{"created":"2023-06-19T12:43:02.489035+00:00","id":2359,"links":{},"metadata":{"_buckets":{"deposit":"1060a517-230d-4a2d-8356-ca82c6e9da45"},"_deposit":{"created_by":3,"id":"2359","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"2359"},"status":"published"},"_oai":{"id":"oai:tokyo-metro-u.repo.nii.ac.jp:00002359","sets":["465:475:478:479:491"]},"author_link":["6834","6839","6838","6841","6840","6836","6835","6837"],"item_3_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Floral sexual expression of Planchonella in Japan"}]},"item_3_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-05","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"42","bibliographicPageEnd":"21","bibliographicPageStart":"9","bibliographic_titles":[{"bibliographic_title":"小笠原研究 = Ogasawara research"}]}]},"item_3_creator_3":{"attribute_name":"著者別名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kato, Hidetoshi"}],"nameIdentifiers":[{"nameIdentifier":"6838","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tanishima, Asami"}],"nameIdentifiers":[{"nameIdentifier":"6839","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fujita, Taku"}],"nameIdentifiers":[{"nameIdentifier":"6840","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Murakami, Noriaki"}],"nameIdentifiers":[{"nameIdentifier":"6841","nameIdentifierScheme":"WEKO"}]}]},"item_3_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"日本産アカテツ属植物の性表現を明らかにするため、広域分布種アカテツ（Planchonella obovata）と小笠原固有種ムニンノキ（P. boninensis）の野外集団における性型の調査と花の解剖学的観察を行った。アカテツは小笠原諸島と沖縄本島および北大東島の集団を比較した結果、いずれの地域においても花に2型が見られた。一方の花は花冠・雄蕊・雌蕊を有する両性花、もう一方の花は花冠が退化縮小して柱頭が突出し、雄蕊を欠く雌花であった。どちらの花にも子房内部に胚珠が存在し、両性花と雌花の間で胚珠の大きさに違いは見られなかったが、柱頭の細胞に違いが見られ、両性花よりも雌花の方で乳頭状突起が発達していた。ムニンノキについても、アカテツと同様に両性花と雌花の2 型が見られたが、雌花の花冠はあまり退化していなかった。アカテツではまれに両性花と雌花が混在する個体が見られたが、両種ともほとんどの個体は両性花のみがつく両性型個体と雌花のみがつく雌性型個体に分かれた。しかしながら、野外における観察では両性型個体に結実が見られなかったことや、いずれの集団でも2型の性比はほぼ1：1であったことから、両性花は雌性の機能を失っており、機能的には雌雄異株である可能性が高いと考えられる。","subitem_description_type":"Abstract"},{"subitem_description":"The field observations and anatomical studies of the flowers were conducted to clarify the sexual expression of Planchonella obovata and P. boninensis. Morphologically distinct female and apparently bisexual flowers were observed in P. obovata, commonly in the Bonin Islands and the Ryukyu Islands (mainland of Okinawa and Kita-Daito Island). Most of the examined individuals bore either bisexual or female flowers. The corollas of the female flowers were significantly smaller than those of the bisexual flowers, although the conspicuous differences in the features of ovules were not found between the two types of flowers. Similarly in P. boninensis, two types of flowers, bisexual and female ones were observed. Morphological structures of them resembled those of P. obovata, while female corollas of the latter species were not reduced. The observed frequencies of bisexual and female individuals in the populations for both species were almost equal (1:1), fruit setting in the bisexual plants were not observed in this study. Consequently, P. obovata and P. boninensis were strongly suggested to have the sex expression of dioecy, where the bisexual flowers are functionally male.","subitem_description_type":"Abstract"}]},"item_3_description_40":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"postprint","subitem_description_type":"Other"}]},"item_3_publisher_33":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"首都大学東京小笠原研究委員会"}]},"item_3_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00032332","subitem_source_identifier_type":"NCID"}]},"item_3_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03868176","subitem_source_identifier_type":"ISSN"}]},"item_3_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"加藤, 英寿"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"谷島, 麻美"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"藤田, 卓"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"村上, 哲明"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-08-03"}],"displaytype":"detail","filename":"20001-042-002.pdf","filesize":[{"value":"2.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"20001-042-002.pdf","url":"https://tokyo-metro-u.repo.nii.ac.jp/record/2359/files/20001-042-002.pdf"},"version_id":"d8cbd4b2-3059-423e-b80f-9f7ef1fb8a0b"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"アカテツ","subitem_subject_scheme":"Other"},{"subitem_subject":"ムニンノキ","subitem_subject_scheme":"Other"},{"subitem_subject":"花形態","subitem_subject_scheme":"Other"},{"subitem_subject":"小笠原諸島","subitem_subject_scheme":"Other"},{"subitem_subject":"海洋島","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"日本産アカテツ属植物の花の性表現","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"日本産アカテツ属植物の花の性表現"}]},"item_type_id":"3","owner":"3","path":["491"],"pubdate":{"attribute_name":"公開日","attribute_value":"2016-06-21"},"publish_date":"2016-06-21","publish_status":"0","recid":"2359","relation_version_is_last":true,"title":["日本産アカテツ属植物の花の性表現"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-06-19T18:38:10.049198+00:00"}