SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology)
I observed the sun-tracking behavior, temperature increment within flowers, and seed production of mountain avens, Dry us oclopclala L , occurring near Bragger glacier in Ny-Alesund (78°55'N, 11°56'E), Svalbard in Norway. The flowers showed sun-tracking movement on sunny days, but the move...
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ftnipr:oai:nipr.repo.nii.ac.jp:00005371 2023-05-15T14:59:17+02:00 SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology) ワダ ナオヤ Naoya WADA 1998-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5371 http://id.nii.ac.jp/1291/00005371/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5371&item_no=1&attribute_id=18&file_no=1 en eng Proceeding Department of Biosphere Science, Faculty of Science, Toyama University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5371 http://id.nii.ac.jp/1291/00005371/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 11, 128-136(1998-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5371&item_no=1&attribute_id=18&file_no=1 artificial warming cross pollination flower heliotropism High Arctic seed production Departmental Bulletin Paper P(論文) 1998 ftnipr 2023-02-25T20:13:31Z I observed the sun-tracking behavior, temperature increment within flowers, and seed production of mountain avens, Dry us oclopclala L , occurring near Bragger glacier in Ny-Alesund (78°55'N, 11°56'E), Svalbard in Norway. The flowers showed sun-tracking movement on sunny days, but the movement was mostly found around noon and was not so active throughout a sunny day. The temperature increment of the gynoecmm in flowers facing the sun was ca 2℃ higher than in flowers with their back to the sun Petal removal resulted in considerable reduction of the gynoecmm temperature Insects (mostly mosquitoes) visiting flowers were very infrequent, suggesting that a severe pollinator limitation restricted the crosspollination. During the experiments, flowers of Dryas octopetala did not produce any developed seeds under natural condition (0% seed-set) Cross-pollinated flowers showed 8% seed-set, while flowers which were artificially warmed by small green-houses during the flowering period showed 60% seed-set, indicating that the reproduction of D octopetala is strongly restricted by low temperature during the flowering period, rather than by pollinator limitation, in the population of Ny-Ålesund, Svalbard These results suggest that the sun-tracking behavior and parabola-shaped flower structure with large petals are important for seed-setting success by increasing the gynoecmm temperature. Report Arctic Dryas octopetala glacier glacier Mountain avens Ny Ålesund Ny-Ålesund Polar Biology Proceedings of the NIPR Symposium on Polar Biology Svalbard National Institute of Polar Research Repository, Japan Arctic Svalbard Ny-Ålesund Norway |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
artificial warming cross pollination flower heliotropism High Arctic seed production |
spellingShingle |
artificial warming cross pollination flower heliotropism High Arctic seed production ワダ ナオヤ Naoya WADA SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology) |
topic_facet |
artificial warming cross pollination flower heliotropism High Arctic seed production |
description |
I observed the sun-tracking behavior, temperature increment within flowers, and seed production of mountain avens, Dry us oclopclala L , occurring near Bragger glacier in Ny-Alesund (78°55'N, 11°56'E), Svalbard in Norway. The flowers showed sun-tracking movement on sunny days, but the movement was mostly found around noon and was not so active throughout a sunny day. The temperature increment of the gynoecmm in flowers facing the sun was ca 2℃ higher than in flowers with their back to the sun Petal removal resulted in considerable reduction of the gynoecmm temperature Insects (mostly mosquitoes) visiting flowers were very infrequent, suggesting that a severe pollinator limitation restricted the crosspollination. During the experiments, flowers of Dryas octopetala did not produce any developed seeds under natural condition (0% seed-set) Cross-pollinated flowers showed 8% seed-set, while flowers which were artificially warmed by small green-houses during the flowering period showed 60% seed-set, indicating that the reproduction of D octopetala is strongly restricted by low temperature during the flowering period, rather than by pollinator limitation, in the population of Ny-Ålesund, Svalbard These results suggest that the sun-tracking behavior and parabola-shaped flower structure with large petals are important for seed-setting success by increasing the gynoecmm temperature. |
format |
Report |
author |
ワダ ナオヤ Naoya WADA |
author_facet |
ワダ ナオヤ Naoya WADA |
author_sort |
ワダ ナオヤ |
title |
SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology) |
title_short |
SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology) |
title_full |
SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology) |
title_fullStr |
SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology) |
title_full_unstemmed |
SUN-TRACKING FLOWER MOVEMENT AND SEED PRODUCTION OF MOUNTAIN AVENS, DRYAS OCTOPETALA L. IN THE HIGH ARCTIC, NY-ÅLESUND, SVALBARD (19th Symposium on Polar Biology) |
title_sort |
sun-tracking flower movement and seed production of mountain avens, dryas octopetala l. in the high arctic, ny-ålesund, svalbard (19th symposium on polar biology) |
publisher |
Proceeding |
publishDate |
1998 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5371 http://id.nii.ac.jp/1291/00005371/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5371&item_no=1&attribute_id=18&file_no=1 |
geographic |
Arctic Svalbard Ny-Ålesund Norway |
geographic_facet |
Arctic Svalbard Ny-Ålesund Norway |
genre |
Arctic Dryas octopetala glacier glacier Mountain avens Ny Ålesund Ny-Ålesund Polar Biology Proceedings of the NIPR Symposium on Polar Biology Svalbard |
genre_facet |
Arctic Dryas octopetala glacier glacier Mountain avens Ny Ålesund Ny-Ålesund Polar Biology Proceedings of the NIPR Symposium on Polar Biology Svalbard |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5371 http://id.nii.ac.jp/1291/00005371/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 11, 128-136(1998-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5371&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766331398855065600 |