2015年7月
Comparative pollination biology in two sympatric varieties of Cypripedium macranthos (Orchidaceae) on Rebun Island, Hokkaido, Japan
PLANT SPECIES BIOLOGY
- ,
- 巻
- 30
- 号
- 3
- 開始ページ
- 225
- 終了ページ
- 230
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1111/1442-1984.12055
- 出版者・発行元
- WILEY-BLACKWELL
Cypripedium macranthos sensu lato typically has purple-pink flowers with no nectar and harvestable pollen. On Rebun Island, Hokkaido, Japan, purple-pink-flowered C.macranthos var. macranthos individuals rarely grow among numerous pale-cream-flowered C.macranthos var. rebunense plants. In both varieties, flower size is similar, their flowering periods completely overlap, and they share the same pollinator (Bombus pseudobaicalensis). However, in only one of 12 years from 2001 to 2012 did var. macranthos attain an annual fruit-set ratio (an estimate of pollination success) higher than that of sympatric var. rebunense plants. These findings strongly suggest that in C.macranthos on Rebun Island, flower color results in the differential pollination success, because the pollinator prefers pale-cream Cypripedium flowers and/or avoids purple-pink ones, thereby producing pollinator-mediated selection favoring pale-cream flowers.
- リンク情報
- ID情報
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- DOI : 10.1111/1442-1984.12055
- ISSN : 0913-557X
- eISSN : 1442-1984
- Web of Science ID : WOS:000357429800007