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Morphological Diversity in Cereal Plants as Adaptive Strategy, Its ecological Significance and Genetlc Control

Research Project

Project/Area Number 05454045
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 作物学
Research InstitutionThe University of Tokyo

Principal Investigator

AKITA Shigemi  The University of TOKYO Fac.of Agr. Professor, 農学部, 教授 (10251498)

Co-Investigator(Kenkyū-buntansha) ABE Jun  The University of TOKYO Fac.of Agr.Assistant Professor, 農学部, 助手 (60221727)
NEMOTO Keisuke  The University of TOKYO Fac.of Agr.Assistant Professor, 農学部, 助手 (40211461)
MORITA Shigenori  The University of TOKYO Fac.of Agr.Associate Professor, 農学部, 助教授 (00143404)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 1994: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1993: ¥3,000,000 (Direct Cost: ¥3,000,000)
KeywordsRice / Maize / Wheat / Root system / Stem Growth / Lateral Root / Vanetal Differences / Microtubule
Research Abstract

1.Root system morphology was examined in rice cultivars which are different from one another in ecological and genetic background. Diversity in root system morphoogy was caused by the combination of total root length and its distribution pattern which were determined by number and average length of nodal roots as well as average growth direction and average length of nodal roots, respectively. Development of diversity in root system morphology can be understood based on increase of number and size of successive phytomers. Position and number of nodal root primordia in phytomer were examined genetically, because they may cause the variations of root system morphology. Root system components of upland and lowland rice cutivars respond to soil water stress in different manners.
2.Dinamics of microtubules shows rib meristem differentiated first will change into intercalary meristem in elongating stem part of maize whereas rib meristem is not differentiated in non-elongating part. Elongating pattern and final shape of stem are influenced by differentiation of rib meristem as well as its active duration. Mutant in stem growth was genetically analized in addition.
3.Shwallow roots of wheat mainly consit of seminal roots with well-developed lateral root in the early growth stages. However, it is composed of nodal roots in the later growth stages. Root system with different morphology from experiences of different soil water stresses showed full recovery of water uptake after rehydration coresponding to total root length per total leaf area excluding after very severe stress.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Abe,J.他: "Growth direction of nodal roots in rice its variation and contribution to root system formation" Plant and Soil. 165. 333-337 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 森田茂紀 他: "土壌水分条件がコムギ幼植物の根の生育,とくに種子根の分枝に及ぼす影響" 日本作物学会紀事. 63. 418-422 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 森田茂紀 他: "圃場で栽培したコムギの種子根および節根の生長および分枝根形成" 日本作物学会紀事. 64. 14-18 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 森田茂紀 他: "イネの根系形態の解析-成熟期における品種間比較-" 日本作物学会紀事. 64. 58-65 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Nemoto,K.他: "Shoot and root development in rice related to the phyllochron" Crop Science. 35. 24-29 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 森田茂紀 他編: "根ハンドブック" 根研究会, 232 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Morita,S.他(分担): "Biology of Adventitious Root Formation" Davis,T.D.and Haissig,B.E., 315 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Abe, J.et al.: "Growth direction of nodal roots in rice : its variation and contribution to root system formation" Plant and Soil. 165. 333-337 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Morita, S.et al.: "Effects of soil water condition on root development of wheat seedling with special reference to branching of primary seminal root" Jpn.J.Crop Sci. 63. 418-422 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Morita, S.et al.: "Elongation and branching of seminal and nodal roots in wheat grown under field condition" Jpn.J.Crop Sci. 64. 14-18 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Morita, S.et al.: "Analysis on root system morphology in rice with refrence to varietal differences at ripening stage" Jpn.J.Crop Sci. 64. 58-65 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Nemoto, K.et al.: "Shoot and root development in rice related to the phyllochron" Crop Sci. 35. 24-29 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Morita, S.and J.Abe: Modeling root system morphology in rice.p.191-202.In Davis, T.D.and B.E.Hassig (ed) Biology of Adventitious Root Formation. Plenum Press , New York and London., (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Morita, S.and J.Abe (ed): "Handbook of Roots"(in Japanese ).Japanese Society of Root Research, Tokyo., (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Abe,J,他: "Growth direction of nodal roots in rice:its variation and contribution to root system formation" Plant and Soil. (印刷中).

    • Related Report
      1994 Annual Research Report
  • [Publications] 森田茂紀,他: "土壌水分条件がコムギ幼植物の根の生育、とくに種子根の分枝に及ぼす影響" 日本作物学会紀事. 63. 418-422 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 森田茂紀,他: "圃場で栽培したコムギの種子根および節根の生長および分枝根形成" 日本作物学会紀事. 64(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 森田茂紀,他: "イネ根系形態の解析-成熟期における品種間比較-" 日本作物学会紀事. 64(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Nemoto,K.,他: "Shoct and root development in rice related to the phyllochorn." Crop Science. 87(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 森田茂紀,他編: "根ハンドブック" 根研究会, 232 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Morita,S.,他(分担): "Biology of Adventitious Root Formation" Davis.T.D.and B.E.Haissig, 315 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 森田茂紀: "水稲1次根の空間的分布を評価するための方法" 日本作物学会紀事. 62. 359-362 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 長野敏英: "植物体内の水分状態とその制御に関する研究(4)" 生物環境調節. 31. 147-153 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Kang,S-Y.: "Root growth and distribution in some Japonica-Indica hybrid and Japonica type rice cultivars under field conditions." Japanese Journal of Crop Science. 63. 118-124 (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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