{"created":"2023-05-15T13:37:31.708164+00:00","id":1182,"links":{},"metadata":{"_buckets":{"deposit":"85d0d2b3-c8d9-44e7-88e6-5936953e9ad1"},"_deposit":{"created_by":12,"id":"1182","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"1182"},"status":"published"},"_oai":{"id":"oai:repository.naro.go.jp:00001182","sets":["87:597:592:126:176"]},"author_link":["183"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2002-03-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"48","bibliographicPageStart":"41","bibliographicVolumeNumber":"100","bibliographic_titles":[{"bibliographic_title":"東北農業研究センター研究報告"},{"bibliographic_title":"Bulletin of TOHOKU Agricultural Research Center","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In general, crack formation of rice grains, which is a cause of the unfavorable cracked grains, occurs when rice plants are subjected to natural weathering in the field far after the maturing stage or when rice grains dry rapidly in the drying machine. In the present study, varietal differences of the crack formation and the relative traits are examined, In addition, the inheritance of crack formation is also examined.  Crack formation occurred more at the top part of panicles than the middle part of panicles and the varietal differences varied more at the top part of panicles than the middle part of panicles, Hence the top part is suitable for findling varietal differences.  The significant varietal differences of the crack formation were obviously observed. At 21 days after maturity, the cracked grains of the susceptible varieties were more than 30% while the cracked grains of the resistant varieties were very few. Among the varieties in the Tohoku region, Mutsuhomare and Toyonishiki were very susceptible to crack formation while Kokoromachi and Hatajirushi were resistant.  It is said that thick grains are likely to have crack formation. However there was no significant positive correlation between the percentage of cracked grains and grain thickness in the varieties. In addition, thick and large grain varieties which were used for sake brewery were examined. Although Hanafubuki had the thickest grains, it showed very few cracked grains, It seemed that the varieties with slow ripening speed such as the Hanafubuki were resistant to crack formation. So relationship between the ripening speed and the crack formation were examined. There was significant correlation between them. Hence it is concluded that rice grains are susceptible to crack formation when the ripening speed is higher. As well, crack formation occurs more in years when the temperature is higher and the ripening speed is higher. Inheritance of resistance to crack formation was examined. In a combination, susceptible  Toyonishiki and resistant Honen-wase, the resistant characteristic was recessive showing, that most of the individuals were susceptible in the F2 segregation. In the case of another combination, i.e. resistant indica Yan Xuang 203 and susceptible Japonica TML4, the resistant characteristic was also recessive in the F2 generation. The grains of resistant individuals were small, short or slender. In Toyonishiki/Honen-wase, there was a significant correation(r=0.51） between F2 individuals and F3 lines in crack formation. However there was large variation in the percentage of cracked grains among individuals of a same variety. Hence it is concluded that F2 selection for crack formation is possible but not effective.\n","subitem_description_type":"Abstract"},{"subitem_description":"水稲胴割れ米発生 (胴割れ) の品種間差異と関連形質および遺伝を調べた。胴割れは, 穂の先端部で多く発生し品種間差異も大きかったことから, 穂の先端を用いて検定するのが効率的と判断した。刈遅れによる胴割れの品種間差異は大きく, 成熟期から21日後には胴割れ易品種は胴割れが30%以上発生し, 胴割れ難品種は数%しか発生しなかった。東北地域の品種では, 「むつほまれ」や「トヨニシキ」で胴割れが多く, 「こころまち」や「はたじるし」で胴割れが少なかった。胴割れの品種間差異と粒厚の品種間差異の関係をみた結果, 正の相関関係が認められたが有意ではなかった。また酒米品種の「華吹雪」は粒厚が厚いにもかかわらず胴割れが著しく少なかった。この要因として「華吹雪」は登熟が遅いことが推察された。そこで, 登熟の早さと胴割れとの関係を調査した結果, 登熟の早い品種に胴割れが多い傾向が認められた。ついで遺伝にっいてみた結果, 胴割れ易の「トヨニシキ」と難の「ホウネンワセ」の組合せでは難が劣性であり, F2世代は胴割れ難の個体は著しく少なく関連する遺伝子数は多いことが推察された。またインド型で胴割れ難の「塩選203号」と胴割れ易の日本型の組合せの場合も同じく難が劣性で, 1粒重が重い, 粒長が長い, 粒幅が長い個体で胴割れが多い傾向が認められた。トヨニシキ／ホウネンワセの胴割れにっいてのF2個体とF3系統の世代問相関はr＝0.5rと有意であるが, 個体間の環境変異が大きいことから胴割れのF2個体選抜は効率的でないと判断した。\n","subitem_description_type":"Abstract"}]},"item_10002_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24514/00001149","subitem_identifier_reg_type":"JaLC"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"独立行政法人 農業技術研究機構 東北農業研究センター"}]},"item_10002_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.24514/00001149","subitem_relation_type_select":"DOI"}}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1347-3379","subitem_source_identifier_type":"ISSN"}]},"item_10002_version_type_20":{"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":"滝田, 正"},{"creatorName":"タキタ, タダシ","creatorNameLang":"ja-Kana"},{"creatorName":"TAKITA, Tadashi","creatorNameLang":"en"}],"nameIdentifiers":[{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-03-07"}],"displaytype":"detail","filename":"tarc_report_No100p41-48p.pdf","filesize":[{"value":"269.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"tarc_report_No100p41-48p.pdf","url":"https://repository.naro.go.jp/record/1182/files/tarc_report_No100p41-48p.pdf"},"version_id":"a8243aa8-6f79-45d5-af89-7f96fcd6cb19"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"水稲","subitem_subject_scheme":"Other"},{"subitem_subject":"品質","subitem_subject_scheme":"Other"},{"subitem_subject":"胴割れ","subitem_subject_scheme":"Other"},{"subitem_subject":"品種","subitem_subject_scheme":"Other"},{"subitem_subject":"遺伝","subitem_subject_scheme":"Other"},{"subitem_subject":"要因","subitem_subject_scheme":"Other"},{"subitem_subject":"rice","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"grain quality","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"crack formation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cracked grain","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"variety","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"inheritance","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"factor","subitem_subject_language":"en","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":"胴割れ米発生の品種間差異と関連形質および遺伝","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"胴割れ米発生の品種間差異と関連形質および遺伝"},{"subitem_title":"Varietal Differences，Relative Traits and Inheritances of Crack Formation in Rice","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"12","path":["176"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-03-22"},"publish_date":"2019-03-22","publish_status":"0","recid":"1182","relation_version_is_last":true,"title":["胴割れ米発生の品種間差異と関連形質および遺伝"],"weko_creator_id":"12","weko_shared_id":-1},"updated":"2023-05-15T16:35:02.658290+00:00"}