{"created":"2022-01-27T07:33:35.075384+00:00","id":2003422,"links":{},"metadata":{"_buckets":{"deposit":"86894be2-5a36-4936-9f63-c544fecd9c09"},"_deposit":{"id":"2003422","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2003422"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02003422","sets":["1642837622505:1642837905044:1642837908174","1642838403551:1642838407312"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"二面交配におけるヘテロシス, 組合せ能力および正逆交雑の差異(イネの一代雑種利用に関する基礎的研究 II)(農学科)","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Degree of heterosis, combining ability and reciprocal difference in diallel crosses (Basic studies on utilization of F_1 hybrid in rice II) (Department of Agriculture)","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"村山, 盛一","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Murayama, Seiichi","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_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"イネにおけるヘテロシスの程度と一般, 特定両組合せ能力の検定, さらに正逆交雑における差異について検討するために日本稲7品種を用いて二面交配を行なった。調査は収量・穂数・粒数・千粒重・稈長について行なった。1.収量における特定組合せ能力については41組合せ中11組合せで有意に中間親をしのぎ, うち7組合せでは20%以上の増加をみた。一般組合せ能力についても品種間に差異がみられた。また, 2,3の組合せでは正逆交雑における差異もみられた。2.穂数においては組合せ能力は低く, また正逆交雑における差異もみられなかった。3.粒数においては収量構成形質中ヘテロシス程度は最も高く, 5組合せで10%以上のヘテロシスを示し, これらの組合せはいずれも有意であった。一般組合せ能力についても品種間に差異があり, さらに2,3の組合せでは正逆交雑における差異もみられた。4.千粒重においては全組合せでF_1は中間親より重く, 15組合せでは有意であった。しかしヘテロシスの程度は概して低く, 最も高いものでも9%のヘテロシスを示したに過ぎない。一般組合せ能力については品種間に大差はなく, また2,3の組合せでは特定の正逆交雑間に有意差がみられた。5.稈長においては24組合せで有意なヘテロシスを示しているが, その程度は概して低く, 最も組合せ能力の高いものでも13%高くなっているに過ぎない。またヘテロシスの程度は短稈品種間におけるF_1では高く, 長稈品種間におけるF_1では低くなる傾向がみられた。6.Hayman(2)の二面交配分析法に従って収量・穂数・粒数・千粒重について分散分析を行なうと一般および特定両組合せ能力についてはこれら全ての形質において有意差がみられたが, 正逆交雑の差については千粒重の特定な正逆交雑間に有意差を生じたに過ぎない。","subitem_description_type":"Other"},{"subitem_description":"To study degree of heterosis, specific and general combining ability, and difference of reciprocal crosses in rice, the author carried out diallel crosses between seven Japanese varieties, and obtained 42 F_1 hybrids (one of them was lost). These F_1 hybrids and seven parental varieties were cultivated under field conditions at Kyushu university in 1967. The characters which investigated in this experiment were grain yield, panicle numbers, spikelet numbers, 1000 kelnel weight and culm length. The following will be the results of this study; 1. In grain yield, specific combining ability was high, and 11 F_1 hybrids of 41 were significantly difference. And 7 of them exceeded mid-parent by more than 20%. Some reciprocal crosses showed considerable difference. 2. In panicle numbers, combining ability was low, and no F_1 hybrid showed significant difference. 3. In spikelet numbers, degree of heterosis was remarkable, and 5 F_1 hybrids exceeded mid parent by more than 10%, and all of them were significant. For a general combining ability, there existed difference between varieties. And some F_1 hybrids showed considerable difference between reciprocal crosses. 4. 1000 kelnel weight, all F_1 hybrids exceeded mid-parent, among of them, 15 were significant. For a general combining ability, there was no difference between varieties. And some F_1 hybrids showed significant difference between reciprocal crosses. 5. In culm length, 24 F_1 hybrids showed heterosis significantly. But degree of heterosis was not so high. 6. The results of the analysis of variance of diallel table by Hayman (2) showed significant difference for a specific and general combining ability in all characters investigated in this experiment. For a reciprocal crosses, there was seen significant difference only in 1000 kelnel weight.","subitem_description_type":"Other"},{"subitem_description":"紀要論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"琉球大学農学部"}]},"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/20.500.12000/4454"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"0370-4246"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN00250548"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"琉球大学農学部学術報告"},{"subitem_1522650068558":"en","subitem_1522650091861":"The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1972-12-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"19","bibliographicPageEnd":"64","bibliographicPageStart":"57"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"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":"KJ00000162396.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2003422/files/KJ00000162396.pdf"},"version_id":"f286077b-fa42-441c-9a1c-25d3a7c24ab8"}]},"item_title":"二面交配におけるヘテロシス, 組合せ能力および正逆交雑の差異(イネの一代雑種利用に関する基礎的研究 II)(農学科)","item_type_id":"15","owner":"1","path":["1642837908174","1642838407312"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2008-02-14"},"publish_date":"2008-02-14","publish_status":"0","recid":"2003422","relation_version_is_last":true,"title":["二面交配におけるヘテロシス, 組合せ能力および正逆交雑の差異(イネの一代雑種利用に関する基礎的研究 II)(農学科)"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T01:21:53.651606+00:00"}