Pattern of Breeding-System Change in the Izu Islands in Campanula punctata : Bumblebee-Absence Hypothesis :

NDLデジタルコレクション 被引用文献4件
  • INOUE,KEN
    Department of General Education, Akikusa Gakuen Junior College:(Present address)Biological Institute and Herbarium, Faculty of Liberal Arts, Shinshu University

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Bagging experiments of Campanula punctata were carried out in natural populations on the six of the Izu Islands and mainland Honshu to investigate distribution of self-incompatibility. Additional observations on pollinators of Campanula supplementary to the previous study (Inoue and Amano, 1986) were made. Most of the plants on Honshu and Oshima Island showed self-incompatibility : while almost all plants in the Izu Islands except Oshima were self-compatible. Bumblebees did not exist in the Izu Islands except Oshima and the dominant pollinators of Campanula in these islands were halictid bees. These results support a hypothesis that a decrease in pollination efficiency in the absence of bumblebees results in the evolution of breeding systems in Campanula.

収録刊行物

  • Plant species biology

    Plant species biology 3 (2), 125-128, 1989-03-30

    Society for the Study of Species Biology

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