Stay-Green Trait in the Post Anthesis Period under High Temperature Conditions in Rice

2013 Fiscal Year Final Research Report

• Project/Area Number: 22380015
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Crop science/Weed science
• Research Institution: Shimane University
• Principal Investigator: KOBATA Tohru 島根大学, 生物資源科学部, 教授 (60186723)
• Co-Investigator(Kenkyū-buntansha): MATSUMOTO Shingo 島根大学, 生物資源科学部, 准教授 (00346371) ; KAWAMITSU Yoshinobu 琉球大学, 農学部, 教授 (20192552) ; NAKAGAWA Hiroshi 独立行政法人, 農業・食品産業技術総合研究機構中央農業総合研究センター, 研究員 (90207738)
• Research Collaborator: PENG Shaobing 華中農科大学, 農学部, 教授
• Project Period (FY): 2010-04-01 – 2014-03-31
• Keywords: Stay-green / イネ / 登熟期 / 高温 / 光合成

Research Abstract

By leaf-section incubation, diverse genotypic differences in green color maintenance capacity were detected in Japanese and World Rice Collection. Under high temperature conditions in the post-anthesis period, the maintenance capacity related with maintenances in photosynthesis and productivity. Leaf color by the incubation in F2 between stay-green and non-stay green or high yielding cultivar and stay-green mutant diversely distributed. Under paddy field conditions in Shimane and Okinawa, genotypic differences in green leaf maintenance and productivity were observed. From our results, stay-green trait in the post anthesis period is expected to contribute to an improvement of rice production under diverse environmental conditions including high temperature.

Research Products

• [Journal Article] Spikelet Sterility is Associated with a Lack of Assimilate in High-Spikelet-Number Rice (2013)
  • Author(s): Kobata, T., Yoshida, H., Masiko, U. and Honda, T
  • Journal Title: Agron. J. Volume: 105( 6) Pages: 1821-1831
  • Peer Reviewed
• [Journal Article] The effect of different nitrogen sources from urea and ammonium sulfate on the spikelet number in egyptian spring wheat cultivars on well watered pot soils (2012)
  • Author(s): Hafez, E. D. and Kobata, T.
  • Journal Title: Plant Production Science Volume: 15(4) Pages: 332-338
  • Peer Reviewed
• [Journal Article] Assimilate supply as a yield determination factor in spring wheat under high temperature conditions in the mediterranean zone of south-east Turkey (2012)
  • Author(s): Kobata, T., Koc, M., Barutcular, C., Matstumoto, T., Nakagawa, H., Adachi, F. and Ünlü, M.
  • Journal Title: Plant Production Science Volume: 15(3) Pages: 216-227
  • Peer Reviewed
• [Journal Article] High risk of the formation of milky white rice kernels in cultivars with higher potential grain growth rate under elevated temperatures (2011)
  • Author(s): Kobata, T., Miya, N. and Anh, N. .T
  • Journal Title: Plant Prod. Sci Volume: 14(4) Pages: 359-364
  • Peer Reviewed
• [Journal Article] Convenient estimation of unfertilized grains in rice (2010)
  • Author(s): Kobata, T., Akiyama, Y. and Kawaoka, T
  • Journal Title: Plant Prod. Sci1 Volume: 13(3) Pages: 289-296
  • Peer Reviewed
• [Presentation] 葉培養によるイネのStay-green 特性の資源評価 (2013)
  • Author(s): 小葉田 亨・ 篠永 美和・ 赤井 康平
  • Organizer: 日本作物学会第237回講演会
  • Place of Presentation: 千葉
  • Year and Date: 2013-03-30
• [Presentation] 日本晴とその緑葉維持系統における光合成およびクロロフィル蛍光特性の比較 (2013)
  • Author(s): 薮田 伸・ 福澤 康典・ 小葉田 亨・ 川満 芳信
  • Organizer: 日本作物学会第235回講演会
  • Place of Presentation: 東京
  • Year and Date: 2013-03-28
• [Presentation] Stay-green trait in rice under water and high temperature stress (2011)
  • Author(s): Kobata, T. Shinonaga, M. and Tien, H. B
  • Organizer: 7th Asian Crop Science Congress. IICC(IPB International Convention Centre
  • Place of Presentation: Bogor, Indonesia
  • Year and Date: 2011-09-29