaf traits, including leaf sinus depth that is a major trait used in species identification, are genetically divergent between these closely related species. The sharp transition in leaf phenotypic traits compared to molecular markers indicated divergent selection pressure on the hybrid zone structure. We suggest that species boundaries based on neutral molecular data may differ from those based on observed morphological traits.
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キーワード | hybrid zone
introgression
morphology
species identification
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発行日 | 2020-06-15
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出版物タイトル |
Ecology and Evolution
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出版者 | Wiley
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ISSN | 2045-7758
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © 2020 The Authors.
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論文のバージョン | publisher
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1002/ece3.6473
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ライセンス | https://creativecommons.org/licenses/by/4.0/
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助成機関名 |
日本学術振興会
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助成番号 | JP17K07571
25840161
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