{"created":"2022-01-28T01:20:59.095774+00:00","id":2005733,"links":{},"metadata":{"_buckets":{"deposit":"4cc9af49-fc91-408e-8c50-6ce696f40912"},"_deposit":{"id":"2005733","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2005733"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02005733","sets":["1642838403123","1642838403551:1642838407312"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"沖縄産マングローブ樹種の開花・受粉機構の検討とポリネーターの検索","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Flowering, pollination and pollinators of mangroves in Okinawa","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"馬場, 繁幸","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Baba, Shigeyuki","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Bruguiera gymnorrhiza"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Kandelia candel"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"mangroves"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"microsatellite"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"pollen bag"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"pollination"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"pollinator"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"self-pollination"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"オヒルギ"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"ポリネーター"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"マイクロサテライト"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"マングローブ"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"メヒルギ"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"他家受粉"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"受粉"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"受粉機構"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"受粉率"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"結実"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"自家受粉"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"花粉発が"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"花粉袋"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"訪花昆虫"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"開花"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"科研費番号: 14560124","subitem_description_type":"Other"},{"subitem_description":"平成14年度～平成16年度科学研究費補助金(基礎研究(C)(2))研究成果報告書","subitem_description_type":"Other"},{"subitem_description":"研究概要(和文)：研究期間は平成14年度から平成16年度までの3年間であった。野外調査は沖縄島金武町億首川のマングローブ林を中心に実施され、定期的にフィールドでの観察調査と試料の採取行ったが、特に平成16年は台風による影響が大きかった。オヒルギは周年開花していたが、夏季の6月から冬季の12月の間に開花したものだけに結実が見られた。それ以外の時期である1月から5月までの花では、葯は裂開することがほとんどなく、しかも花粉の発芽能力も低かった。夏季の7月にオヒルギのつぼみが裂開する前に、つぼみに花粉袋をかけ訪花動物(ポリネーター)の訪花を妨げると、開花、すなわち萼片裂開後に、花弁が裂開した花は8%以下であった。それに対して花粉袋をかけなかった無処理のつぼみでは約94%の花で花弁の裂開が生じ、雄蕊が裸出して葯から花粉が飛散した。比較的大型のクロアナバチやリュウキュウメジロの訪花は花弁の裂開を促進し、葯から花粉を飛散させた。しかしながら、同じ訪花動物であっても小型の昆虫や口吻をのばして吸蜜するホウジャク類は、花弁を開花させること、すなわち雄蕊を裸出することがほんどないので、花粉媒介者としての役割は小さかった。また、花粉袋をかけても8%程度の花では花弁が裂開、すなわち葯が裸出することで花粉が飛散し、子房の肥大も認められた。したがって、オヒルギにつては、自然状態下でも比較的高い割合で自家受粉が行われている可能性が示唆された。一般に木本植物の自家受粉率は低いとされたが、マイクロサテライトを用いた解析の結果でもオヒルギとメヒルギでは自家受粉による結実が示唆された。以上の結果から、自家受粉で結実できる受粉機構をもっているオヒルギやメヒルギは、少数の個体であっても移住や集団(個体群)の維持を可能とさせ、マングローブ分布の北限近くでも群落を維持させているものと考察した。","subitem_description_type":"Other"},{"subitem_description":"研究概要(英文)：The duration of this research was 3 years, 2002 to 2004. The main research sites were mangrove forests at the mouth of Okukubi River, Kin, Okinawa, Japan. Regular observations and sample collections were made when possible at weekly intervals. At times especially during 2004, typhoon events made sampling difficult. Bruguiera gymnorrhiza flowing phenology occurred throughout the year, while that of Kandelia candel was once a year. Although B.gymnorrhiza flowered throughout the year, successful fruiting was restricted to the period June to December. Anthers of flowers formed from January to May did not always open and pollen germination abilities of these flowers were very low. When flowers of B.gymnorrhiza were covered with pollen bags to prevent visits by pollinators, rates of petal opening were less than 8 %. In contrast, rates of petal opening under natural conditions were approximately 94 %. Visits to flowers by larger pollinators, such as Sphex argentatus and Zosteropus japonica loochooensis, helped to induce full petal opening and enhance pollen dispersal from anthers. However, flower visiting by very small insects (including moths) such as Macroglossum mediovitta, failed to help petal opening. This suggested that their roles as pollinators were not so important compared to those of lager pollinators. Under the artificial pollen bag treatment of B.gymnorrhiza flowers (prevent cross-pollination) petal-opening rates of such flowers to disperse pollen were approximately 8 %. Within these limited petal-openings some expansions of ovules caused by the self-pollination could be recognized. This indicates that some self-pollination might be possible under natural conditions. Nevertheless, in general, it seems that self-pollination rates of woody plants are small. However, results of microsatellite analyses also suggested that relatively higher self-pollination rates can occur in B.gymnorrhiza and K.candel. Thus these results suggest that mangrove tree species having some self-pollination abilities, such as B.gymnorrhiza and K.candel, had some advantages of easier migration and, once in a new ecohabitat, are able to maintain their communities more efficiently than other mangrove species that lack these self-pollination abilities.","subitem_description_type":"Other"},{"subitem_description":"未公開：P.1～P.24(別刷論文のため)","subitem_description_type":"Other"},{"subitem_description":"研究報告書","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"馬場繁幸"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"jpn"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/18709"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"NCID","subitem_1522646572813":"BA74677691"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-03","bibliographicIssueDateType":"Issued"}}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"14560124.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2005733/files/14560124.pdf"},"version_id":"c2ad5791-c93d-48af-b539-3e304ac0c0ca"}]},"item_title":"沖縄産マングローブ樹種の開花・受粉機構の検討とポリネーターの検索","item_type_id":"15","owner":"1","path":["1642838403123","1642838407312"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2011-02-02"},"publish_date":"2011-02-02","publish_status":"0","recid":"2005733","relation_version_is_last":true,"title":["沖縄産マングローブ樹種の開花・受粉機構の検討とポリネーターの検索"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T02:51:38.610155+00:00"}