{"_buckets": {"deposit": "4cb95518-f944-4f93-ab08-b1d7a582117e"}, "_deposit": {"created_by": 1, "id": "1973", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "1973"}, "status": "published"}, "_oai": {"id": "oai:repository.lib.tottori-u.ac.jp:00001973", "sets": ["7", "14", "483"]}, "author_link": ["36368", "36366", "36365", "36371", "36370", "36364", "3944", "36369", "3681", "36367"], "item_3_alternative_title_31": {"attribute_name": "タイトル（ヨミ）", "attribute_value_mlt": [{"subitem_alternative_title": "ヒカリ　キョウド　ト　コウゴウセイ　ソクド　ジョウサン　ソクド　ナラビニ　スイリヨウ　コウリツ　トノ　カンケイ　カラ　ミタ　C3　C4　サクモツ　ノ　トクセイ　ノ　チガイ"}]}, "item_3_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1983-03", "bibliographicIssueDateType": "Issued"}, "bibliographicPageEnd": "66", "bibliographicPageStart": "55", "bibliographicVolumeNumber": "22", "bibliographic_titles": [{"bibliographic_title": "鳥取大学農学部砂丘研究所報告"}, {"bibliographic_title": "Bulletin of the Sand Dune Institute, Tottori University", "bibliographic_titleLang": "en"}]}]}, "item_3_checkbox_26": {"attribute_name": "部局名", "attribute_value_mlt": [{"subitem_checkbox_item": ["nou-gakubu"]}]}, "item_3_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "To make clear the response differences of photosynthesis，transpiration and water use efficiency to light intensity in C₃ and C₄ crops belonging to Gramineae，the CO₂ exchange and transpiration rates were measured with the attached leaves. Also，water use efficiency， leaf conductance and intercellular CO₂ concentration were calculated based on these measured data. The response of photosynhetic and transpiration rates to light intensity were simultaneously measured using the open system assimilation chamber method provided with a by-pass to dehydrate the water transpired by the leaves. In each crop，light intensity was changed in 9 steps from 110 klx to total darkness. During the measuring，temperature and relative humidity in the chamber were maintained at 30±O.5℃ and 64.3±1.24%，respectively. The results obtained were as follows : 1) Light saturation point，maximum photosynthetic rate and initial slope in the photosynthetic light response curve of C₄ crops were higher compared with those of C₃ crops. 2) The response of the transpiration and water use efficiency to light intensity in both crops saturated at 30 Klx and 10 klx，respectively. The transpiration of C₄ crops was three fourths that of C₃ crops. On the other hand，the water use efficiency of C₄ crops was about twice that of C₃ crops. 3) Leaf conductance and intercellular CO₂ concentration of C₃ crops were larger than those of C₄ crops. 4) There were，in the case of the present experiment，high positive correlations between transpiration and photosynthetic rates in each of the crops. 5) The relations of water use efficiency and intercellular CO₂ concentration with leaf conductance in all crops under high light intensity showed a high negative correlation for water use efficiency and a high positive correlation for intercellular CO₂ concentrations. 6) The higher water use efficiency of C₄ crops was mainly caused by restricting the loss of water vapour from leaves with the smaller Ieaf conductance than those of C₃ crops. 7) Under such small Ieaf conductance，it is considered that the C₄ crops maintain their high photosynthetic rate by means of the high carboxylation efficiency and of the large CO₂ gradient (from the atmosphere to the inside leaves).", "subitem_description_type": "Abstract"}]}, "item_3_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "鳥取大学農学部砂丘利用研究施設."}]}, "item_3_relation_16": {"attribute_name": "情報源", "attribute_value_mlt": [{"subitem_relation_name": [{"subitem_relation_name_text": "鳥取大学農学部砂丘研究所報告. 1983, 22, 55-66"}]}]}, "item_3_relation_17": {"attribute_name": "関連サイト", "attribute_value_mlt": [{"subitem_relation_name": [{"subitem_relation_name_text": "http://www.affrc.go.jp/db_search/jasi/RN/270666"}], "subitem_relation_type_id": {"subitem_relation_type_id_text": "http://www.affrc.go.jp/db_search/jasi/RN/270666", "subitem_relation_type_select": "URI"}}]}, "item_3_rights_15": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "(pdfファイル作成は農林水産省農林水産技術会議事務局筑波事務所)"}]}, "item_3_source_id_11": {"attribute_name": "書誌レコードID", "attribute_value_mlt": [{"subitem_source_identifier": "AN00174665", "subitem_source_identifier_type": "NCID"}]}, 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