Development of water-saving aerobic rice culture: evaluation of the role of root growth

• Project/Area Number: 20780010
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Crop science/Weed science
• Research Institution: The University of Tokyo
• Principal Investigator: KATO Yoichiro The University of Tokyo, 大学院・農学生命科学研究科, 助教 (50463881)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: イネ / 節水栽培 / 多収性 / 根系 / 陸稲栽培

Research Abstract

This study aimed to enhance grain yield under newly developed water-saving rice cultivation, namely 'aerobic rice culture'. While reducing the water input to the paddy field by over 50%, attainable rice yield in aerobic culture was comparable to that in conventional flooded culture(>10t/ha). However, this water-saving cultivation was more likely to induce plant internal water deficit as it considerably restricted the root system development.

Research Products

• [Journal Article] Root morphology, hydraulic conductivity and plant water relations of high-yielding rice grown under aerobic conditions. (2011)
  • Author(s): Kato Y, Okami M.
  • Journal Title: Annals of Botany (印刷中)
• [Journal Article] Physiological characterization of introgression lines derived from an indica rice cultivar, IR64, adapted to drought and water-saving irrigation. (2011)
  • Author(s): Kato Y, Henry A, Fujita D, Kobayashi N, Serraj R.
  • Journal Title: Field Crops Research (印刷中)
• [Journal Article] Root response to aerobic conditions in rice, estimated by Comair root length scanner and scanner-based image analysis. (2010)
  • Author(s): Kato Y, Okami M, Tajima, R, Fujita, D, Kobayashi, N.
  • Journal Title: Field Crops Research 118 Pages: 194-198
• [Journal Article] Panicle architecture and grain number in irrigated rice grown under different water management regimes. (2010)
  • Author(s): Kato Y, Katsura K.
  • Journal Title: Field Crops Research 117 Pages: 237-244
• [Journal Article] Radiation-use efficiency, N accumulation and biomass production of high-yielding rice in aerobic culture. (2010)
  • Author(s): Katsura K, Okami M, Mizunuma H, Kato Y.
  • Journal Title: Field Crops Research 117 Pages: 81-89
  • NAID: 120002098851
• [Journal Article] Root growth dynamics and stomatal behaviour of rice (Oryza sativa L.) grown under aerobic and flooded conditions. (2010)
  • Author(s): Kato Y, Okami M.
  • Journal Title: Field Crops Research 117 Pages: 9-17
• [Journal Article] Root response to aerobic conditions in rice, estimated by Comair root length scanner and scanner-based image analysis. (2010)
  • Author(s): Kato, Yoichiro
  • Journal Title: Field Crops Research Volume: 118 Pages: 194-198
  • Peer Reviewed
• [Journal Article] Root growth dynamics and stomatal behaviour of rice (Oryza sativa L.) grown under aerobic and flooded conditions. (2010)
  • Author(s): Kato, Yoichiro
  • Journal Title: Field Crops Research Volume: 117 Pages: 9-17
  • Peer Reviewed
• [Journal Article] Panicle architecture and grain number in irrigated rice grown under different water management regimes. (2010)
  • Author(s): Kato, Yoichiro
  • Journal Title: Field Crops Research Volume: 117 Pages: 237-244
  • Peer Reviewed
• [Journal Article] Yield potential and water use efficiency of aerobic rice (Oryza sativa L.) in Japan. (2009)
  • Author(s): Kato Y, Okami M, Katsura K.
  • Journal Title: Field Crops Research 113 Pages: 328-334
• [Journal Article] Yield potential and water use efficiency of aerobic rice (Oryza sativa L.) in Japan. (2009)
  • Author(s): Kato, Yoichiro
  • Journal Title: Field Crops Research Volume: 113 Pages: 328-334
  • Peer Reviewed
• [Presentation] 畑条件における多収性イネの根系発達および水吸収能力 (2011)
  • Author(s): 加藤洋一郎
  • Organizer: 日本作物学会紀事80(別1):30-31.
• [Presentation] Ecophysiological determinants of grain number in rice grown under water-saving management. (2010)
  • Author(s): Kato, Y. K.Katsura
  • Organizer: In : Proceedings of the 11^<th> ESA Congress "AGRO2100"pp679-680
  • Place of Presentation: Montpellier, France
• [Presentation] Aerobic rice culture for adaptation to water scarcity in irrigated rice production. (2010)
  • Author(s): Kato, Y., Katsura, K., Fujita, D., Henry, A., Kobayashi, N., R.Serraj
  • Organizer: In : Proceedings of The 3rd International Rice Congress
  • Place of Presentation: Hanoi, Vietnam
• [Presentation] 畑栽培におけるイネ(Oryza sativa L.)の多収性に関する研究3.地下部の生長動態の解析 (2010)
  • Author(s): 加藤洋一郎・桂圭佑
  • Organizer: 日本作物学会紀事79(別1):224-225
• [Presentation] Adaptation of rice to uplands in the temperate monsoon region in Japan. (2009)
  • Author(s): Kato, Y., Okami, M., Yamagishi, J., Abe, J., Nemoto, K., Kamoshita, A., Katsura, K., Hirayama, M., T.Manabe
  • Organizer: In : Proceedings of The 3rd International Conference on Integrated Approaches to Improve Plant Production under Drought-Prone Environments "InterDrought-III",pp15.
  • Place of Presentation: Shanghai China
• [Presentation] ストレス環境における作物の安定多収栽培技術-イネの畑栽培研究から見えること- (2009)
  • Author(s): 藤洋一郎・桂圭佑
  • Organizer: 日本育種学会・日本作物学会合同講演会シンポジウム講演11(別1):24-25
  • Place of Presentation: 育種学研究
• [Presentation] Comparison of vegetative growths between aerobic and lowland rice systems in the temperate regions. (2008)
  • Author(s): Kato, Y., K.Katsura
  • Organizer: In : Proceedings of the 5th International Crop Science Congress,pp 171.
  • Place of Presentation: Jeju, Korea
• [Presentation] Performance of high-yielding varieties in aerobic rice systems in the temperate regions (2008)
  • Author(s): Yoichiro Kato, Keisuke Katsura
  • Organizer: 第5回国際作物学会議
  • Place of Presentation: 済州島、韓国
• [Remarks] 第8回(2009年)日本農学進歩賞受賞「水資源の効率的活用を目指した高生産性陸稲栽培システムの確立」