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Propositions for ideal characteristics of grain filling in super high yielding rice genotype which will be developed in the near future by analyzing the mechanism of controlling the grain filling priority of spikelets within the panicle

Research Project

Project/Area Number 19580010
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Crop science/Weed science
Research InstitutionTohoku University

Principal Investigator

NAKAMURA Teiji  Tohoku University, 大学院・農学研究科, 助手 (70155844)

Co-Investigator(Kenkyū-buntansha) GOTO Yusuke  東北大学, 大学院・農学研究科, 准教授 (80122919)
NAKAJIMA Takayuki  東北大学, 大学院・農学研究科, 助手 (80241553)
Project Period (FY) 2007 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsイネ / 穎果 / 登熟優先度 / sink capacity / 弱勢 / source / sink比 / ABA / 登熟 / 品質 / source/sink比 / アブシジン酸 / 食用作物 / 初期成長 / 炭水化物
Research Abstract

It is known that there is the genetic difference in SCP (the strength to control the priority of spikelets within the panicle for grain filling) in rice. Data from the experiments using the genotype with high sink capacity recently released showed that the early growth and filling of grains at the lower positions within the panicle (inferior grains) often decrease in varieties with strong SCP, but such a decrease dose not occur in varieties with strong SCP. Therefore, in addition to high sink capacity, weak SCP should be proposed as ideal characteristic of grain filling in super high yielding rice genotype which will be developed in the near future.

Report

(6 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report   Self-evaluation Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (12 results)

All 2010 2009 2008 Other

All Presentation (11 results) Remarks (1 results)

  • [Presentation] イネ穎果における初期成長と乾物蓄積の関係について2010

    • Author(s)
      佐川日香理・中村貞二・中嶋孝幸・国分牧衛
    • Organizer
      日本作物学会第230回講演会
    • Place of Presentation
      北海道大学
    • Year and Date
      2010-09-05
    • Related Report
      2010 Final Research Report
  • [Presentation] イネ穎果における初期成長と品質の関係について2010

    • Author(s)
      佐藤紘子・中村貞二・国分牧衛
    • Organizer
      日本作物学会第230回講演会
    • Place of Presentation
      北海道大学
    • Year and Date
      2010-09-05
    • Related Report
      2010 Final Research Report
  • [Presentation] イネ穎果における初期成長と乾物蓄積の関係について2010

    • Author(s)
      佐川日香理・中村貞二・中嶋孝幸・国分牧衛
    • Organizer
      日本作物学会第230回講演会
    • Place of Presentation
      北海道大学農学部(札幌)
    • Year and Date
      2010-09-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] イネ穎果における初期成長と品質の関係について2010

    • Author(s)
      佐藤紘子・中村貞二・国分牧衛
    • Organizer
      日本作物学会第230回講演会
    • Place of Presentation
      北海道大学農学部(札幌)
    • Year and Date
      2010-09-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] 高いsink capacityを持つイネにおける穎果の初期成長と登熟2010

    • Author(s)
      成澤嘉朋・中村貞二・国分牧衛
    • Organizer
      日本作物学会第229回講演会
    • Place of Presentation
      宇都宮
    • Year and Date
      2010-03-30
    • Related Report
      2009 Annual Research Report
  • [Presentation] 高いsink capacityを持つイネにおける穎果の初期成長と登熟2009

    • Author(s)
      成澤嘉明・中村貞二・国分牧衛
    • Organizer
      日本作物学会第229回講演会
    • Place of Presentation
      宇都宮大学
    • Year and Date
      2009-03-30
    • Related Report
      2010 Final Research Report
  • [Presentation] 高い sink capacity を持つイネにおける穎果の初期成長と登熟2009

    • Author(s)
      成澤嘉明・中村貞二・国分牧衛
    • Organizer
      日本作物学会第229回講演会
    • Place of Presentation
      宇都宮大学
    • Year and Date
      2009-03-30
    • Related Report
      2009 Self-evaluation Report
  • [Presentation] 穂上位置を異にする穎果の登熟優先度調節系がイネの登熟特性に及ぼす影響2008

    • Author(s)
      成澤嘉明・中村貞二・国分牧衛
    • Organizer
      日本作物学会第226回講演会
    • Place of Presentation
      神戸大学
    • Year and Date
      2008-09-25
    • Related Report
      2010 Final Research Report 2009 Self-evaluation Report
  • [Presentation] 穂上位置を異にする穎果の登熟優先度調節系がイネの登熟特性に及ぼす影響2008

    • Author(s)
      成澤嘉明
    • Organizer
      日本作物学会第226回講演会
    • Place of Presentation
      神戸大学農学部
    • Year and Date
      2008-09-25
    • Related Report
      2008 Annual Research Report
  • [Presentation] Exogenous cytokinin promotes the early growth of inferior grains through the increase of endogenous ABA in rice plants2008

    • Author(s)
      中村貞二・嶋孝幸・国分牧衛
    • Organizer
      5th International Crop Science Congress & Exhibition
    • Place of Presentation
      International Convention Center、Jeju、 Korea
    • Year and Date
      2008-04-17
    • Related Report
      2010 Final Research Report
  • [Presentation] Exogenous cytokinin promotes the early growth of inferior grains through the increase of endogenous ABA in rice plants2008

    • Author(s)
      Teiji Nakamura, Shusaku Uchida, Makie Kokubun
    • Organizer
      5th International Crop Science Congress & Exhibition
    • Place of Presentation
      International Convention Center, Jeju, Korea
    • Year and Date
      2008-04-17
    • Related Report
      2009 Self-evaluation Report 2008 Annual Research Report
  • [Remarks]

    • URL

      http://www.agri.tohoku.ac.jp/crop/NakamuraTeiji/

    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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